Merge pull request #811 in HDFFV/hdf5 from hdf5_1_8_20 to 1.8/masterhdf5-1_8_20

* commit '60f76980aab92f0e0730170b99a2363acd3c97fa': (108 commits)
  Update version numbers and remove empty sections in RELEASE.txt.
  Restore line 1154: C2Cppfunction_map.mht to HTML_EXTRA_FILES.
  Update version for 1.8.20 release.
  Fixed documentation warnings
  HDFFV-10329 Correct LINK INTERFACE and VS20013 compile
  Switch default build mode from development to production. Increment version string to pre2.
  Add RELEASE.txt note for HDFFV-10274. (cherry picked from commit f7a7d0a00613cba997212fa8032091629a678797)
  Initialize hid_t variables in test_Attr_bug9. (cherry picked from commit 97bc393449f3fe02c5992872ab2842e12f611ef0)
  Fix HDFFV-10274.  When deleting all (or almost all) of the messages in an object header chunk, where the total amount deleted was greater than 64K, an error would occur due to an off by one error in the code that handled that case.  Fixed this and added a test case. (cherry picked from commit 1b2c2ca9a6a7d7e1fcd5c3302e203f2e2dabf0af)
  Fix linking of libs
  Changed file path to relative.
  iAdd NAG to supported compilers in RELEASE.txt.
  Add description to RELEASE.txt for HDFFV-10323
  Correct issue number
  Set version to 1.8.20-pre1
  Update supported and tested platforms in RELEASE.txt.
  HDFFV-10321 Merge from 1.8
  Incremented lib file .so numbers: revision for all except c++ for code change; current incremented, revision and age set to 0 for c++ due to symbols added and removed.
  updated issues related to Fortran
  Incremented lib file .so numbers: revision for all except c++ for dcode change; current incremented, revision and age set to 0 for c++ due to symbols added and removed.
  ...

