diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/backend/utils/mmgr/slab.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/src/backend/utils/mmgr/slab.c b/src/backend/utils/mmgr/slab.c index 11a126acf36..d6be4fe6603 100644 --- a/src/backend/utils/mmgr/slab.c +++ b/src/backend/utils/mmgr/slab.c @@ -547,14 +547,14 @@ SlabFree(MemoryContext context, void *pointer) /* * SlabRealloc - * As Slab is designed for allocating equally-sized chunks of memory, it - * can't really do an actual realloc. + * Change the allocated size of a chunk. * - * We try to be gentle and allow calls with exactly the same size as in that - * case we can simply return the same chunk. When the size differs, we fail - * with assert failure or return NULL. + * As Slab is designed for allocating equally-sized chunks of memory, it can't + * do an actual chunk size change. We try to be gentle and allow calls with + * exactly the same size, as in that case we can simply return the same + * chunk. When the size differs, we throw an error. * - * We might be even support cases with (size < chunkSize). That however seems + * We could also allow requests with size < chunkSize. That however seems * rather pointless - Slab is meant for chunks of constant size, and moreover * realloc is usually used to enlarge the chunk. */ @@ -570,6 +570,7 @@ SlabRealloc(MemoryContext context, void *pointer, Size size) return pointer; elog(ERROR, "slab allocator does not support realloc()"); + return NULL; /* keep compiler quiet */ } /* |