Merge test changes from develop (#959)

39 files changed, 404 insertions, 236 deletions

diff --git a/release_docs/RELEASE.txt b/release_docs/RELEASE.txt
index df429d7..e291edb 100644
--- a/release_docs/RELEASE.txt
+++ b/release_docs/RELEASE.txt
@@ -263,7 +263,7 @@ Bug Fixes since HDF5-1.12.1 release
 
     Testing
     -------
-    - 
+    -
 
 
 Supported Platforms
diff --git a/test/big.c b/test/big.c
index 36fb27d..2bbae67 100644
--- a/test/big.c
+++ b/test/big.c
@@ -56,8 +56,8 @@
 #define DNAME "big.data"
 
 #define WRT_N       50
-#define WRT_SIZE    4 * 1024
-#define FAMILY_SIZE 1024 * 1024 * 1024
+#define WRT_SIZE    (4 * 1024)
+#define FAMILY_SIZE (1024 * 1024 * 1024)
 
 #define GB (HDoff_t)0x40000000L
 
diff --git a/test/cmpd_dset.c b/test/cmpd_dset.c
index e74b438..8777096 100644
--- a/test/cmpd_dset.c
+++ b/test/cmpd_dset.c
@@ -110,8 +110,8 @@ typedef struct {
     long long r, s, t;
 } stype4;
 
-#define NX          100u
-#define NY          2000u
+#define NX          100U
+#define NY          2000U
 #define PACK_NMEMBS 100
 
 /*-------------------------------------------------------------------------
@@ -1466,6 +1466,10 @@ test_hdf5_src_subset(char *filename, hid_t fapl)
     return 0;
 
 error:
+    HDfree(orig);
+    HDfree(rbuf);
+    HDfree(rew_buf);
+
     HDputs("*** DATASET TESTS FAILED ***");
     return 1;
 }
diff --git a/test/cmpd_dtransform.c b/test/cmpd_dtransform.c
index ef5ad75..76ff287 100644
--- a/test/cmpd_dtransform.c
+++ b/test/cmpd_dtransform.c
@@ -31,59 +31,75 @@ typedef struct {
 int
 main(void)
 {
-    hsize_t dima[] = {1};
-    hsize_t dims[] = {LENGTH};
-    hid_t   str_dtyp_id, att_dtyp_id, file_id, fspace_id, dset_id, att_dspc_id, att_attr_id, dxpl_id;
+    hsize_t     dima[]      = {1};
+    hsize_t     dims[]      = {LENGTH};
+    hid_t       str_dtyp_id = H5I_INVALID_HID, att_dtyp_id = H5I_INVALID_HID;
+    hid_t       file_id     = H5I_INVALID_HID;
+    hid_t       fspace_id   = H5I_INVALID_HID;
+    hid_t       dset_id     = H5I_INVALID_HID;
+    hid_t       att_dspc_id = H5I_INVALID_HID;
+    hid_t       att_attr_id = H5I_INVALID_HID;
+    hid_t       dxpl_id     = H5I_INVALID_HID;
+    const char *expr        = "2*x";
+    int *       data        = NULL;
+    int *       data_res    = NULL;
+    att_t *     atts        = NULL;
+    att_t *     atts_res    = NULL;
 
     /* Compound datatype */
-    att_t *atts = HDmalloc(sizeof(att_t));
+    if (NULL == (atts = HDmalloc(sizeof(att_t))))
+        TEST_ERROR;
     HDstrcpy(atts[0].name, "Name");
     HDstrcpy(atts[0].unit, "Unit");
 
     /* String type */
     if ((str_dtyp_id = H5Tcopy(H5T_C_S1)) < 0)
-        TEST_ERROR;
-    H5Tset_size(str_dtyp_id, 64);
+        FAIL_STACK_ERROR
+    if (H5Tset_size(str_dtyp_id, 64) < 0)
+        FAIL_STACK_ERROR
 
     /* Attribute type */
     if ((att_dtyp_id = H5Tcreate(H5T_COMPOUND, sizeof(att_t))) < 0)
-        TEST_ERROR;
-    H5Tinsert(att_dtyp_id, "NAME", HOFFSET(att_t, name), str_dtyp_id);
-    H5Tinsert(att_dtyp_id, "UNIT", HOFFSET(att_t, unit), str_dtyp_id);
+        FAIL_STACK_ERROR
+    if (H5Tinsert(att_dtyp_id, "NAME", HOFFSET(att_t, name), str_dtyp_id) < 0)
+        FAIL_STACK_ERROR
+    if (H5Tinsert(att_dtyp_id, "UNIT", HOFFSET(att_t, unit), str_dtyp_id) < 0)
+        FAIL_STACK_ERROR
 
     /* Create file. */
     if ((file_id = H5Fcreate(FILENAME, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT)) < 0)
-        TEST_ERROR;
+        FAIL_STACK_ERROR
 
     /* Create file dataspace. */
     if ((fspace_id = H5Screate_simple(1, dims, NULL)) < 0)
-        TEST_ERROR;
+        FAIL_STACK_ERROR
 
     /* Create dataset. */
     if ((dset_id = H5Dcreate2(file_id, "test_dset", H5T_NATIVE_INT, fspace_id, H5P_DEFAULT, H5P_DEFAULT,
                               H5P_DEFAULT)) < 0)
-        TEST_ERROR;
+        FAIL_STACK_ERROR
 
     /* Write the attribute (compound) to the dataset */
     if ((att_dspc_id = H5Screate_simple(1, dima, NULL)) < 0)
-        TEST_ERROR;
+        FAIL_STACK_ERROR
     if ((att_attr_id =
              H5Acreate2(dset_id, "ATTRIBUTES", att_dtyp_id, att_dspc_id, H5P_DEFAULT, H5P_DEFAULT)) < 0)
-        TEST_ERROR;
+        FAIL_STACK_ERROR
     if (H5Awrite(att_attr_id, att_dtyp_id, atts) < 0)
-        TEST_ERROR;
+        FAIL_STACK_ERROR
 
     /* Create dataset transfer property list */
-    const char *expr = "2*x";
     if ((dxpl_id = H5Pcreate(H5P_DATASET_XFER)) < 0)
-        TEST_ERROR;
+        FAIL_STACK_ERROR
     if (H5Pset_data_transform(dxpl_id, expr) < 0) {
         HDprintf("**** ERROR: H5Pset_data_transform (expression: %s) ****\n", expr);
-        TEST_ERROR;
+        FAIL_STACK_ERROR
     }
 
-    int *data     = HDmalloc(LENGTH * sizeof(int));
-    int *data_res = HDmalloc(LENGTH * sizeof(int));
+    if (NULL == (data = HDmalloc(LENGTH * sizeof(int))))
+        TEST_ERROR;
+    if (NULL == (data_res = HDmalloc(LENGTH * sizeof(int))))
+        TEST_ERROR;
     for (unsigned i = 0; i < LENGTH; i++) {
         data[i]     = 10;
         data_res[i] = 2 * data[i];
@@ -91,12 +107,13 @@ main(void)
 
     /* Write the data */
     if (H5Dwrite(dset_id, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, dxpl_id, data) < 0)
-        TEST_ERROR;
+        FAIL_STACK_ERROR
 
     /* Read attribute */
-    att_t *atts_res = HDmalloc(sizeof(att_t));
-    if (H5Aread(att_attr_id, att_dtyp_id, atts_res) < 0)
+    if (NULL == (atts_res = HDmalloc(sizeof(att_t))))
         TEST_ERROR;
+    if (H5Aread(att_attr_id, att_dtyp_id, atts_res) < 0)
+        FAIL_STACK_ERROR
 
     /* Verify attribute */
     if (HDstrcmp(atts_res[0].name, atts[0].name) != 0)
@@ -106,13 +123,12 @@ main(void)
 
     /* Read the data */
     if (H5Dread(dset_id, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, data) < 0)
-        TEST_ERROR;
+        FAIL_STACK_ERROR
 
     /* Verify data */
-    for (unsigned idx = 0; idx < LENGTH; idx++) {
+    for (unsigned idx = 0; idx < LENGTH; idx++)
         if (data[idx] != data_res[idx])
             TEST_ERROR;
-    }
 
     HDfree(atts);
     HDfree(atts_res);
@@ -120,17 +136,47 @@ main(void)
     HDfree(data_res);
 
     /* Close all identifiers. */
-    H5Pclose(dxpl_id);
-    H5Aclose(att_attr_id);
-    H5Sclose(att_dspc_id);
-    H5Dclose(dset_id);
-    H5Sclose(fspace_id);
-    H5Fclose(file_id);
-    H5Tclose(att_dtyp_id);
-    H5Tclose(str_dtyp_id);
+    if (H5Pclose(dxpl_id) < 0)
+        FAIL_STACK_ERROR
+    if (H5Aclose(att_attr_id) < 0)
+        FAIL_STACK_ERROR
+    if (H5Sclose(att_dspc_id) < 0)
+        FAIL_STACK_ERROR
+    if (H5Dclose(dset_id) < 0)
+        FAIL_STACK_ERROR
+    if (H5Sclose(fspace_id) < 0)
+        FAIL_STACK_ERROR
+    if (H5Fclose(file_id) < 0)
+        FAIL_STACK_ERROR
+    if (H5Tclose(att_dtyp_id) < 0)
+        FAIL_STACK_ERROR
+    if (H5Tclose(str_dtyp_id) < 0)
+        FAIL_STACK_ERROR
 
     return 0;
 
 error:
+    H5E_BEGIN_TRY
+    {
+        H5Pclose(dxpl_id);
+        H5Aclose(att_attr_id);
+        H5Sclose(att_dspc_id);
+        H5Dclose(dset_id);
+        H5Sclose(fspace_id);
+        H5Fclose(file_id);
+        H5Tclose(att_dtyp_id);
+        H5Tclose(str_dtyp_id);
+    }
+    H5E_END_TRY
+
+    if (atts)
+        HDfree(atts);
+    if (atts_res)
+        HDfree(atts_res);
+    if (data)
+        HDfree(data);
+    if (data_res)
+        HDfree(data_res);
+
     return 1;
 }
diff --git a/test/cross_read.c b/test/cross_read.c
index eef814f..cb71996 100644
--- a/test/cross_read.c
+++ b/test/cross_read.c
@@ -41,8 +41,10 @@ const char *FILENAME[] = {"vms_data", "le_data", "be_data", NULL};
 
 #define DATASETNAME14 "Fletcher_float_data_le"
 #define DATASETNAME15 "Fletcher_float_data_be"
+#ifdef H5_HAVE_FILTER_DEFLATE
 #define DATASETNAME16 "Deflate_float_data_le"
 #define DATASETNAME17 "Deflate_float_data_be"
+#endif
 #ifdef H5_HAVE_FILTER_SZIP
 #define DATASETNAME18 "Szip_float_data_le"
 #define DATASETNAME19 "Szip_float_data_be"
diff --git a/test/direct_chunk.c b/test/direct_chunk.c
index 61e3df9..b2b7cba 100644
--- a/test/direct_chunk.c
+++ b/test/direct_chunk.c
@@ -23,7 +23,9 @@
 #define FILE_NAME "direct_chunk.h5"
 
 /* Datasets for Direct Write tests */
+#ifdef H5_HAVE_FILTER_DEFLATE
 #define DATASETNAME1 "direct_write"
+#endif
 #define DATASETNAME2 "skip_one_filter"
 #define DATASETNAME3 "skip_two_filters"
 #define DATASETNAME4 "data_conv"
@@ -31,9 +33,11 @@
 #define DATASETNAME6 "invalid_argue"
 #define DATASETNAME7 "overwrite_chunk"
 /* Datasets for Direct Read tests */
+#ifdef H5_HAVE_FILTER_DEFLATE
 #define DATASETNAME8  "disabled_chunk_cache"
 #define DATASETNAME9  "flush_chunk_cache"
 #define DATASETNAME10 "read_w_valid_cache"
+#endif
 #define DATASETNAME11 "unallocated_chunk"
 #define DATASETNAME12 "unfiltered_data"
 