1 files changed, 147 insertions, 0 deletions

diff --git a/test/gen_bad_offset.c b/test/gen_bad_offset.c
new file mode 100644
index 0000000..82e94cd
--- /dev/null
+++ b/test/gen_bad_offset.c
@@ -0,0 +1,147 @@
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+ * Copyright by The HDF Group.                                               *
+ * Copyright by the Board of Trustees of the University of Illinois.         *
+ * All rights reserved.                                                      *
+ *                                                                           *
+ * This file is part of HDF5.  The full HDF5 copyright notice, including     *
+ * terms governing use, modification, and redistribution, is contained in    *
+ * the COPYING file, which can be found at the root of the source code       *
+ * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * If you do not have access to either file, you may request a copy from     *
+ * help@hdfgroup.org.                                                        *
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+/*
+ * Purpose:	Generate an HDF5 file for testing H5FFV-10216
+ */
+#include "h5test.h"
+
+#define TESTFILE    "bad_offset.h5"
+#define GRP1        "group1"
+#define GRP2        "group2"
+#define DSET        "dsetA"
+#define SOFT1       "soft_one"
+#define SOFT2       "soft_two"
+
+
+
+/*-------------------------------------------------------------------------
+ * Function:	main
+ *
+ *              Generate an HDF5 file with groups, datasets and symbolic links. 
+ *              After the file is generated, write bad offset values to 
+ *              the heap at 3 locations in the file:
+ *              (A) Open the file:
+ *                  fd = HDopen(TESTFILE, O_RDWR, 0663);
+ *              (B) Position the file at:
+ *                  (1) HDlseek(fd, (HDoff_t)880, SEEK_SET);
+ *                      "/group1/group2": replace heap offset "8" by bad offset
+ *                  (2) HDlseek(fd, (HDoff_t)1512, SEEK_SET);
+ *                      "/dsetA": replace name offset into private heap "72" by bad offset 
+ *                  (3) HDlseek(fd, (HDoff_t)1616, SEEK_SET);
+ *                      /soft_one: replace link value offset in the scratch pad "32" by bad offset
+ *              (C) Write the bad offset value to the file for (1), (2) and (3):
+ *                  write(fd, &val, sizeof(val));
+ *
+ *              Note: if the groups/datasets/symbolic links are changed in the file,
+ *              the above locations need to be adjusted accordingly.
+ *
+ * Return:      EXIT_SUCCESS/EXIT_FAILURE
+ *
+ *-------------------------------------------------------------------------
+ */
+int
+main(void)
+{
+    hid_t       fid = -1, gid1 = -1, gid2 = -1; /* File and group IDs */
+    hid_t       did = -1, sid = -1;             /* Dataset and dataspace IDs */
+    int         fd = -1;                        /* File descriptor */
+    int64_t     val = 999;                      /* Bad offset value */
+
+    /* Create the test file */
+    if((fid = H5Fcreate(TESTFILE, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT)) < 0)
+        FAIL_STACK_ERROR
+
+    /* Create two groups */
+    if((gid1 = H5Gcreate2(fid, GRP1, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT)) < 0)
+        FAIL_STACK_ERROR
+    if((gid2 = H5Gcreate2(gid1, GRP2, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT)) < 0)
+        FAIL_STACK_ERROR
+
+    /* Close the groups */
+    if(H5Gclose(gid1) < 0)
+        FAIL_STACK_ERROR
+    if(H5Gclose(gid2) < 0)
+        FAIL_STACK_ERROR
+
+    /* Create soft links to the groups */
+    if(H5Lcreate_soft("/group1", fid, SOFT1, H5P_DEFAULT, H5P_DEFAULT) < 0)
+        FAIL_STACK_ERROR
+    if(H5Lcreate_soft("/group1/group2", fid, SOFT2, H5P_DEFAULT, H5P_DEFAULT) < 0)
+        FAIL_STACK_ERROR
+
+    /* Create a dataset */
+    if((sid = H5Screate(H5S_SCALAR)) < 0)
+        FAIL_STACK_ERROR
+    if((did = H5Dcreate2(fid, DSET, H5T_NATIVE_INT, sid, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT)) <  0)
+        FAIL_STACK_ERROR
+
+    /* Close the dataset */
+    if(H5Dclose(did) < 0)
+        FAIL_STACK_ERROR
+
+    /* Close the dataspace */
+    if(H5Sclose(sid) < 0)
+        FAIL_STACK_ERROR
+
+    /* Close the file */
+    if(H5Fclose(fid) < 0)
+        FAIL_STACK_ERROR
+
+    /* 
+     * Write bad offset values at 3 locations in the file
+     */
+
+    /* Open the file */
+    if((fd = HDopen(TESTFILE, O_RDWR, 0663)) < 0)
+        FAIL_STACK_ERROR
+
+    /* Position the file for /group1/group2: replace heap offset "8" by bad offset */
+    if(HDlseek(fd, (HDoff_t)880, SEEK_SET) < 0)
+        FAIL_STACK_ERROR
+    /* Write the bad offset value to the file */
+    if(HDwrite(fd, &val, sizeof(val)) < 0)
+        FAIL_STACK_ERROR
+
+    /* Position the file for /dsetA: replace name offset into private heap "72" by bad offset */
+    if(HDlseek(fd, (HDoff_t)1512, SEEK_SET) < 0)
+        FAIL_STACK_ERROR
+    /* Write the bad offset value to the file */
+    if(HDwrite(fd, &val, sizeof(val)) < 0)
+        FAIL_STACK_ERROR
+
+    /* Position the file for /soft_one: replace link value offset in the scratch pad "32" by bad offset */
+    if(HDlseek(fd, (HDoff_t)1616, SEEK_SET) < 0)
+        FAIL_STACK_ERROR
+    /* Write the bad offset value to the file */
+    if(HDwrite(fd, &val, sizeof(val)) < 0)
+        FAIL_STACK_ERROR
+
+    /* Close the file */
+    if(HDclose(fd) < 0)
+        FAIL_STACK_ERROR
+
+    return EXIT_SUCCESS;
+
+error:
+    H5E_BEGIN_TRY {
+        H5Gclose(gid1);
+        H5Gclose(gid2);
+        H5Dclose(did);
+        H5Sclose(sid);
+        H5Fclose(fid);
+    } H5E_END_TRY;
+
+    return EXIT_FAILURE;
+} /* end main() */
+