diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/backend/utils/mmgr/generation.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/src/backend/utils/mmgr/generation.c b/src/backend/utils/mmgr/generation.c index b858b8d0f7b..0238c111d2f 100644 --- a/src/backend/utils/mmgr/generation.c +++ b/src/backend/utils/mmgr/generation.c @@ -846,8 +846,8 @@ GenerationRealloc(void *pointer, Size size, int flags) #endif /* - * Maybe the allocated area already is >= the new size. (In particular, - * we always fall out here if the requested size is a decrease.) + * Maybe the allocated area already big enough. (In particular, we always + * fall out here if the requested size is a decrease.) * * This memory context does not use power-of-2 chunk sizing and instead * carves the chunks to be as small as possible, so most repalloc() calls @@ -855,7 +855,12 @@ GenerationRealloc(void *pointer, Size size, int flags) * * XXX Perhaps we should annotate this condition with unlikely()? */ +#ifdef MEMORY_CONTEXT_CHECKING + /* With MEMORY_CONTEXT_CHECKING, we need an extra byte for the sentinel */ + if (oldsize > size) +#else if (oldsize >= size) +#endif { #ifdef MEMORY_CONTEXT_CHECKING Size oldrequest = chunk->requested_size; |