@@ -43,7 +47,9 @@
 #define CHUNK_NX 4
 #define CHUNK_NY 4
 
+#ifdef H5_HAVE_FILTER_DEFLATE
 #define DEFLATE_SIZE_ADJUST(s) (HDceil(((double)(s)) * 1.001) + 12.0)
+#endif
 
 /* Temporary filter IDs used for testing */
 #define H5Z_FILTER_BOGUS1 305
@@ -1990,23 +1996,23 @@ test_read_unallocated_chunk(hid_t file)
 
     /* Create the data space with unlimited dimensions. */
     if ((dataspace = H5Screate_simple(RANK, dims, maxdims)) < 0)
-        goto error;
+        FAIL_STACK_ERROR;
     if ((mem_space = H5Screate_simple(RANK, chunk_dims, NULL)) < 0)
-        goto error;
+        FAIL_STACK_ERROR;
 
     /* Modify dataset creation properties, i.e. enable chunking, no compression */
     if ((cparms = H5Pcreate(H5P_DATASET_CREATE)) < 0)
-        goto error;
+        FAIL_STACK_ERROR;
     if ((status = H5Pset_chunk(cparms, RANK, chunk_dims)) < 0)
-        goto error;
+        FAIL_STACK_ERROR;
 
     /* Create a new dataset within the file using cparms creation properties. */
     if ((dataset = H5Dcreate2(file, DATASETNAME11, H5T_NATIVE_INT, dataspace, H5P_DEFAULT, cparms,
                               H5P_DEFAULT)) < 0)
-        goto error;
+        FAIL_STACK_ERROR;
 
     if ((dxpl = H5Pcreate(H5P_DATASET_XFER)) < 0)
-        goto error;
+        FAIL_STACK_ERROR;
 
     /* Write a single chunk to intialize the chunk storage */
     HDmemset(direct_buf, 0, CHUNK_NX * CHUNK_NY * sizeof(int));
@@ -2014,7 +2020,7 @@ test_read_unallocated_chunk(hid_t file)
     offset[1] = 0;
 
     if (H5Dwrite_chunk(dataset, dxpl, filter_mask, offset, chunk_nbytes, direct_buf) < 0)
-        goto error;
+        FAIL_STACK_ERROR;
 
     /* Attempt to read each chunk in the dataset. Chunks are not allocated,
      * therefore we expect the result of H5Dread_chunk to fail. Chunk idx starts
@@ -2034,7 +2040,7 @@ test_read_unallocated_chunk(hid_t file)
 
             /* Check that the chunk read call does not succeed. */
             if (status != -1)
-                goto error;
+                TEST_ERROR
 
             /* Query the size of the non-existant chunk */
             direct_chunk_nbytes = ULONG_MAX;
@@ -2046,18 +2052,23 @@ test_read_unallocated_chunk(hid_t file)
 
             /* Check that the chunk storage size call does not succeed. */
             if (status != -1)
-                goto error;
+                TEST_ERROR
             if (direct_chunk_nbytes != 0)
-                goto error;
+                TEST_ERROR
         }
     }
 
     /* Close/release resources. */
-    H5Dclose(dataset);
-    H5Sclose(mem_space);
-    H5Sclose(dataspace);
-    H5Pclose(cparms);
-    H5Pclose(dxpl);
+    if (H5Dclose(dataset) < 0)
+        FAIL_STACK_ERROR;
+    if (H5Sclose(mem_space) < 0)
+        FAIL_STACK_ERROR;
+    if (H5Sclose(dataspace) < 0)
+        FAIL_STACK_ERROR;
+    if (H5Pclose(cparms) < 0)
+        FAIL_STACK_ERROR;
+    if (H5Pclose(dxpl) < 0)
+        FAIL_STACK_ERROR;
 
     PASSED();
     return 0;
@@ -2121,103 +2132,100 @@ test_single_chunk(unsigned config)
     TESTING("Single chunk I/O");
 
     /* Initialize data */
-    for (i = 0; i < DIM0; i++) {
+    for (i = 0; i < DIM0; i++)
         for (j = 0; j < DIM1; j++)
             wdata[i][j] = j / CHUNK0;
-    }
 
     /* Create a new file with the latest format  */
     if ((fapl = H5Pcreate(H5P_FILE_ACCESS)) < 0)
-        goto error;
+        FAIL_STACK_ERROR;
     if (config & CONFIG_LATEST)
         if (H5Pset_libver_bounds(fapl, H5F_LIBVER_LATEST, H5F_LIBVER_LATEST) < 0)
-            goto error;
+            FAIL_STACK_ERROR;
     if ((fid = H5Fcreate(FILE, H5F_ACC_TRUNC, H5P_DEFAULT, fapl)) < 0)
-        goto error;
+        FAIL_STACK_ERROR;
 
     /* Create dataspace */
     if ((sid = H5Screate_simple(2, dims, NULL)) < 0)
-        goto error;
+        FAIL_STACK_ERROR;
 
     /* Create the dataset creation property list and set the chunk size */
     if ((dcpl = H5Pcreate(H5P_DATASET_CREATE)) < 0)
-        goto error;
+        FAIL_STACK_ERROR;
     if (H5Pset_chunk(dcpl, 2, chunk) < 0)
-        goto error;
+        FAIL_STACK_ERROR;
 
     /* Create the dataset */
     if ((did = H5Dcreate2(fid, DATASET, H5T_NATIVE_INT, sid, H5P_DEFAULT, dcpl, H5P_DEFAULT)) < 0)
-        goto error;
+        FAIL_STACK_ERROR;
 
     if (config & CONFIG_DIRECT_WRITE) {
         /* Write the data directly to the dataset */
         if (H5Dwrite_chunk(did, H5P_DEFAULT, 0, offset, CHUNK0 * CHUNK1 * 4, (void *)wdata) < 0)
-            goto error;
+            FAIL_STACK_ERROR;
     } /* end if */
     else
         /* Write the data to the dataset */
         if (H5Dwrite(did, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, (void *)wdata) < 0)
-        goto error;
+        FAIL_STACK_ERROR;
 
     /*
      * Close and release resources.
      */
     if (H5Pclose(dcpl) < 0)
-        goto error;
+        FAIL_STACK_ERROR;
     if (config & CONFIG_REOPEN_DSET)
         if (H5Dclose(did) < 0)
-            goto error;
+            FAIL_STACK_ERROR;
     if (H5Sclose(sid) < 0)
-        goto error;
+        FAIL_STACK_ERROR;
     if (H5Pclose(fapl) < 0)
-        goto error;
+        FAIL_STACK_ERROR;
     if (config & CONFIG_REOPEN_FILE)
         if (H5Fclose(fid) < 0)
-            goto error;
+            FAIL_STACK_ERROR;
 
     /* Open the file and dataset with default properties  */
     if (config & CONFIG_REOPEN_FILE)
         if ((fid = H5Fopen(FILE, H5F_ACC_RDONLY, H5P_DEFAULT)) < 0)
-            goto error;
+            FAIL_STACK_ERROR;
     if (config & CONFIG_REOPEN_DSET)
         if ((did = H5Dopen2(fid, DATASET, H5P_DEFAULT)) < 0)
-            goto error;
+            FAIL_STACK_ERROR;
 
     /* Retrieve dataset creation property list */
     if ((dcpl = H5Dget_create_plist(did)) < 0)
-        goto error;
+        FAIL_STACK_ERROR;
 
     if (config & CONFIG_DIRECT_READ) {
         /* Read the data directly */
         if (H5Dread_chunk(did, H5P_DEFAULT, offset, &filters, rdata) < 0)
-            goto error;
+            FAIL_STACK_ERROR;
 
         /* Verify returned filter mask */
         if (filters != 0)
-            goto error;
+            TEST_ERROR
     } /* end if */
     else
         /* Read the data */
         if (H5Dread(did, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, rdata) < 0)
-        goto error;
+        FAIL_STACK_ERROR;
 
     /* Verify that the data read was correct.  */
-    for (i = 0; i < DIM0; i++) {
-        for (j = 0; j < DIM1; j++) {
+    for (i = 0; i < DIM0; i++)
+        for (j = 0; j < DIM1; j++)
             if (rdata[i][j] != wdata[i][j])
-                goto error;
-        }
-    }
+                TEST_ERROR
 
     /*
      * Close and release resources
      */
     if (H5Pclose(dcpl) < 0)
-        goto error;
+        FAIL_STACK_ERROR;
     if (H5Dclose(did) < 0)
-        goto error;
+        FAIL_STACK_ERROR;
     if (H5Fclose(fid) < 0)
-        goto error;
+        FAIL_STACK_ERROR;
 
     PASSED();
     return 0;
diff --git a/test/dsets.c b/test/dsets.c
index 3b38242..941dd11 100644
--- a/test/dsets.c
+++ b/test/dsets.c
@@ -93,25 +93,29 @@ const char *FILENAME[] = {"dataset",             /* 0 */
 #define FILE_DEFLATE_NAME "deflate.h5"
 
 /* Dataset names for testing filters */
-#define DSET_DEFAULT_NAME         "default"
-#define DSET_CHUNKED_NAME         "chunked"
-#define DSET_COMPACT_NAME         "compact"
-#define DSET_SIMPLE_IO_NAME       "simple_io"
-#define DSET_USERBLOCK_IO_NAME    "userblock_io"
-#define DSET_COMPACT_IO_NAME      "compact_io"
-#define DSET_COMPACT_MAX_NAME     "max_compact"
-#define DSET_COMPACT_MAX2_NAME    "max_compact_2"
-#define DSET_CONV_BUF_NAME        "conv_buf"
-#define DSET_TCONV_NAME           "tconv"
-#define DSET_DEFLATE_NAME         "deflate"
-#define DSET_SHUFFLE_NAME         "shuffle"
-#define DSET_FLETCHER32_NAME      "fletcher32"
-#define DSET_FLETCHER32_NAME_2    "fletcher32_2"
-#define DSET_FLETCHER32_NAME_3    "fletcher32_3"
+#define DSET_DEFAULT_NAME      "default"
+#define DSET_CHUNKED_NAME      "chunked"
+#define DSET_COMPACT_NAME      "compact"
+#define DSET_SIMPLE_IO_NAME    "simple_io"
+#define DSET_USERBLOCK_IO_NAME "userblock_io"
+#define DSET_COMPACT_IO_NAME   "compact_io"
+#define DSET_COMPACT_MAX_NAME  "max_compact"
+#define DSET_COMPACT_MAX2_NAME "max_compact_2"
+#define DSET_CONV_BUF_NAME     "conv_buf"
+#define DSET_TCONV_NAME        "tconv"
+#ifdef H5_HAVE_FILTER_DEFLATE
+#define DSET_DEFLATE_NAME "deflate"
+#endif
+#define DSET_SHUFFLE_NAME      "shuffle"
+#define DSET_FLETCHER32_NAME   "fletcher32"
+#define DSET_FLETCHER32_NAME_2 "fletcher32_2"
+#define DSET_FLETCHER32_NAME_3 "fletcher32_3"
+#ifdef H5_HAVE_FILTER_DEFLATE
 #define DSET_SHUF_DEF_FLET_NAME   "shuffle+deflate+fletcher32"
 #define DSET_SHUF_DEF_FLET_NAME_2 "shuffle+deflate+fletcher32_2"
-#define DSET_OPTIONAL_SCALAR      "dataset_with_scalar_space"
-#define DSET_OPTIONAL_VLEN        "dataset_with_vlen_type"
+#endif
+#define DSET_OPTIONAL_SCALAR "dataset_with_scalar_space"
+#define DSET_OPTIONAL_VLEN   "dataset_with_vlen_type"
 #ifdef H5_HAVE_FILTER_SZIP
 #define DSET_SZIP_NAME             "szip"
 #define DSET_SHUF_SZIP_FLET_NAME   "shuffle+szip+fletcher32"
@@ -1390,10 +1394,10 @@ test_conv_buffer(hid_t fid)
                 cf->a[j][k][l] = 10 * (j + 1) + l + k;
 
     for (j = 0; j < DIM2; j++)
-        cf->b[j] = 100.0f * (float)(j + 1) + 0.01f * (float)j;
+        cf->b[j] = 100.0F * (float)(j + 1) + 0.01F * (float)j;
 
     for (j = 0; j < DIM3; j++)
-        cf->c[j] = 100.0f * (float)(j + 1) + 0.02f * (float)j;
+        cf->c[j] = 100.0F * (float)(j + 1) + 0.02F * (float)j;
 
