diff options
| author | Heikki Linnakangas <heikki.linnakangas@iki.fi> | 2017-05-18 22:22:13 +0300 |
|---|---|---|
| committer | Heikki Linnakangas <heikki.linnakangas@iki.fi> | 2017-05-18 22:22:13 +0300 |
| commit | 94884e1c27ccd38bf494fc7f5aa46b269bbb6c9c (patch) | |
| tree | 082565340d762270aa2de0bc148878d215d5b8d6 /src | |
| parent | 3ec76ff1f2cf52e9b900349957b42d28128b7bc7 (diff) | |
| download | postgresql-94884e1c27ccd38bf494fc7f5aa46b269bbb6c9c.tar.gz postgresql-94884e1c27ccd38bf494fc7f5aa46b269bbb6c9c.zip | |
Make slab allocator work on platforms with MAXIMUM_ALIGNOF < sizeof(int).
Notably, m68k only needs 2-byte alignment. Per report from Christoph Berg.
Discussion: https://www.postgresql.org/message-id/20170517193957.fwntkgi6epuso5l2@msg.df7cb.de
Diffstat (limited to 'src')
| -rw-r--r-- | src/backend/utils/mmgr/slab.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/src/backend/utils/mmgr/slab.c b/src/backend/utils/mmgr/slab.c index 0fcfcb4c786..e59154ddda4 100644 --- a/src/backend/utils/mmgr/slab.c +++ b/src/backend/utils/mmgr/slab.c @@ -194,9 +194,9 @@ SlabContextCreate(MemoryContext parent, MAXALIGN(sizeof(SlabChunk)), "padding calculation in SlabChunk is wrong"); - /* otherwise the linked list inside freed chunk isn't guaranteed to fit */ - StaticAssertStmt(MAXIMUM_ALIGNOF >= sizeof(int), - "MAXALIGN too small to fit int32"); + /* Make sure the linked list node fits inside a freed chunk */ + if (chunkSize < sizeof(int)) + chunkSize = sizeof(int); /* chunk, including SLAB header (both addresses nicely aligned) */ fullChunkSize = MAXALIGN(sizeof(SlabChunk) + MAXALIGN(chunkSize)); |