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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2022-03-26 14:29:29 -0400 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2022-03-26 14:29:40 -0400 |
| commit | 0144c9c7e73dc75f9cd5297c7c380d55927beb75 (patch) | |
| tree | 0f104d0b1157d2e701643db107d79884df6dd78d /contrib/pageinspect/gistfuncs.c | |
| parent | 579cef5faf11b63a312691e086415b37d7888b5a (diff) | |
| download | postgresql-0144c9c7e73dc75f9cd5297c7c380d55927beb75.tar.gz postgresql-0144c9c7e73dc75f9cd5297c7c380d55927beb75.zip | |
Suppress compiler warning in relptr_store().
clang 13 with -Wextra warns that "performing pointer subtraction with
a null pointer has undefined behavior" in the places where freepage.c
tries to set a relptr variable to constant NULL. This appears to be
a compiler bug, but it's unlikely to get fixed instantly. Fortunately,
we can work around it by introducing an inline support function, which
seems like a good change anyway because it removes the macro's existing
double-evaluation hazard.
Backpatch to v10 where this code was introduced.
Patch by me, based on an idea of Andres Freund's.
Discussion: https://postgr.es/m/48826.1648310694@sss.pgh.pa.us
Diffstat (limited to 'contrib/pageinspect/gistfuncs.c')
0 files changed, 0 insertions, 0 deletions