     /* Create data space */
     if ((space = H5Screate(H5S_SCALAR)) < 0)
@@ -1502,6 +1506,9 @@ test_conv_buffer(hid_t fid)
     return SUCCEED;
 
 error:
+    HDfree(cfrR);
+    HDfree(cf);
+
     H5E_BEGIN_TRY
     {
         H5Pclose(xfer_list);
@@ -3315,8 +3322,8 @@ test_nbit_float(hid_t file)
     /* orig_data[] are initialized to be within the range that can be represented by
      * dataset datatype (no precision loss during datatype conversion)
      */
-    float  orig_data[2][5] = {{188384.0f, 19.103516f, -1.0831790e9f, -84.242188f, 5.2045898f},
-                             {-49140.0f, 2350.25f, -3.2110596e-1f, 6.4998865e-5f, -0.0f}};
+    float  orig_data[2][5] = {{188384.0F, 19.103516F, -1.0831790e9F, -84.242188F, 5.2045898F},
+                             {-49140.0F, 2350.25F, -3.2110596e-1F, 6.4998865e-5F, -0.0F}};
     float  new_data[2][5];
     size_t precision, offset;
     size_t i, j;
@@ -7160,6 +7167,7 @@ error:
     H5E_END_TRY;
     return FAIL;
 #else
+    (void)file; /* Silence compiler */
     SKIPPED();
     return SUCCEED;
 #endif
@@ -11632,7 +11640,7 @@ test_unfiltered_edge_chunks(hid_t fapl)
         TEST_ERROR
 
     /* Add "count" filter */
-    if (H5Pset_filter(dcpl, H5Z_FILTER_COUNT, 0u, (size_t)0, NULL) < 0)
+    if (H5Pset_filter(dcpl, H5Z_FILTER_COUNT, 0U, (size_t)0, NULL) < 0)
         TEST_ERROR
 
     /* Disable filters on partial chunks */
@@ -15407,6 +15415,7 @@ main(void)
     /* Tests version bounds using its own file */
     nerrors += (test_versionbounds() < 0 ? 1 : 0);
 
+    /* Tests that use their own file */
     nerrors += (test_object_header_minimization_dcpl() < 0 ? 1 : 0);
 
     /* Run misc tests */
diff --git a/test/dt_arith.c b/test/dt_arith.c
index 7b79102..91e31d5 100644
--- a/test/dt_arith.c
+++ b/test/dt_arith.c
@@ -53,7 +53,7 @@ const char *FILENAME[] = {"dt_arith1", "dt_arith2", NULL};
  * endian.  If local variable `endian' is H5T_ORDER_BE then the result will
  * be I, otherwise the result will be Z-(I+1).
  */
-#define ENDIAN(Z, I, E) (H5T_ORDER_BE == E ? (I) : (Z) - ((I) + 1))
+#define ENDIAN(Z, I, E) (H5T_ORDER_BE == (E) ? (I) : (Z) - ((I) + 1))
 
 typedef enum dtype_t {
     INT_SCHAR,
@@ -3058,10 +3058,10 @@ test_conv_flt_1(const char *name, int run_test, hid_t src, hid_t dst)
     /* Check the software results against the hardware */
     for (j = 0; j < nelmts; j++) {
         underflow = 0;
-        hw_f      = 911.0f;
-        hw_d      = 911.0f;
+        hw_f      = 911.0F;
+        hw_d      = 911.0F;
 #if H5_SIZEOF_LONG_DOUBLE != H5_SIZEOF_DOUBLE
-        hw_ld = 911.0f;
+        hw_ld = 911.0L;
 #endif
 
         /* The hardware conversion */
diff --git a/test/dtransform.c b/test/dtransform.c
index 9445d83..8d3a8c0 100644
--- a/test/dtransform.c
+++ b/test/dtransform.c
@@ -32,30 +32,30 @@ hid_t dset_id_int_chunk   = -1;
 hid_t dset_id_float_chunk = -1;
 
 const float windchillFfloat[ROWS][COLS] = {
-    {36.0f, 31.0f, 25.0f, 19.0f, 13.0f, 7.0f, 1.0f, -5.0f, -11.0f, -16.0f, -22.0f, -28.0f, -34.0f, -40.0f,
-     -46.0f, -52.0f, -57.0f, -63.0f},
-    {34.0f, 27.0f, 21.0f, 15.0f, 9.0f, 3.0f, -4.0f, -10.0f, -16.0f, -22.0f, -28.0f, -35.0f, -41.0f, -47.0f,
-     -53.0f, -59.0f, -66.0f, -72.0f},
-    {32.0f, 25.0f, 19.0f, 13.0f, 6.0f, 0.0f, -7.0f, -13.0f, -19.0f, -26.0f, -32.0f, -39.0f, -45.0f, -51.0f,
-     -58.0f, -64.0f, -71.0f, -77.0f},
-    {30.0f, 24.0f, 17.0f, 11.0f, 4.0f, -2.0f, -9.0f, -15.0f, -22.0f, -29.0f, -35.0f, -42.0f, -48.0f, -55.0f,
-     -61.0f, -68.0f, -74.0f, -81.0f},
-    {29.0f, 23.0f, 16.0f, 9.0f, 3.0f, -4.0f, -11.0f, -17.0f, -24.0f, -31.0f, -37.0f, -44.0f, -51.0f, -58.0f,
-     -64.0f, -71.0f, -78.0f, -84.0f},
-    {28.0f, 22.0f, 15.0f, 8.0f, 1.0f, -5.0f, -12.0f, -19.0f, -26.0f, -33.0f, -39.0f, -46.0f, -53.0f, -60.0f,
-     -67.0f, -73.0f, -80.0f, -87.0f},
-    {28.0f, 21.0f, 14.0f, 7.0f, 0.0f, -7.0f, -14.0f, -21.0f, -27.0f, -34.0f, -41.0f, -48.0f, -55.0f, -62.0f,
-     -69.0f, -76.0f, -82.0f, -89.0f},
-    {27.0f, 20.0f, 13.0f, 6.0f, -1.0f, -8.0f, -15.0f, -22.0f, -29.0f, -36.0f, -43.0f, -50.0f, -57.0f, -64.0f,
-     -71.0f, -78.0f, -84.0f, -91.0f},
-    {26.0f, 19.0f, 12.0f, 5.0f, -2.0f, -9.0f, -16.0f, -23.0f, -30.0f, -37.0f, -44.0f, -51.0f, -58.0f, -65.0f,
-     -72.0f, -79.0f, -86.0f, -93.0f},
-    {26.0f, 19.0f, 12.0f, 4.0f, -3.0f, -10.0f, -17.0f, -24.0f, -31.0f, -38.0f, -45.0f, -52.0f, -60.0f, -67.0f,
-     -74.0f, -81.0f, -88.0f, -95.0f},
-    {25.0f, 18.0f, 11.0f, 4.0f, -3.0f, -11.0f, -18.0f, -25.0f, -32.0f, -39.0f, -46.0f, -54.0f, -61.0f, -68.0f,
-     -75.0f, -82.0f, -89.0f, -97.0f},
-    {25.0f, 17.0f, 10.0f, 3.0f, -4.0f, -11.0f, -19.0f, -26.0f, -33.0f, -40.0f, -48.0f, -55.0f, -62.0f, -69.0f,
-     -76.0f, -84.0f, -91.0f, -98.0f}};
+    {36.0F, 31.0F, 25.0F, 19.0F, 13.0F, 7.0F, 1.0F, -5.0F, -11.0F, -16.0F, -22.0F, -28.0F, -34.0F, -40.0F,
+     -46.0F, -52.0F, -57.0F, -63.0F},
+    {34.0F, 27.0F, 21.0F, 15.0F, 9.0F, 3.0F, -4.0F, -10.0F, -16.0F, -22.0F, -28.0F, -35.0F, -41.0F, -47.0F,
+     -53.0F, -59.0F, -66.0F, -72.0F},
+    {32.0F, 25.0F, 19.0F, 13.0F, 6.0F, 0.0F, -7.0F, -13.0F, -19.0F, -26.0F, -32.0F, -39.0F, -45.0F, -51.0F,
+     -58.0F, -64.0F, -71.0F, -77.0F},
+    {30.0F, 24.0F, 17.0F, 11.0F, 4.0F, -2.0F, -9.0F, -15.0F, -22.0F, -29.0F, -35.0F, -42.0F, -48.0F, -55.0F,
+     -61.0F, -68.0F, -74.0F, -81.0F},
+    {29.0F, 23.0F, 16.0F, 9.0F, 3.0F, -4.0F, -11.0F, -17.0F, -24.0F, -31.0F, -37.0F, -44.0F, -51.0F, -58.0F,
+     -64.0F, -71.0F, -78.0F, -84.0F},
+    {28.0F, 22.0F, 15.0F, 8.0F, 1.0F, -5.0F, -12.0F, -19.0F, -26.0F, -33.0F, -39.0F, -46.0F, -53.0F, -60.0F,
+     -67.0F, -73.0F, -80.0F, -87.0F},
+    {28.0F, 21.0F, 14.0F, 7.0F, 0.0F, -7.0F, -14.0F, -21.0F, -27.0F, -34.0F, -41.0F, -48.0F, -55.0F, -62.0F,
+     -69.0F, -76.0F, -82.0F, -89.0F},
+    {27.0F, 20.0F, 13.0F, 6.0F, -1.0F, -8.0F, -15.0F, -22.0F, -29.0F, -36.0F, -43.0F, -50.0F, -57.0F, -64.0F,
+     -71.0F, -78.0F, -84.0F, -91.0F},
+    {26.0F, 19.0F, 12.0F, 5.0F, -2.0F, -9.0F, -16.0F, -23.0F, -30.0F, -37.0F, -44.0F, -51.0F, -58.0F, -65.0F,
+     -72.0F, -79.0F, -86.0F, -93.0F},
+    {26.0F, 19.0F, 12.0F, 4.0F, -3.0F, -10.0F, -17.0F, -24.0F, -31.0F, -38.0F, -45.0F, -52.0F, -60.0F, -67.0F,
+     -74.0F, -81.0F, -88.0F, -95.0F},
+    {25.0F, 18.0F, 11.0F, 4.0F, -3.0F, -11.0F, -18.0F, -25.0F, -32.0F, -39.0F, -46.0F, -54.0F, -61.0F, -68.0F,
+     -75.0F, -82.0F, -89.0F, -97.0F},
+    {25.0F, 17.0F, 10.0F, 3.0F, -4.0F, -11.0F, -19.0F, -26.0F, -33.0F, -40.0F, -48.0F, -55.0F, -62.0F, -69.0F,
+     -76.0F, -84.0F, -91.0F, -98.0F}};
 
