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| author | David Young <dyoung@hdfgroup.org> | 2020-03-24 20:30:09 (GMT) |
|---|---|---|
| committer | David Young <dyoung@hdfgroup.org> | 2020-03-24 20:30:09 (GMT) |
| commit | ad8460cc16666267fdece9f75cba6d9732f1f46b (patch) | |
| tree | 79d52b142cb23b3e8bf3c31d5ed15940e749bda4 /test | |
| parent | e7b2095809f1711b0b08a9cbb46cbd058d3d3297 (diff) | |
| download | hdf5-ad8460cc16666267fdece9f75cba6d9732f1f46b.zip hdf5-ad8460cc16666267fdece9f75cba6d9732f1f46b.tar.gz hdf5-ad8460cc16666267fdece9f75cba6d9732f1f46b.tar.bz2 | |
When creating a shadow index for testing, increase the page number from
one entry to the next by *at least* 1 so that the index is well-formed.
This fixes a crash that occurred with H5_SHADOW_INDEX_SEED=1585006453.
Diffstat (limited to 'test')
| -rw-r--r-- | test/vfd_swmr.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/test/vfd_swmr.c b/test/vfd_swmr.c index 4aa5390..fd9e752 100644 --- a/test/vfd_swmr.c +++ b/test/vfd_swmr.c @@ -2717,6 +2717,8 @@ test_shadow_index_lookup(void) const uint64_t modulus = UINT64_MAX / MAX(1, cursize); uint64_t pageno; + assert(modulus > 1); // so that modulus - 1 > 0, below + idx = calloc(cursize, sizeof(*idx)); if (idx == NULL) { fprintf(stderr, "couldn't allocate %" PRIu32 " indices\n", @@ -2725,7 +2727,7 @@ test_shadow_index_lookup(void) } for (pageno = (uint64_t)random() % modulus, j = 0; j < cursize; - j++, pageno += (uint64_t)random() % modulus) { + j++, pageno += 1 + (uint64_t)random() % (modulus - 1)) { idx[j].hdf5_page_offset = pageno; } for (j = 0; j < cursize; j++) { |