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[OpenMP] libomp: properly initialize buckets in __kmp_dephash_extend

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The buckets are initialized in __kmp_dephash_create but when they are extended
the memory is allocated but not NULL'd, potentially leaving some buckets
uninitialized after all entries have been copied into the new allocation.
This commit makes sure the buckets are properly initialized with NULL before
copying the entries.

Differential Revision: https://reviews.llvm.org/D95167
This commit is contained in:
Joseph Schuchart 2021-01-22 20:29:31 +03:00 committed by AndreyChurbanov
parent d24b94f070
commit edbcc17b7a
1 changed files with 6 additions and 0 deletions
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6
openmp/runtime/src/kmp_taskdeps.cpp
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@ -86,6 +86,12 @@ static kmp_dephash_t *__kmp_dephash_extend(kmp_info_t *thread,
h->buckets = (kmp_dephash_entry **)(h + 1);
h->generation = gen;
h->nconflicts = 0;
// make sure buckets are properly initialized
for (size_t i = 0; i < new_size; i++) {
h->buckets[i] = NULL;
}
// insert existing elements in the new table
for (size_t i = 0; i < current_dephash->size; i++) {
kmp_dephash_entry_t *next, *entry;