 const int transformData[ROWS][COLS] = {{36, 31, 25, 19, 13, 7, 1, 5, 11, 16, 22, 28, 34, 40, 46, 52, 57, 63},
                                        {34, 27, 21, 15, 9, 3, 4, 10, 16, 22, 28, 35, 41, 47, 53, 59, 66, 1},
@@ -77,9 +77,9 @@ const int transformData[ROWS][COLS] = {{36, 31, 25, 19, 13, 7, 1, 5, 11, 16, 22,
         for (i = 0; i < ROWS; i++)                                                                           \
             for (j = 0; j < COLS; j++) {                                                                     \
                 if (!((((VAR1)[i][j] >= (TYPE)((VAR2)[i][j])) &&                                             \
-                       (((VAR1)[i][j] - TOL) < (TYPE)((VAR2)[i][j]))) ||                                     \
+                       (((VAR1)[i][j] - (TOL)) < (TYPE)((VAR2)[i][j]))) ||                                   \
                       (((VAR1)[i][j] <= (TYPE)((VAR2)[i][j])) &&                                             \
-                       (((VAR1)[i][j] + TOL) > (TYPE)((VAR2)[i][j]))))) {                                    \
+                       (((VAR1)[i][j] + (TOL)) > (TYPE)((VAR2)[i][j]))))) {                                  \
                     H5_FAILED();                                                                             \
                     HDfprintf(stderr, "    ERROR: Conversion failed to match computed data\n");              \
                     goto error;                                                                              \
@@ -94,8 +94,8 @@ const int transformData[ROWS][COLS] = {{36, 31, 25, 19, 13, 7, 1, 5, 11, 16, 22,
                                                                                                              \
         for (i = 0; i < ROWS; i++)                                                                           \
             for (j = 0; j < COLS; j++) {                                                                     \
-                if (!(((VAR1)[i][j] <= ((TYPE)(VAR2)[i][j] + TOL)) &&                                        \
-                      ((VAR1)[i][j] >= ((TYPE)(VAR2)[i][j] - TOL)))) {                                       \
+                if (!(((VAR1)[i][j] <= ((TYPE)(VAR2)[i][j] + (TOL))) &&                                      \
+                      ((VAR1)[i][j] >= ((TYPE)(VAR2)[i][j] - (TOL))))) {                                     \
                     H5_FAILED();                                                                             \
                     HDfprintf(stderr, "    ERROR: Conversion failed to match computed data\n");              \
                     goto error;                                                                              \
@@ -540,19 +540,19 @@ test_poly(const hid_t dxpl_id_polynomial)
 
     for (row = 0; row < ROWS; row++)
         for (col = 0; col < COLS; col++) {
-            windchillC          = (int)((5.0f / 9.0f) * (windchillFfloat[row][col] - 32));
-            polyflres[row][col] = ((2.0f + (float)windchillC) * (((float)windchillC - 8.0f) / 2.0f));
+            windchillC          = (int)((5.0F / 9.0F) * (windchillFfloat[row][col] - 32));
+            polyflres[row][col] = ((2.0F + (float)windchillC) * (((float)windchillC - 8.0F) / 2.0F));
         }
 
     TESTING("data transform, polynomial transform (int->float)")
     if (H5Dread(dset_id_int, H5T_NATIVE_FLOAT, H5S_ALL, H5S_ALL, dxpl_id_polynomial, polyflread) < 0)
         TEST_ERROR
 
-    COMPARE(float, polyflread, polyflres, 2.0f)
+    COMPARE(float, polyflread, polyflres, 2.0F)
 
     for (row = 0; row < ROWS; row++)
         for (col = 0; col < COLS; col++) {
-            windchillC          = (int)((5.0f / 9.0f) * (windchillFfloat[row][col] - 32));
+            windchillC          = (int)((5.0F / 9.0F) * (windchillFfloat[row][col] - 32));
             polyflres[row][col] = (float)((2 + windchillC) * ((windchillC - 8) / 2));
         }
 
@@ -752,7 +752,7 @@ test_copy(const hid_t dxpl_id_c_to_f_copy, const hid_t dxpl_id_polynomial_copy)
 
     for (row = 0; row < ROWS; row++)
         for (col = 0; col < COLS; col++) {
-            windchillC          = (int)((5.0f / 9.0f) * (windchillFfloat[row][col] - 32));
+            windchillC          = (int)((5.0F / 9.0F) * (windchillFfloat[row][col] - 32));
             polyflres[row][col] = (float)((2 + windchillC) * ((windchillC - 8) / 2));
         }
 
@@ -786,7 +786,7 @@ test_trivial(const hid_t dxpl_id_simple)
         TEST_ERROR
     for (row = 0; row < ROWS; row++)
         for (col = 0; col < COLS; col++) {
-            if ((windchillFfloatread[row][col] - 4.8f) > FLOAT_TOL)
+            if ((windchillFfloatread[row][col] - 4.8F) > FLOAT_TOL)
                 FAIL_PUTS_ERROR("    ERROR: Conversion failed to match computed data\n");
         }
 
@@ -843,7 +843,7 @@ test_getset(const hid_t dxpl_id_c_to_f)
 
     for (row = 0; row < ROWS; row++)
         for (col = 0; col < COLS; col++) {
-            if ((windchillFfloatread[row][col] - 4.8f) > FLOAT_TOL)
+            if ((windchillFfloatread[row][col] - 4.8F) > FLOAT_TOL)
                 FAIL_PUTS_ERROR("    ERROR: Conversion failed to match computed data\n")
         }
 
diff --git a/test/dtypes.c b/test/dtypes.c
index 29bb38b..b9979f9 100644
--- a/test/dtypes.c
+++ b/test/dtypes.c
@@ -70,7 +70,7 @@
         FAIL_STACK_ERROR                                                                                     \
     if ((NMEMBS) != H5I_nmembers(H5I_DATATYPE)) {                                                            \
         H5_FAILED();                                                                                         \
-        HDprintf("    #dtype ids expected: %lld; found: %lld\n", (long long)NMEMBS,                          \
+        HDprintf("    #dtype ids expected: %lld; found: %lld\n", (long long)(NMEMBS),                        \
                  (long long)H5I_nmembers(H5I_DATATYPE));                                                     \
         goto error;                                                                                          \
     }
@@ -783,9 +783,12 @@ test_compound_2(void)
         FAIL_STACK_ERROR
 
     /* Sizes should be the same, but be careful just in case */
-    buf  = (unsigned char *)HDmalloc(nelmts * MAX(sizeof(struct st), sizeof(struct dt)));
-    bkg  = (unsigned char *)HDmalloc(nelmts * sizeof(struct dt));
-    orig = (unsigned char *)HDmalloc(nelmts * sizeof(struct st));
+    if (NULL == (buf = (unsigned char *)HDmalloc(nelmts * MAX(sizeof(struct st), sizeof(struct dt)))))
+        goto error;
+    if (NULL == (bkg = (unsigned char *)HDmalloc(nelmts * sizeof(struct dt))))
+        goto error;
+    if (NULL == (orig = (unsigned char *)HDmalloc(nelmts * sizeof(struct st))))
+        goto error;
     for (i = 0; i < (int)nelmts; i++) {
         s_ptr       = ((struct st *)((void *)orig)) + i;
         s_ptr->a    = i * 8 + 0;
@@ -857,6 +860,10 @@ test_compound_2(void)
     return 0;
 
 error:
+    HDfree(buf);
+    HDfree(bkg);
+    HDfree(orig);
+
     /* Restore the default error handler (set in h5_reset()) */
     h5_restore_err();
 
@@ -903,9 +910,12 @@ test_compound_3(void)
         FAIL_STACK_ERROR
 
     /* Initialize */
-    buf  = (unsigned char *)HDmalloc(nelmts * MAX(sizeof(struct st), sizeof(struct dt)));
-    bkg  = (unsigned char *)HDmalloc(nelmts * sizeof(struct dt));
-    orig = (unsigned char *)HDmalloc(nelmts * sizeof(struct st));
+    if (NULL == (buf = (unsigned char *)HDmalloc(nelmts * MAX(sizeof(struct st), sizeof(struct dt)))))
+        goto error;
+    if (NULL == (bkg = (unsigned char *)HDmalloc(nelmts * sizeof(struct dt))))
+        goto error;
+    if (NULL == (orig = (unsigned char *)HDmalloc(nelmts * sizeof(struct st))))
+        goto error;
     for (i = 0; i < (int)nelmts; i++) {
         s_ptr       = ((struct st *)((void *)orig)) + i;
         s_ptr->a    = i * 8 + 0;
@@ -973,6 +983,10 @@ test_compound_3(void)
     return 0;
 
 error:
+    HDfree(buf);
+    HDfree(bkg);
+    HDfree(orig);
+
     /* Restore the default error handler (set in h5_reset()) */
     h5_restore_err();
 
@@ -1023,9 +1037,12 @@ test_compound_4(void)
         FAIL_STACK_ERROR
 
     /* Sizes should be the same, but be careful just in case */
-    buf  = (unsigned char *)HDmalloc(nelmts * MAX(sizeof(struct st), sizeof(struct dt)));
-    bkg  = (unsigned char *)HDmalloc(nelmts * sizeof(struct dt));
-    orig = (unsigned char *)HDmalloc(nelmts * sizeof(struct st));
+    if (NULL == (buf = (unsigned char *)HDmalloc(nelmts * MAX(sizeof(struct st), sizeof(struct dt)))))
+        goto error;
+    if (NULL == (bkg = (unsigned char *)HDmalloc(nelmts * sizeof(struct dt))))
+        goto error;
+    if (NULL == (orig = (unsigned char *)HDmalloc(nelmts * sizeof(struct st))))
+        goto error;
     for (i = 0; i < (int)nelmts; i++) {
         s_ptr       = ((struct st *)((void *)orig)) + i;
         s_ptr->a    = i * 8 + 0;
@@ -1096,6 +1113,10 @@ test_compound_4(void)
     return 0;
 
 error:
+    HDfree(buf);
+    HDfree(bkg);
+    HDfree(orig);
+
     /* Restore the default error handler (set in h5_reset()) */
     h5_restore_err();
 
@@ -1146,6 +1167,12 @@ test_compound_5(void)
 
     TESTING("optimized struct converter");
 
+    if (!buf || !bkg) {
+        HDfree(buf);
+        HDfree(bkg);
+        return 1;
+    }
+
     /* Build datatypes */
     short_array = H5Tcreate(H5T_COMPOUND, 4 * sizeof(short));
     array_dt    = H5Tarray_create2(H5T_NATIVE_SHORT, 1, dims);
@@ -1238,9 +1265,12 @@ test_compound_6(void)
         FAIL_STACK_ERROR
 
     /* Sizes should be the same, but be careful just in case */
-    buf  = (unsigned char *)HDmalloc(nelmts * MAX(sizeof(struct st), sizeof(struct dt)));
-    bkg  = (unsigned char *)HDmalloc(nelmts * sizeof(struct dt));
-    orig = (unsigned char *)HDmalloc(nelmts * sizeof(struct st));
+    if (NULL == (buf = (unsigned char *)HDmalloc(nelmts * MAX(sizeof(struct st), sizeof(struct dt)))))
+        goto error;
+    if (NULL == (bkg = (unsigned char *)HDmalloc(nelmts * sizeof(struct dt))))
+        goto error;
+    if (NULL == (orig = (unsigned char *)HDmalloc(nelmts * sizeof(struct st))))
+        goto error;
     for (i = 0; i < (int)nelmts; i++) {
         s_ptr    = ((struct st *)((void *)orig)) + i;
         s_ptr->b = (int16_t)((i * 8 + 1) & 0x7fff);
@@ -2290,6 +2320,8 @@ test_compound_11(void)
         ((big_t *)buf)[u].i1 = (int)(u * 3);
         ((big_t *)buf)[u].i2 = (int)(u * 5);
         ((big_t *)buf)[u].s1 = (char *)HDmalloc((size_t)32);
+        if (!((big_t *)buf)[u].s1)
+            TEST_ERROR
         HDsprintf(((big_t *)buf)[u].s1, "%u", (unsigned)u);
     } /* end for */
 
