Fix several warnings (#747)

3 files changed, 85 insertions, 37 deletions

diff --git a/hl/src/H5LT.c b/hl/src/H5LT.c
index fb507e7..1ef0f9d 100644
--- a/hl/src/H5LT.c
+++ b/hl/src/H5LT.c
@@ -2146,19 +2146,28 @@ realloc_and_append(hbool_t _no_user_buf, size_t *len, char *buf, const char *str
     size_t size_str_to_add, size_str;
 
     if (_no_user_buf) {
+        char *tmp_realloc;
+
+        if (!buf)
+            goto out;
+
         /* If the buffer isn't big enough, reallocate it.  Otherwise, go to do strcat. */
         if (str_to_add && ((ssize_t)(*len - (HDstrlen(buf) + HDstrlen(str_to_add) + 1)) < LIMIT)) {
             *len += ((HDstrlen(buf) + HDstrlen(str_to_add) + 1) / INCREMENT + 1) * INCREMENT;
-            buf = (char *)HDrealloc(buf, *len);
         }
         else if (!str_to_add && ((ssize_t)(*len - HDstrlen(buf) - 1) < LIMIT)) {
             *len += INCREMENT;
-            buf = (char *)HDrealloc(buf, *len);
         }
-    }
 
-    if (!buf)
-        goto out;
+        tmp_realloc = (char *)HDrealloc(buf, *len);
+        if (tmp_realloc == NULL) {
+            HDfree(buf);
+            buf = NULL;
+            goto out;
+        }
+        else
+            buf = tmp_realloc;
+    }
 
     if (str_to_add) {
         /* find the size of the buffer to add */
@@ -2374,9 +2383,9 @@ out:
 herr_t
 H5LTdtype_to_text(hid_t dtype, char *str, H5LT_lang_t lang_type, size_t *len)
 {
-    size_t str_len = INCREMENT;
-    char * text_str;
-    herr_t ret = SUCCEED;
+    size_t str_len  = INCREMENT;
+    char * text_str = NULL;
+    herr_t ret      = SUCCEED;
 
     if (lang_type <= H5LT_LANG_ERR || lang_type >= H5LT_NO_LANG)
         goto out;
@@ -2400,6 +2409,8 @@ H5LTdtype_to_text(hid_t dtype, char *str, H5LT_lang_t lang_type, size_t *len)
     return ret;
 
 out:
+    HDfree(text_str);
+
     return FAIL;
 }
 
@@ -2779,10 +2790,14 @@ next:
             if (H5LTdtype_to_text(super, NULL, lang, &super_len) < 0)
                 goto out;
             stmp = (char *)HDcalloc(super_len, sizeof(char));
-            if (H5LTdtype_to_text(super, stmp, lang, &super_len) < 0)
+            if (H5LTdtype_to_text(super, stmp, lang, &super_len) < 0) {
+                HDfree(stmp);
                 goto out;
-            if (!(dt_str = realloc_and_append(no_user_buf, slen, dt_str, stmp)))
+            }
+            if (!(dt_str = realloc_and_append(no_user_buf, slen, dt_str, stmp))) {
+                HDfree(stmp);
                 goto out;
+            }
 
             if (stmp)
                 HDfree(stmp);
@@ -2822,10 +2837,14 @@ next:
             if (H5LTdtype_to_text(super, NULL, lang, &super_len) < 0)
                 goto out;
             stmp = (char *)HDcalloc(super_len, sizeof(char));
-            if (H5LTdtype_to_text(super, stmp, lang, &super_len) < 0)
+            if (H5LTdtype_to_text(super, stmp, lang, &super_len) < 0) {
+                HDfree(stmp);
                 goto out;
-            if (!(dt_str = realloc_and_append(no_user_buf, slen, dt_str, stmp)))
+            }
+            if (!(dt_str = realloc_and_append(no_user_buf, slen, dt_str, stmp))) {
+                HDfree(stmp);
                 goto out;
+            }
 
