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Fix bug in generation.c's valgrind support.

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This doesn't look like the last such bug, but it's one that the
test_decoding regression test is tripping over.  Per buildfarm.

Tomas Vondra

Discussion: https://postgr.es/m/c903f275-2150-fa52-64bf-dca7b53ebf8d@fuzzy.cz
This commit is contained in:
Tom Lane 2017-11-24 13:43:34 -05:00
parent 9c55391f0f
commit cc3c4af4a9
1 changed files with 5 additions and 0 deletions
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5
src/backend/utils/mmgr/generation.c
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@ -409,9 +409,14 @@ GenerationAlloc(MemoryContext context, Size size)
chunk = (GenerationChunk *) block->freeptr;
/* Prepare to initialize the chunk header. */
VALGRIND_MAKE_MEM_UNDEFINED(chunk, Generation_CHUNKHDRSZ);
block->nchunks += 1;
block->freeptr += (Generation_CHUNKHDRSZ + chunk_size);
Assert(block->freeptr <= block->endptr);
chunk->block = block;
chunk->context = set;