@@ -6651,13 +6683,13 @@ static int
 test_int_float_except(void)
 {
 #if H5_SIZEOF_INT == 4 && H5_SIZEOF_FLOAT == 4
-    float  buf[CONVERT_SIZE]       = {(float)INT_MIN - 172.0f, (float)INT_MAX - 32.0f, (float)INT_MAX - 68.0f,
-                               (float)4.5f};
+    float  buf[CONVERT_SIZE]       = {(float)INT_MIN - 172.0F, (float)INT_MAX - 32.0F, (float)INT_MAX - 68.0F,
+                               (float)4.5F};
     int    buf_int[CONVERT_SIZE]   = {INT_MIN, INT_MAX, INT_MAX - 127, 4};
-    float  buf_float[CONVERT_SIZE] = {(float)INT_MIN, (float)INT_MAX + 1.0f, (float)INT_MAX - 127.0f, 4};
+    float  buf_float[CONVERT_SIZE] = {(float)INT_MIN, (float)INT_MAX + 1.0F, (float)INT_MAX - 127.0F, 4};
     int *  intp; /* Pointer to buffer, as integers */
     int    buf2[CONVERT_SIZE]       = {INT_MIN, INT_MAX, INT_MAX - 72, 0};
-    float  buf2_float[CONVERT_SIZE] = {(float)INT_MIN, (float)INT_MAX, (float)INT_MAX - 127.0f, (float)0.0f};
+    float  buf2_float[CONVERT_SIZE] = {(float)INT_MIN, (float)INT_MAX, (float)INT_MAX - 127.0F, (float)0.0F};
     int    buf2_int[CONVERT_SIZE]   = {INT_MIN, INT_MAX, INT_MAX - 127, 0};
     float *floatp;   /* Pointer to buffer #2, as floats */
     hid_t  dxpl;     /* Dataset transfer property list */
diff --git a/test/enc_dec_plist.c b/test/enc_dec_plist.c
index 9b4879e..60b229a 100644
--- a/test/enc_dec_plist.c
+++ b/test/enc_dec_plist.c
@@ -350,7 +350,7 @@ main(void)
 
             TESTING("DXPL Encoding/Decoding");
 
-            if ((H5Pset_btree_ratios(dxpl, 0.2f, 0.6f, 0.2f)) < 0)
+            if ((H5Pset_btree_ratios(dxpl, 0.2, 0.6, 0.2)) < 0)
                 FAIL_STACK_ERROR
             if ((H5Pset_hyper_vector_size(dxpl, 5)) < 0)
                 FAIL_STACK_ERROR
@@ -544,7 +544,7 @@ main(void)
                 FAIL_STACK_ERROR
             if ((H5Pset_alignment(fapl, 2, 1024)) < 0)
                 FAIL_STACK_ERROR
-            if ((H5Pset_cache(fapl, 1024, 128, 10485760, 0.3f)) < 0)
+            if ((H5Pset_cache(fapl, 1024, 128, 10485760, 0.3)) < 0)
                 FAIL_STACK_ERROR
             if ((H5Pset_elink_file_cache_size(fapl, 10485760)) < 0)
                 FAIL_STACK_ERROR
diff --git a/test/file_image.c b/test/file_image.c
index f6075d5..0373468 100644
--- a/test/file_image.c
+++ b/test/file_image.c
@@ -102,8 +102,9 @@ test_properties(void)
      * property list functions. In the file driver tests further down, this will
      * not be the case.
      */
-    size   = (size_t)count * sizeof(char);
-    buffer = (char *)HDmalloc(size);
+    size = (size_t)count * sizeof(char);
+    if (NULL == (buffer = (char *)HDmalloc(size)))
+        TEST_ERROR
     for (i = 0; i < count - 1; i++)
         buffer[i] = (char)(65 + i);
     buffer[count - 1] = '\0';
@@ -338,8 +339,8 @@ test_callbacks(void)
     H5FD_file_image_callbacks_t callbacks;
     hid_t                       fapl_1;
     hid_t                       fapl_2;
-    udata_t *                   udata;
-    char *                      file_image;
+    udata_t *                   udata      = NULL;
+    char *                      file_image = NULL;
     char *                      temp_file_image;
     int                         count = 10;
     int                         i;
@@ -350,6 +351,7 @@ test_callbacks(void)
 
     /* Allocate and initialize udata */
     udata = (udata_t *)HDmalloc(sizeof(udata_t));
+    VERIFY(udata != NULL, "udata malloc failed");
     reset_udata(udata);
 
     /* copy the address of the user data into read_callbacks */
@@ -358,6 +360,7 @@ test_callbacks(void)
     /* Allocate and initialize file image buffer */
     size       = (size_t)count * sizeof(char);
     file_image = (char *)HDmalloc(size);
+    VERIFY(file_image != NULL, "file_image malloc failed");
     for (i = 0; i < count - 1; i++)
         file_image[i] = (char)(65 + i);
     file_image[count - 1] = '\0';
@@ -529,6 +532,9 @@ test_callbacks(void)
     return 0;
 
 error:
+    HDfree(file_image);
+    HDfree(udata);
+
     return 1;
 } /* test_callbacks() */
 
diff --git a/test/fillval.c b/test/fillval.c
index 4215c89..8de6ef1 100644
--- a/test/fillval.c
+++ b/test/fillval.c
@@ -1050,7 +1050,7 @@ test_rdwr_cases(hid_t file, hid_t dcpl, const char *dname, void *_fillval, H5D_f
         for (u = 0; u < nelmts; u++) {
             buf_c[u].a = 1111.11F;
             buf_c[u].x = 2222;
-            buf_c[u].y = 3333.3333F;
+            buf_c[u].y = 3333.3333;
             buf_c[u].z = 'd';
         }
         if (H5Dwrite(dset2, ctype_id, mspace, fspace, H5P_DEFAULT, buf_c) < 0)
@@ -1304,7 +1304,7 @@ test_rdwr(hid_t fapl, const char *base_name, H5D_layout_t layout)
         if (H5Pset_fill_time(dcpl, H5D_FILL_TIME_ALLOC) < 0)
             goto error;
         HDmemset(&fill_ctype, 0, sizeof(fill_ctype));
-        fill_ctype.y = 4444.4444F;
+        fill_ctype.y = 4444.4444;
         if (H5Pset_fill_value(dcpl, ctype_id, &fill_ctype) < 0)
             goto error;
         nerrors += test_rdwr_cases(file, dcpl, "dset11", &fill_ctype, H5D_FILL_TIME_ALLOC, layout,
@@ -1370,7 +1370,7 @@ test_rdwr(hid_t fapl, const char *base_name, H5D_layout_t layout)
     if (H5Pset_fill_time(dcpl, H5D_FILL_TIME_ALLOC) < 0)
         goto error;
     HDmemset(&fill_ctype, 0, sizeof(fill_ctype));
-    fill_ctype.y = 4444.4444F;
+    fill_ctype.y = 4444.4444;
     if (H5Pset_fill_value(dcpl, ctype_id, &fill_ctype) < 0)
         goto error;
     nerrors += test_rdwr_cases(file, dcpl, "dset12", &fill_ctype, H5D_FILL_TIME_ALLOC, layout, H5T_COMPOUND,
diff --git a/test/gheap.c b/test/gheap.c
index 158c9da..fa761b4 100644
--- a/test/gheap.c
+++ b/test/gheap.c
@@ -503,7 +503,7 @@ test_ooo_indices(hid_t fapl)
                 GHEAP_REPEATED_ERR("    Unable to insert object into global heap")
 
             /* Check that the index is as expected */
-            if (obj[j].idx != ((1000 * i) + j - (1000 * ((~i & 1)))) % ((1u << 16) - 1) + 1)
+            if (obj[j].idx != ((1000 * i) + j - (1000 * ((~i & 1)))) % ((1U << 16) - 1) + 1)
                 GHEAP_REPEATED_ERR("    Unexpected global heap index");
         }
 
diff --git a/test/hyperslab.c b/test/hyperslab.c
index 1f57e3b..1c55259 100644
--- a/test/hyperslab.c
+++ b/test/hyperslab.c
@@ -585,10 +585,10 @@ test_multifill(size_t nx)
 
     for (i = 0; i < nx; i++) {
         src[i].left  = 1111111;
-        src[i].mid   = 12345.6789F;
+        src[i].mid   = 12345.6789;
         src[i].right = 2222222;
         dst[i].left  = 3333333;
-        dst[i].mid   = 98765.4321F;
+        dst[i].mid   = 98765.4321;
         dst[i].right = 4444444;
     } /* end for */
 
@@ -597,7 +597,7 @@ test_multifill(size_t nx)
      * over and over again.
      */
     fill.left  = 55555555;
-    fill.mid   = 3.1415927F;
+    fill.mid   = 3.1415927;
     fill.right = 66666666;
     src_stride = 0;
 
diff --git a/test/links.c b/test/links.c
index 4600ebf..2de1fca 100644
--- a/test/links.c
+++ b/test/links.c
@@ -631,6 +631,8 @@ cklinks(hid_t fapl, hbool_t new_format)
     if ((file = H5Fopen(filename, H5F_ACC_RDONLY, fapl)) < 0)
         FAIL_STACK_ERROR
 
+    //! [H5Otoken_cmp_snip]
+
     /* Hard link */
     if (H5Oget_info_by_name3(file, "d1", &oinfo1, H5O_INFO_BASIC, H5P_DEFAULT) < 0)
         FAIL_STACK_ERROR
@@ -641,6 +643,9 @@ cklinks(hid_t fapl, hbool_t new_format)
         HDprintf("    %d: Unexpected object type should have been a dataset\n", __LINE__);
         TEST_ERROR
     } /* end if */
+
+    //! [H5Otoken_cmp_snip]
+
     if (H5Otoken_cmp(file, &oinfo1.token, &oinfo2.token, &token_cmp) < 0)
         FAIL_STACK_ERROR
     if (token_cmp) {
@@ -15938,12 +15943,16 @@ obj_visit(hid_t fapl, hbool_t new_format)
     if ((fid = build_visit_file(fapl)) < 0)
         TEST_ERROR
 
+    //! [H5Ovisit3_snip]
+
     /* Visit all the objects reachable from the root group (with file ID) */
     udata.idx  = 0;
     udata.info = new_format ? ovisit0_new : ovisit0_old;
     if (H5Ovisit3(fid, H5_INDEX_NAME, H5_ITER_INC, visit_obj_cb, &udata, H5O_INFO_BASIC) < 0)
         FAIL_STACK_ERROR
 
+    //! [H5Ovisit3_snip]
+
     /* Visit all the objects reachable from the root group (with group ID) */
     if ((gid = H5Gopen2(fid, "/", H5P_DEFAULT)) < 0)
         FAIL_STACK_ERROR
@@ -16015,6 +16024,8 @@ obj_visit_by_name(hid_t fapl, hbool_t new_format)
     if ((fid = build_visit_file(fapl)) < 0)
         TEST_ERROR
 
+    //! [H5Ovisit_by_name3_snip]
+
     /* Visit all the objects reachable from the root group (with file ID) */
     udata.idx  = 0;
     udata.info = new_format ? ovisit0_new : ovisit0_old;
@@ -16022,6 +16033,8 @@ obj_visit_by_name(hid_t fapl, hbool_t new_format)
                           H5P_DEFAULT) < 0)
         FAIL_STACK_ERROR
 
+    //! [H5Ovisit_by_name3_snip]
+
     /* Visit all the objects reachable from the root group (with group ID) */
     if ((gid = H5Gopen2(fid, "/", H5P_DEFAULT)) < 0)
         FAIL_STACK_ERROR
@@ -16670,7 +16683,7 @@ obj_exists(hid_t fapl, hbool_t new_format)
         FAIL_STACK_ERROR
 