             if (stmp)
                 HDfree(stmp);
@@ -2879,10 +2898,14 @@ next:
             if (H5LTdtype_to_text(super, NULL, lang, &super_len) < 0)
                 goto out;
             stmp = (char *)HDcalloc(super_len, sizeof(char));
-            if (H5LTdtype_to_text(super, stmp, lang, &super_len) < 0)
+            if (H5LTdtype_to_text(super, stmp, lang, &super_len) < 0) {
+                HDfree(stmp);
                 goto out;
-            if (!(dt_str = realloc_and_append(no_user_buf, slen, dt_str, stmp)))
+            }
+            if (!(dt_str = realloc_and_append(no_user_buf, slen, dt_str, stmp))) {
+                HDfree(stmp);
                 goto out;
+            }
             if (stmp)
                 HDfree(stmp);
             stmp = NULL;
@@ -2933,10 +2956,14 @@ next:
                 if (H5LTdtype_to_text(mtype, NULL, lang, &mlen) < 0)
                     goto out;
                 mtmp = (char *)HDcalloc(mlen, sizeof(char));
-                if (H5LTdtype_to_text(mtype, mtmp, lang, &mlen) < 0)
+                if (H5LTdtype_to_text(mtype, mtmp, lang, &mlen) < 0) {
+                    HDfree(mtmp);
                     goto out;
-                if (!(dt_str = realloc_and_append(no_user_buf, slen, dt_str, mtmp)))
+                }
+                if (!(dt_str = realloc_and_append(no_user_buf, slen, dt_str, mtmp))) {
+                    HDfree(mtmp);
                     goto out;
+                }
                 if (mtmp)
                     HDfree(mtmp);
                 mtmp = NULL;
diff --git a/hl/test/test_ds.c b/hl/test/test_ds.c
index ead5c65..786aba8 100644
--- a/hl/test/test_ds.c
+++ b/hl/test/test_ds.c
@@ -406,10 +406,10 @@ create_int_dataset(hid_t fid, const char *dsidx, int fulldims)
 herr_t
 create_long_dataset(hid_t fid, const char *dsname, const char *dsidx, int fulldims)
 {
-    int     rank    = 4;
-    int     rankds  = 1;
-    hsize_t dims[4] = {DIM1_SIZE, DIM2_SIZE, DIM3_SIZE, DIM4_SIZE};
-    long *  buf;
+    int     rank                = 4;
+    int     rankds              = 1;
+    hsize_t dims[4]             = {DIM1_SIZE, DIM2_SIZE, DIM3_SIZE, DIM4_SIZE};
+    long *  buf                 = NULL;
     hsize_t s1_dim[1]           = {DIM1_SIZE};
     hsize_t s2_dim[1]           = {DIM2_SIZE};
     hsize_t s3_dim[1]           = {DIM3_SIZE};
@@ -431,49 +431,54 @@ create_long_dataset(hid_t fid, const char *dsname, const char *dsidx, int fulldi
 
     /* Allocate buffer */
     if (NULL == (buf = (long *)HDmalloc(sizeof(long) * DIM1_SIZE * DIM2_SIZE * DIM3_SIZE * DIM4_SIZE)))
-        return FAIL;
+        goto error;
 
     /* make a dataset */
     if (H5LTmake_dataset_long(fid, dsname, rank, dims, buf) >= 0) {
         if (fulldims == 0) {
             /* make a DS dataset for the first dimension */
             if (create_DS1_long_datasets(fid, dsidx, rankds, s1_dim, s1_wbuf, NULL) < 0)
-                return FAIL;
+                goto error;
 
             /* make a DS dataset for the second dimension */
             if (create_DS2_long_datasets(fid, dsidx, rankds, s2_dim, s2_wbuf, NULL, NULL) < 0)
-                return FAIL;
+                goto error;
 
             /* make a DS dataset for the third dimension */
             if (create_DS3_long_datasets(fid, dsidx, rankds, s3_dim, s3_wbuf, NULL, NULL, NULL) < 0)
-                return FAIL;
+                goto error;
 
             /* make a DS dataset for the fourth dimension */
             if (create_DS4_long_datasets(fid, dsidx, rankds, s4_dim, s4_wbuf, NULL, NULL, NULL, NULL) < 0)
-                return FAIL;
+                goto error;
         }
         else {
             if (create_DS1_long_datasets(fid, dsidx, rankds, s1_dim, s1_wbuf, s11_wbuf) < 0)
-                return FAIL;
+                goto error;
 
             if (create_DS2_long_datasets(fid, dsidx, rankds, s2_dim, s2_wbuf, s21_wbuf, s22_wbuf) < 0)
-                return FAIL;
+                goto error;
 
             if (create_DS3_long_datasets(fid, dsidx, rankds, s3_dim, s3_wbuf, s31_wbuf, s32_wbuf, s33_wbuf) <
                 0)
-                return FAIL;
+                goto error;
 
             if (create_DS4_long_datasets(fid, dsidx, rankds, s4_dim, s4_wbuf, s41_wbuf, s42_wbuf, s43_wbuf,
                                          s44_wbuf) < 0)
-                return FAIL;
+                goto error;
         }
     }
     else
-        return FAIL;
+        goto error;
 
