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Fix wrong allocation size in c8f621c43.

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In c8f621c43 I forgot to account for MAXALIGN when allocating a new
tuplebuf in ReorderBufferGetTupleBuf(). That happens to currently not
cause active problems on a number of platforms because the affected
pointer is already aligned, but others, like ppc and hppa, trigger this
in the regression test, due to a debug memset clearing memory.

Fix that.

Backpatch: 9.4, like the previous commit.
This commit is contained in:
Andres Freund 2016-03-06 16:27:20 -08:00
parent b3e05097e5
commit fd45d16f62
1 changed files with 2 additions and 1 deletions
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3
src/backend/replication/logical/reorderbuffer.c
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@ -483,7 +483,8 @@ ReorderBufferGetTupleBuf(ReorderBuffer *rb, Size tuple_len)
{ {
tuple = (ReorderBufferTupleBuf *) tuple = (ReorderBufferTupleBuf *)
MemoryContextAlloc(rb->context, MemoryContextAlloc(rb->context,
sizeof(ReorderBufferTupleBuf) + alloc_len); sizeof(ReorderBufferTupleBuf) +
MAXIMUM_ALIGNOF + alloc_len);
tuple->alloc_tuple_size = alloc_len; tuple->alloc_tuple_size = alloc_len;
tuple->tuple.t_data = ReorderBufferTupleBufData(tuple); tuple->tuple.t_data = ReorderBufferTupleBufData(tuple);
} }