     /* Hard links */
-    /* Verify that H5Oexists_by_name() fails for non-existent link in root group */
+    /* Verify that H5Oexists_by_name() returns false for non-existent link in root group */
     H5E_BEGIN_TRY
     {
         status = H5Oexists_by_name(fid, "foo", H5P_DEFAULT);
@@ -16689,7 +16702,7 @@ obj_exists(hid_t fapl, hbool_t new_format)
     if (TRUE != H5Oexists_by_name(fid, "group", H5P_DEFAULT))
         TEST_ERROR
 
-    /* Verify that H5Oexists_by_name() fails for non-existent link in non-root group */
+    /* Verify that H5Oexists_by_name() returns false for non-existent object in non-root group */
     H5E_BEGIN_TRY
     {
         status = H5Oexists_by_name(fid, "group/foo", H5P_DEFAULT);
diff --git a/test/objcopy.c b/test/objcopy.c
index 43a5756..e01083d 100644
--- a/test/objcopy.c
+++ b/test/objcopy.c
@@ -4498,6 +4498,10 @@ test_copy_dataset_compressed(hid_t fcpl_src, hid_t fcpl_dst, hid_t src_fapl, hid
     TESTING("H5Ocopy(): compressed dataset");
 
 #ifndef H5_HAVE_FILTER_DEFLATE
+    (void)fcpl_src;
+    (void)fcpl_dst;
+    (void)src_fapl;
+    (void)dst_fapl; /* Silence compiler */
     SKIPPED();
     HDputs("    Deflation filter not available");
 #else  /* H5_HAVE_FILTER_DEFLATE */
@@ -4923,6 +4927,10 @@ test_copy_dataset_no_edge_filt(hid_t fcpl_src, hid_t fcpl_dst, hid_t src_fapl, h
     }
 
 #ifndef H5_HAVE_FILTER_DEFLATE
+    (void)fcpl_src;
+    (void)fcpl_dst;
+    (void)src_fapl;
+    (void)dst_fapl; /* Silence compiler */
     SKIPPED();
     HDputs("    Deflation filter not available");
 #else  /* H5_HAVE_FILTER_DEFLATE */
@@ -7277,6 +7285,10 @@ test_copy_dataset_compressed_vl(hid_t fcpl_src, hid_t fcpl_dst, hid_t src_fapl,
     TESTING("H5Ocopy(): compressed dataset with VLEN datatype");
 
 #ifndef H5_HAVE_FILTER_DEFLATE
+    (void)fcpl_src;
+    (void)fcpl_dst;
+    (void)src_fapl;
+    (void)dst_fapl; /* Silence compiler */
     SKIPPED();
     HDputs("    Deflation filter not available");
 #else  /* H5_HAVE_FILTER_DEFLATE */
diff --git a/test/pool.c b/test/pool.c
index 9ce1846..c508025 100644
--- a/test/pool.c
+++ b/test/pool.c
@@ -34,7 +34,7 @@
 #define MPOOL_LARGE_BLOCK       (MPOOL_PAGE_SIZE * 3)
 #define MPOOL_NUM_SMALL_BLOCKS  64
 #define MPOOL_SMALL_BLOCK       1
-#define MPOOL_NUM_RANDOM        10 * 1024
+#define MPOOL_NUM_RANDOM        (10 * 1024)
 #define MPOOL_RANDOM_MAX_SIZE   (MPOOL_PAGE_SIZE * 2)
 
 /*-------------------------------------------------------------------------
diff --git a/test/set_extent.c b/test/set_extent.c
index 5a07362..3078c2d 100644
--- a/test/set_extent.c
+++ b/test/set_extent.c
@@ -39,7 +39,7 @@ const char *FILENAME[] = {"set_extent1", "set_extent2", "set_extent3", "set_exte
 #define CONFIG_EARLY_ALLOC 0x04u
 #define CONFIG_UNFILT_EDGE 0x08u
 #define CONFIG_ALL         (CONFIG_COMPRESS + CONFIG_FILL + CONFIG_EARLY_ALLOC + CONFIG_UNFILT_EDGE)
-#define FILL_VALUE         -1
+#define FILL_VALUE         (-1)
 #define DO_RANKS_PRINT_CONFIG(TEST)                                                                          \
     {                                                                                                        \
         HDprintf("  Config:\n");                                                                             \
@@ -134,11 +134,11 @@ main(void)
         TEST_ERROR
 
     /* Set chunk cache so only part of the chunks can be cached on fapl */
-    if (H5Pset_cache(fapl, 0, (size_t)8, 256 * sizeof(int), 0.75F) < 0)
+    if (H5Pset_cache(fapl, 0, (size_t)8, 256 * sizeof(int), 0.75) < 0)
         TEST_ERROR
 
     /* Disable chunk caching on fapl2 */
-    if (H5Pset_cache(fapl2, 0, (size_t)0, (size_t)0, 0.0F) < 0)
+    if (H5Pset_cache(fapl2, 0, (size_t)0, (size_t)0, 0.0) < 0)
         TEST_ERROR
 
     /* Set the "use the latest version of the format" bounds for creating objects in the file */
diff --git a/test/tattr.c b/test/tattr.c
index b602222..756e139 100644
--- a/test/tattr.c
+++ b/test/tattr.c
@@ -95,8 +95,7 @@ int attr_data2[ATTR2_DIM1][ATTR2_DIM2] = {{7614, -416}, {197814, -3}}; /* Test d
 #define ATTR3_DIM2 2
 #define ATTR3_DIM3 2
 double attr_data3[ATTR3_DIM1][ATTR3_DIM2][ATTR3_DIM3] = {
-    {{2.3F, -26.1F}, {0.123F, -10.0F}},
-    {{973.23F, -0.91827F}, {2.0F, 23.0F}}}; /* Test data for 3rd attribute */
+    {{2.3, -26.1}, {0.123, -10.0}}, {{973.23, -0.91827}, {2.0, 23.0}}}; /* Test data for 3rd attribute */
 
 #define ATTR4_NAME       "Attr4"
 #define ATTR4_RANK       2
@@ -113,8 +112,8 @@ struct attr4_struct {
     double d;
     char   c;
 } attr_data4[ATTR4_DIM1][ATTR4_DIM2] = {
-    {{3, -26.1F, 'd'}, {-100000, 0.123F, '3'}},
-    {{-23, 981724.2F, 'Q'}, {0, 2.0F, '\n'}}}; /* Test data for 4th attribute */
+    {{3, -26.1, 'd'}, {-100000, 0.123, '3'}},
+    {{-23, 981724.2, 'Q'}, {0, 2.0, '\n'}}}; /* Test data for 4th attribute */
 
 #define ATTR5_NAME "Attr5"
 #define ATTR5_RANK 0
diff --git a/test/tconfig.c b/test/tconfig.c
index e3c6a2c..101de9a 100644
--- a/test/tconfig.c
+++ b/test/tconfig.c
@@ -37,8 +37,9 @@
 /* verify if the sizeof(type) matches size defined in macro. */
 /* Needs this extra step so that we can print the macro name. */
 #define vrfy_macrosize(type, macro, macroname)                                                               \
-    if (sizeof(type) != macro)                                                                               \
-        TestErrPrintf("Error: sizeof(%s) is %zu but %s is %d\n", #type, sizeof(type), macroname, (int)macro);
+    if (sizeof(type) != (macro))                                                                             \
+        TestErrPrintf("Error: sizeof(%s) is %zu but %s is %d\n", #type, sizeof(type), macroname,             \
+                      (int)(macro));
 
 /* local routine prototypes */
 void test_config_ctypes(void);
diff --git a/test/testhdf5.h b/test/testhdf5.h
index 5fb01a8..ba5fa71 100644
--- a/test/testhdf5.h
+++ b/test/testhdf5.h
@@ -136,7 +136,7 @@
                        "%s \n",                                                                              \
                        (where), (int)__LINE__, __FILE__, x);                                                 \
         }                                                                                                    \
-        if (HDstrcmp(x, val)) {                                                                              \
+        if (HDstrcmp(x, val) != 0) {                                                                         \
             TestErrPrintf("*** UNEXPECTED VALUE from %s should be %s, but is %s at line %4d "                \
                           "in %s\n",                                                                         \
                           where, val, x, (int)__LINE__, __FILE__);                                           \
diff --git a/test/tfile.c b/test/tfile.c
index 796a99b..8c3f9b0 100644
--- a/test/tfile.c
+++ b/test/tfile.c
@@ -125,7 +125,7 @@
 #define TEST_THRESHOLD10 10                         /* Free space section threshold */
 #define FSP_SIZE_DEF     4096                       /* File space page size default */
 #define FSP_SIZE512      512                        /* File space page size */
-#define FSP_SIZE1G       1024 * 1024 * 1024         /* File space page size */
+#define FSP_SIZE1G       (1024 * 1024 * 1024)       /* File space page size */
 
 /* Declaration for test_libver_macros2() */
 #define FILE6 "tfile6.h5" /* Test file */
@@ -5307,7 +5307,12 @@ test_libver_bounds_real(H5F_libver_t libver_create, unsigned oh_vers_create, H5F
     group = H5Gcreate2(file, "/G1", H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
     CHECK(group, FAIL, "H5Gcreate");
 
+    //! [H5Oget_native_info_snip]
+
     ret = H5Oget_native_info(group, &ninfo, H5O_NATIVE_INFO_HDR);
+
+    //! [H5Oget_native_info_snip]
+
     CHECK(ret, FAIL, "H5Oget_native)info");
     VERIFY(ninfo.hdr.version, oh_vers_mod, "H5Oget_native_info");
 
@@ -5328,10 +5333,15 @@ test_libver_bounds_real(H5F_libver_t libver_create, unsigned oh_vers_create, H5F
     ret = H5Gclose(group);
     CHECK(ret, FAIL, "H5Gclose");
 
+    //! [H5Oget_native_info_by_name_snip]
+
     /*
      * Make sure the root group still has the correct object header version
      */
     ret = H5Oget_native_info_by_name(file, "/", &ninfo, H5O_NATIVE_INFO_HDR, H5P_DEFAULT);
+
+    //! [H5Oget_native_info_by_name_snip]
+
     CHECK(ret, FAIL, "H5Oget_native_info_by_name");
     VERIFY(ninfo.hdr.version, oh_vers_create, "H5Oget_native_info_by_name");
 
diff --git a/test/tid.c b/test/tid.c
index 2f5188e..c7e40a0 100644
--- a/test/tid.c
+++ b/test/tid.c
@@ -855,7 +855,7 @@ test_remove_clear_type(void)
     return 0;
 
 error:
-    /* Cleanup.  For simplicity, just destroy the types and ignore errors. */
+    /* Cleanup. For simplicity, just destroy the types and ignore errors. */
     H5E_BEGIN_TRY
     {
         H5Idestroy_type(obj_type);
diff --git a/test/timer.c b/test/timer.c
index bb474ca..11b7427 100644
--- a/test/timer.c
+++ b/test/timer.c
@@ -43,55 +43,55 @@ test_time_formatting(void)
     TESTING("Time string formats");
 
     /*      < 0,            N/A             */
-    s = H5_timer_get_time_string(-1.0F);
+    s = H5_timer_get_time_string(-1.0);
     if (NULL == s || HDstrcmp(s, "N/A") != 0)
         TEST_ERROR;
     HDfree(s);
 
     /*      0               0               */
-    s = H5_timer_get_time_string(0.0F);
+    s = H5_timer_get_time_string(0.0);
     if (NULL == s || HDstrcmp(s, "0.0 s") != 0)
         TEST_ERROR;
     HDfree(s);
 
     /*      < 1 us          nanoseconds     */
-    s = H5_timer_get_time_string(123.0E-9F);
+    s = H5_timer_get_time_string(123.0E-9);
     if (NULL == s || HDstrcmp(s, "123 ns") != 0)
         TEST_ERROR;
     HDfree(s);
 
     /*      < 1 ms          microseconds    */
-    s = H5_timer_get_time_string(23.456E-6F);
+    s = H5_timer_get_time_string(23.456E-6);
     if (NULL == s || HDstrcmp(s, "23.5 us") != 0)
         TEST_ERROR;
     HDfree(s);
 