     HDfree(buf);
 
     return SUCCEED;
+
+error:
+    HDfree(buf);
+
+    return FAIL;
 }
 
 herr_t
diff --git a/hl/test/test_file_image.c b/hl/test/test_file_image.c
index b397a81..bde8adc 100644
--- a/hl/test/test_file_image.c
+++ b/hl/test/test_file_image.c
@@ -53,8 +53,8 @@
 static int
 test_file_image(size_t open_images, size_t nflags, const unsigned *flags)
 {
-    hid_t * file_id, *dset_id, file_space, plist; /* HDF5 ids */
-    hsize_t dims1[RANK]    = {2, 3};              /* original dimension of datasets */
+    hid_t * file_id = NULL, *dset_id = NULL, file_space, plist; /* HDF5 ids */
+    hsize_t dims1[RANK]    = {2, 3};                            /* original dimension of datasets */
     hsize_t max_dims[RANK] = {H5S_UNLIMITED, H5S_UNLIMITED};
     int     data1[6]       = {1, 2, 3, 4, 5, 6};    /* original contents of dataset */
     int     data2[6]       = {7, 8, 9, 10, 11, 12}; /* "wrong" contents of dataset */
@@ -63,10 +63,10 @@ test_file_image(size_t open_images, size_t nflags, const unsigned *flags)
     hsize_t dims4[RANK] = {3, 5};                   /* extended dimensions of datasets */
     int     data4[15]   = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
     /* extended contents of dataset */
-    ssize_t *       buf_size;    /* pointer to array of buffer sizes */
-    void **         buf_ptr;     /* pointer to array of pointers to image buffers */
-    char **         filename;    /* pointer to array of pointers to filenames */
-    unsigned *      input_flags; /* pointer to array of flag combinations */
+    ssize_t *       buf_size    = NULL; /* pointer to array of buffer sizes */
+    void **         buf_ptr     = NULL; /* pointer to array of pointers to image buffers */
+    char **         filename    = NULL; /* pointer to array of pointers to filenames */
+    unsigned *      input_flags = NULL; /* pointer to array of flag combinations */
     size_t          i, j, k, nrow, n_values;
     herr_t          status1;
     void *          handle_ptr       = NULL; /* pointers to driver buffer */
@@ -85,7 +85,7 @@ test_file_image(size_t open_images, size_t nflags, const unsigned *flags)
         FAIL_PUTS_ERROR("malloc() failed");
 
     /* allocate array to store the name of each of the open images */
-    if (NULL == (filename = (char **)HDmalloc(sizeof(char *) * open_images)))
+    if (NULL == (filename = (char **)HDcalloc(1, sizeof(char *) * open_images)))
         FAIL_PUTS_ERROR("malloc() failed");
 
     /* allocate array to store the size of each of the open images */
@@ -110,6 +110,8 @@ test_file_image(size_t open_images, size_t nflags, const unsigned *flags)
 
         /* allocate name buffer for image i */
         filename[i] = (char *)HDmalloc(sizeof(char) * 32);
+        if (!filename[i])
+            FAIL_PUTS_ERROR("HDmalloc() failed");
 
         /* create file name */
         HDsprintf(filename[i], "image_file%d.h5", (int)i);
@@ -232,6 +234,9 @@ test_file_image(size_t open_images, size_t nflags, const unsigned *flags)
             if (input_flags[i] & H5LT_FILE_IMAGE_OPEN_RW && !(input_flags[i] & H5LT_FILE_IMAGE_DONT_COPY)) {
 
                 void *tmp_ptr = HDmalloc((size_t)buf_size[i]);
+                if (!tmp_ptr)
+                    FAIL_PUTS_ERROR("buffer allocation failed");
+
                 /* Copy vfd buffer to a temporary buffer */
                 HDmemcpy(tmp_ptr, (void *)*core_buf_ptr_ptr, (size_t)buf_size[i]);
                 /* Clear status_flags in the superblock for the vfd buffer: file locking is using status_flags
@@ -525,6 +530,17 @@ test_file_image(size_t open_images, size_t nflags, const unsigned *flags)
     return 0;
 
 error:
+    if (filename) {
+        for (i = 0; i < open_images; i++)
+            HDfree(filename[i]);
+        HDfree(filename);
+    }
+    HDfree(file_id);
+    HDfree(dset_id);
+    HDfree(buf_ptr);
+    HDfree(buf_size);
+    HDfree(input_flags);
+
     H5_FAILED();
     return -1;
 }