     /*      < 1 s           milliseconds    */
-    s = H5_timer_get_time_string(4.56789E-3F);
+    s = H5_timer_get_time_string(4.56789E-3);
     if (NULL == s || HDstrcmp(s, "4.6 ms") != 0)
         TEST_ERROR;
     HDfree(s);
 
     /*      < 1 min         seconds         */
-    s = H5_timer_get_time_string(3.14F);
+    s = H5_timer_get_time_string(3.14);
     if (NULL == s || HDstrcmp(s, "3.14 s") != 0)
         TEST_ERROR;
     HDfree(s);
 
     /*      < 1 hr          mins, secs      */
-    s = H5_timer_get_time_string(2521.0F);
+    s = H5_timer_get_time_string(2521.0);
     if (NULL == s || HDstrcmp(s, "42 m 1 s") != 0)
         TEST_ERROR;
     HDfree(s);
 
     /*      < 1 d           hrs, mins, secs */
-    s = H5_timer_get_time_string(9756.0F);
+    s = H5_timer_get_time_string(9756.0);
     if (NULL == s || HDstrcmp(s, "2 h 42 m 36 s") != 0)
         TEST_ERROR;
     HDfree(s);
 
     /*      > 1 d            days, hrs, mins, secs */
-    s = H5_timer_get_time_string(280802.0F);
+    s = H5_timer_get_time_string(280802.0);
     if (NULL == s || HDstrcmp(s, "3 d 6 h 0 m 2 s") != 0)
         TEST_ERROR;
     HDfree(s);
diff --git a/test/titerate.c b/test/titerate.c
index 3ec01ae..b6cdd9e3 100644
--- a/test/titerate.c
+++ b/test/titerate.c
@@ -218,9 +218,14 @@ test_iter_group(hid_t fapl, hbool_t new_format)
                                          dataset_name, (size_t)NAMELEN, H5P_DEFAULT);
         CHECK(ret, FAIL, "H5Lget_name_by_idx");
 
+        //! [H5Oget_info_by_idx3_snip]
+
         ret = H5Oget_info_by_idx3(root_group, ".", H5_INDEX_NAME, H5_ITER_INC, (hsize_t)i, &oinfo,
                                   H5O_INFO_BASIC, H5P_DEFAULT);
         CHECK(ret, FAIL, "H5Oget_info_by_idx");
+
+        //! [H5Oget_info_by_idx3_snip]
+
     } /* end for */
 
     H5E_BEGIN_TRY
diff --git a/test/tmeta.c b/test/tmeta.c
index 2609703..e70db16 100644
--- a/test/tmeta.c
+++ b/test/tmeta.c
@@ -22,9 +22,9 @@
 #include "testhdf5.h"
 #include "H5Fprivate.h"
 
-#define TEST_INT16_VALUE  -7641
+#define TEST_INT16_VALUE  (-7641)
 #define TEST_UINT16_VALUE 45002
-#define TEST_INT32_VALUE  -981236
+#define TEST_INT32_VALUE  (-981236)
 #define TEST_UINT32_VALUE 3476589
 
 uint8_t compar_buffer[] = {
diff --git a/test/tmisc.c b/test/tmisc.c
index 8c7a6c5..3199ae1 100644
--- a/test/tmisc.c
+++ b/test/tmisc.c
@@ -5276,7 +5276,7 @@ test_misc28(void)
      * bytes). */
     fapl = H5Pcreate(H5P_FILE_ACCESS);
     CHECK(fapl, FAIL, "H5Pcreate");
-    ret = H5Pset_cache(fapl, MISC28_NSLOTS, MISC28_NSLOTS, MISC28_SIZE, 0.75F);
+    ret = H5Pset_cache(fapl, MISC28_NSLOTS, MISC28_NSLOTS, MISC28_SIZE, 0.75);
     CHECK(ret, FAIL, "H5Pset_cache");
 
     /* Create the dcpl and set the chunk size */
diff --git a/test/trefer_deprec.c b/test/trefer_deprec.c
index 24371ef..755df68 100644
--- a/test/trefer_deprec.c
+++ b/test/trefer_deprec.c
@@ -87,8 +87,11 @@ test_reference_params(void)
 
     /* Allocate write & read buffers */
     wbuf = (hobj_ref_t *)HDmalloc(MAX(sizeof(unsigned), sizeof(hobj_ref_t)) * SPACE1_DIM1);
+    CHECK_PTR(wbuf, "HDmalloc");
     rbuf = (hobj_ref_t *)HDmalloc(MAX(sizeof(unsigned), sizeof(hobj_ref_t)) * SPACE1_DIM1);
+    CHECK_PTR(rbuf, "HDmalloc");
     tbuf = (hobj_ref_t *)HDmalloc(MAX(sizeof(unsigned), sizeof(hobj_ref_t)) * SPACE1_DIM1);
+    CHECK_PTR(tbuf, "HDmalloc");
 
     /* Create file */
     fid1 = H5Fcreate(FILE1, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
@@ -269,8 +272,11 @@ test_reference_obj(void)
 
     /* Allocate write & read buffers */
     wbuf = (hobj_ref_t *)HDmalloc(MAX(sizeof(unsigned), sizeof(hobj_ref_t)) * SPACE1_DIM1);
+    CHECK_PTR(wbuf, "HDmalloc");
     rbuf = (hobj_ref_t *)HDmalloc(MAX(sizeof(unsigned), sizeof(hobj_ref_t)) * SPACE1_DIM1);
+    CHECK_PTR(rbuf, "HDmalloc");
     tbuf = (hobj_ref_t *)HDmalloc(MAX(sizeof(unsigned), sizeof(hobj_ref_t)) * SPACE1_DIM1);
+    CHECK_PTR(tbuf, "HDmalloc");
 
     /* Create file */
     fid1 = H5Fcreate(FILE1, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
diff --git a/test/trefstr.c b/test/trefstr.c
index 0dcf621..ea30f24 100644
--- a/test/trefstr.c
+++ b/test/trefstr.c
@@ -186,7 +186,7 @@ test_refstr_cmp(void)
     H5RS_str_t *rs1; /* Ref-counted string created */
     H5RS_str_t *rs2; /* Ref-counted string created */
     int         cmp; /* Comparison value */
-    ssize_t     len; /* Length of string */
+    size_t      len; /* Length of string */
     herr_t      ret; /* Generic return value */
 
     /* Output message about test being performed */
diff --git a/test/tsohm.c b/test/tsohm.c
index fcbb06a..b4ece0b 100644
--- a/test/tsohm.c
+++ b/test/tsohm.c
@@ -622,7 +622,7 @@ size1_helper(hid_t file, const char *filename, hid_t fapl_id, hbool_t test_file_
             HDprintf("Can't read data\n");                                                                   \
             goto error;                                                                                      \
         }                                                                                                    \
-        if ((rdata.i1 != wdata.i1) || (rdata.i2 != wdata.i2) || HDstrcmp(rdata.str, wdata.str)) {            \
+        if ((rdata.i1 != wdata.i1) || (rdata.i2 != wdata.i2) || HDstrcmp(rdata.str, wdata.str) != 0) {       \
             H5_FAILED();                                                                                     \
             AT();                                                                                            \
             HDprintf("incorrect read data\n");                                                               \
diff --git a/test/tunicode.c b/test/tunicode.c
index 52341bb..1b696ac 100644
--- a/test/tunicode.c
+++ b/test/tunicode.c
@@ -33,7 +33,7 @@
 
 #define RANK            1
 #define COMP_INT_VAL    7
-#define COMP_FLOAT_VAL  -42.0F
+#define COMP_FLOAT_VAL  (-42.0F)
 #define COMP_DOUBLE_VAL 42.0F
 
 /* Test function prototypes */
diff --git a/test/tvltypes.c b/test/tvltypes.c
index 50b2d7a..03a8ad3 100644
--- a/test/tvltypes.c
+++ b/test/tvltypes.c
@@ -2526,10 +2526,10 @@ test_vltypes_fill_value(void)
     hsize_t             small_dims[] = {SPACE4_DIM_SMALL};
     hsize_t             large_dims[] = {SPACE4_DIM_LARGE};
     size_t              dset_elmts   = 0; /* Number of elements in a particular dataset */
-    const dtype1_struct fill1        = {1, 2,    "foobar", "",   NULL,     "\0",   "dead",
-                                 3, 4.0F, 100.0F,   1.0F, "liquid", "meter"};
-    const dtype1_struct wdata = {3, 4, "", NULL, "\0", "foo", "two", 6, 8.0F, 200.0F, 2.0F, "solid", "yard"};
-    dtype1_struct *     rbuf  = NULL;                   /* Buffer for reading data */
+    const dtype1_struct fill1        = {1, 2,   "foobar", "",  NULL,     "\0",   "dead",
+                                 3, 4.0, 100.0,    1.0, "liquid", "meter"};
+    const dtype1_struct wdata    = {3, 4, "", NULL, "\0", "foo", "two", 6, 8.0, 200.0, 2.0, "solid", "yard"};
+    dtype1_struct *     rbuf     = NULL;                /* Buffer for reading data */
     size_t              mem_used = 0;                   /* Memory used during allocation */
     H5D_layout_t        layout;                         /* Dataset storage layout */
     char                dset_name1[64], dset_name2[64]; /* Dataset names */
diff --git a/test/use_common.c b/test/use_common.c
index 0ea2c83..8f78f3b 100644
--- a/test/use_common.c
+++ b/test/use_common.c
@@ -322,10 +322,12 @@ write_uc_file(hbool_t tosend, hid_t file_id, options_t *opts)
     rank  = H5Sget_simple_extent_ndims(f_sid);
     if (rank != UC_RANK) {
         HDfprintf(stderr, "rank(%d) of dataset does not match\n", rank);
+        HDfree(buffer);
         return -1;
     }
     if (H5Sget_simple_extent_dims(f_sid, dims, NULL) < 0) {
         HDfprintf(stderr, "H5Sget_simple_extent_dims got error\n");
+        HDfree(buffer);
         return -1;
     }
     HDprintf("dataset rank %d, dimensions %llu x %llu x %llu\n", rank, (unsigned long long)(dims[0]),
@@ -334,12 +336,14 @@ write_uc_file(hbool_t tosend, hid_t file_id, options_t *opts)
     if (dims[0] != 0 || dims[1] != memdims[1] || dims[2] != memdims[2]) {
         HDfprintf(stderr, "dataset is not empty. Got dims=(%llu,%llu,%llu)\n", (unsigned long long)dims[0],
                   (unsigned long long)dims[1], (unsigned long long)dims[2]);
+        HDfree(buffer);
         return -1;
     }
 
     /* setup mem-space for buffer */
     if ((m_sid = H5Screate_simple(rank, memdims, NULL)) < 0) {
         HDfprintf(stderr, "H5Screate_simple for memory failed\n");
+        HDfree(buffer);
         return -1;
     }
 
@@ -360,6 +364,7 @@ write_uc_file(hbool_t tosend, hid_t file_id, options_t *opts)
         if (opts->use_swmr) {
             if (H5Odisable_mdc_flushes(dsid) < 0) {
                 HDfprintf(stderr, "H5Odisable_mdc_flushes failed\n");
+                HDfree(buffer);
                 return -1;
             }
         }
@@ -368,12 +373,14 @@ write_uc_file(hbool_t tosend, hid_t file_id, options_t *opts)
         dims[0] = i + 1;
         if (H5Dset_extent(dsid, dims) < 0) {
             HDfprintf(stderr, "H5Dset_extent failed\n");
+            HDfree(buffer);
             return -1;
         }
 
         /* Get the dataset's dataspace */
         if ((f_sid = H5Dget_space(dsid)) < 0) {
             HDfprintf(stderr, "H5Dset_extent failed\n");
+            HDfree(buffer);
             return -1;
         }
 
@@ -381,12 +388,14 @@ write_uc_file(hbool_t tosend, hid_t file_id, options_t *opts)
         /* Choose the next plane to write */
         if (H5Sselect_hyperslab(f_sid, H5S_SELECT_SET, start, NULL, count, NULL) < 0) {
             HDfprintf(stderr, "Failed H5Sselect_hyperslab\n");
+            HDfree(buffer);
             return -1;
         }
 
         /* Write plane to the dataset */
         if (H5Dwrite(dsid, UC_DATATYPE, m_sid, f_sid, H5P_DEFAULT, buffer) < 0) {
             HDfprintf(stderr, "Failed H5Dwrite\n");
+            HDfree(buffer);
             return -1;
         }
 
@@ -394,6 +403,7 @@ write_uc_file(hbool_t tosend, hid_t file_id, options_t *opts)
         if (opts->use_swmr) {
             if (H5Oenable_mdc_flushes(dsid) < 0) {
                 HDfprintf(stderr, "H5Oenable_mdc_flushes failed\n");
+                HDfree(buffer);
                 return -1;
             }
         }
@@ -401,6 +411,7 @@ write_uc_file(hbool_t tosend, hid_t file_id, options_t *opts)
         /* flush file to make the just written plane available. */
         if (H5Dflush(dsid) < 0) {
             HDfprintf(stderr, "Failed to H5Fflush file\n");
+            HDfree(buffer);
             return -1;
         }
     } /* end for each plane to write */
@@ -488,10 +499,12 @@ read_uc_file(hbool_t towait, options_t *opts)
     rank  = H5Sget_simple_extent_ndims(f_sid);
     if (rank != UC_RANK) {
         HDfprintf(stderr, "rank(%d) of dataset does not match\n", rank);
+        HDfree(buffer);
         return -1;
     }
     if (H5Sget_simple_extent_dims(f_sid, dims, NULL) < 0) {
         HDfprintf(stderr, "H5Sget_simple_extent_dims got error\n");
+        HDfree(buffer);
         return -1;
     }
     HDprintf("dataset rank %d, dimensions %llu x %llu x %llu\n", rank, (unsigned long long)(dims[0]),
@@ -502,12 +515,14 @@ read_uc_file(hbool_t towait, options_t *opts)
                   (unsigned long long)dims[0], (unsigned long long)dims[1], (unsigned long long)dims[2]);
         HDfprintf(stderr, "But memdims=(%llu,%llu,%llu)\n", (unsigned long long)memdims[0],
                   (unsigned long long)memdims[1], (unsigned long long)memdims[2]);
+        HDfree(buffer);
         return -1;
     }
 
     /* Setup mem-space for buffer */
     if ((m_sid = H5Screate_simple(rank, memdims, NULL)) < 0) {
         HDfprintf(stderr, "H5Screate_simple for memory failed\n");
+        HDfree(buffer);
         return -1;
     }
 
@@ -533,6 +548,7 @@ read_uc_file(hbool_t towait, options_t *opts)
                 HDprintf(".");
                 if (loops_waiting_for_plane >= 30) {
                     HDfprintf(stderr, "waited too long for new plane, quit.\n");
+                    HDfree(buffer);
                     return -1;
                 }
             }
@@ -550,6 +566,7 @@ read_uc_file(hbool_t towait, options_t *opts)
             /* Get the dataset's dataspace */
             if ((f_sid = H5Dget_space(dsid)) < 0) {
                 HDfprintf(stderr, "H5Dget_space failed\n");
+                HDfree(buffer);
                 return -1;
             }
 
@@ -557,12 +574,14 @@ read_uc_file(hbool_t towait, options_t *opts)
             /* Choose the next plane to read */
             if (H5Sselect_hyperslab(f_sid, H5S_SELECT_SET, start, NULL, count, NULL) < 0) {
                 HDfprintf(stderr, "H5Sselect_hyperslab failed\n");
+                HDfree(buffer);
                 return -1;
             }
 
             /* Read the plane from the dataset */
             if (H5Dread(dsid, UC_DATATYPE, m_sid, f_sid, H5P_DEFAULT, buffer) < 0) {
                 HDfprintf(stderr, "H5Dread failed\n");
+                HDfree(buffer);
                 return -1;
             }
 
@@ -594,12 +613,14 @@ read_uc_file(hbool_t towait, options_t *opts)
         f_sid = H5Dget_space(dsid); /* Get filespace handle first. */
         if (H5Sget_simple_extent_dims(f_sid, dims, NULL) < 0) {
             HDfprintf(stderr, "H5Sget_simple_extent_dims got error\n");
+            HDfree(buffer);
             return -1;
         }
     } /* end while (expecting more planes to read) */
 
     if (H5Fclose(fid) < 0) {
         HDfprintf(stderr, "H5Fclose failed\n");
+        HDfree(buffer);
         return -1;
     }
 
diff --git a/test/vds.c b/test/vds.c
index 88ac4eb..ac9bb5d 100644
--- a/test/vds.c
+++ b/test/vds.c
@@ -78,12 +78,12 @@ char vds_test_str_g[128]   = "";
 #endif /* VDS_TEST_VERBOSE */
 
 /* I/O test config flags */
-#define TEST_IO_CLOSE_SRC      0x01u
-#define TEST_IO_DIFFERENT_FILE 0x02u
-#define TEST_IO_REOPEN_VIRT    0x04u
-#define TEST_IO_FCLOSE_SEMI    0x08u
-#define TEST_IO_FCLOSE_STRONG  0x10u
-#define TEST_IO_NTESTS         0x20u
+#define TEST_IO_CLOSE_SRC      0x01U
+#define TEST_IO_DIFFERENT_FILE 0x02U
+#define TEST_IO_REOPEN_VIRT    0x04U
+#define TEST_IO_FCLOSE_SEMI    0x08U
+#define TEST_IO_FCLOSE_STRONG  0x10U
+#define TEST_IO_NTESTS         0x20U
 
 #define LIST_DOUBLE_SIZE (H5D_VIRTUAL_DEF_LIST_SIZE + 1)
 
diff --git a/test/vfd.c b/test/vfd.c
index 237086a..e90a589 100644
--- a/test/vfd.c
+++ b/test/vfd.c
@@ -340,7 +340,7 @@ test_core(void)
     if ((fid = H5Fcreate(filename, H5F_ACC_TRUNC, H5P_DEFAULT, fapl_id)) < 0)
         TEST_ERROR;
 
-    /* Retrieve the access property list... */
+    /* Retrieve the access property list */
     if ((fapl_id_out = H5Fget_access_plist(fid)) < 0)
         TEST_ERROR;
 
diff --git a/test/vol.c b/test/vol.c
index 6b17765..a2fcffb 100644
--- a/test/vol.c
+++ b/test/vol.c
@@ -958,10 +958,14 @@ test_basic_object_operation(void)
     if (H5Oget_info3(fid, &object_info, H5O_INFO_ALL) < 0)
         TEST_ERROR;
 
+    //! [H5Oget_info_by_name3_snip]
+
     /* H5Oget_info_by_name */
     if (H5Oget_info_by_name3(fid, NATIVE_VOL_TEST_GROUP_NAME, &object_info, H5O_INFO_ALL, H5P_DEFAULT) < 0)
         TEST_ERROR;
 
+    //! [H5Oget_info_by_name3_snip]
+
     /* H5Oexists_by_name */
     if (H5Oexists_by_name(fid, NATIVE_VOL_TEST_GROUP_NAME, H5P_DEFAULT) != TRUE)
         TEST_ERROR;
diff --git a/testpar/t_filters_parallel.c b/testpar/t_filters_parallel.c
index 5153bce..50cd306 100644
--- a/testpar/t_filters_parallel.c
+++ b/testpar/t_filters_parallel.c
@@ -1762,8 +1762,8 @@ test_write_3d_filtered_dataset_overlap(void)
                               WRITE_SHARED_FILTERED_CHUNKS_3D_NCOLS)) /
                (hsize_t)(WRITE_SHARED_FILTERED_CHUNKS_3D_DEPTH * WRITE_SHARED_FILTERED_CHUNKS_3D_NCOLS))
 
-            /* Add the amount that gets added when a rank moves down to its next section vertically in the
-               dataset */
+            /* Add the amount that gets added when a rank moves down to its next
+               section vertically in the dataset */
             + ((hsize_t)(WRITE_SHARED_FILTERED_CHUNKS_3D_DEPTH * WRITE_SHARED_FILTERED_CHUNKS_3D_NCOLS) *
                (i / (hsize_t)(mpi_size * WRITE_SHARED_FILTERED_CHUNKS_3D_DEPTH *
                               WRITE_SHARED_FILTERED_CHUNKS_3D_NCOLS))));
@@ -4497,8 +4497,8 @@ test_read_3d_filtered_dataset_overlap(void)
                               READ_SHARED_FILTERED_CHUNKS_3D_NCOLS)) /
                (hsize_t)(READ_SHARED_FILTERED_CHUNKS_3D_DEPTH * READ_SHARED_FILTERED_CHUNKS_3D_NCOLS))
 
-            /* Add the amount that gets added when a rank moves down to its next section vertically in the
-               dataset */
+            /* Add the amount that gets added when a rank moves down to its next
+               section vertically in the dataset */
             + ((hsize_t)(READ_SHARED_FILTERED_CHUNKS_3D_DEPTH * READ_SHARED_FILTERED_CHUNKS_3D_NCOLS) *
                (i / (hsize_t)(mpi_size * READ_SHARED_FILTERED_CHUNKS_3D_DEPTH *
                               READ_SHARED_FILTERED_CHUNKS_3D_NCOLS))));
diff --git a/testpar/t_shapesame.c b/testpar/t_shapesame.c
index 027c8c9..2dd867a 100644
--- a/testpar/t_shapesame.c
+++ b/testpar/t_shapesame.c
@@ -441,11 +441,8 @@ hs_dr_pio_test__setup(const int test_num, const int edge_size, const int checker
     VRFY((ret >= 0), "H5Dwrite() small_dataset initial write succeeded");
 
     /* sync with the other processes before checking data */
-    if (!use_collective_io) {
-
-        mrc = MPI_Barrier(MPI_COMM_WORLD);
-        VRFY((mrc == MPI_SUCCESS), "Sync after small dataset writes");
-    }
+    mrc = MPI_Barrier(MPI_COMM_WORLD);
+    VRFY((mrc == MPI_SUCCESS), "Sync after small dataset writes");
 
     /* read the small data set back to verify that it contains the
      * expected data.  Note that each process reads in the entire
@@ -515,11 +512,8 @@ hs_dr_pio_test__setup(const int test_num, const int edge_size, const int checker
     VRFY((ret >= 0), "H5Dwrite() large_dataset initial write succeeded");
 
     /* sync with the other processes before checking data */
-    if (!use_collective_io) {
-
-        mrc = MPI_Barrier(MPI_COMM_WORLD);
-        VRFY((mrc == MPI_SUCCESS), "Sync after large dataset writes");
-    }
+    mrc = MPI_Barrier(MPI_COMM_WORLD);
+    VRFY((mrc == MPI_SUCCESS), "Sync after large dataset writes");
 
     /* read the large data set back to verify that it contains the
      * expected data.  Note that each process reads in the entire
@@ -547,12 +541,8 @@ hs_dr_pio_test__setup(const int test_num, const int edge_size, const int checker
     VRFY((mis_match == FALSE), "large ds init data good.");
 
     /* sync with the other processes before changing data */
-
-    if (!use_collective_io) {
-
-        mrc = MPI_Barrier(MPI_COMM_WORLD);
-        VRFY((mrc == MPI_SUCCESS), "Sync initial values check");
-    }
+    mrc = MPI_Barrier(MPI_COMM_WORLD);
+    VRFY((mrc == MPI_SUCCESS), "Sync initial values check");
 
     return;