diff options
| author | Peter Eisentraut <peter@eisentraut.org> | 2025-11-21 09:57:06 +0100 |
|---|---|---|
| committer | Peter Eisentraut <peter@eisentraut.org> | 2025-11-21 10:08:24 +0100 |
| commit | 97e04c74bedb902327b89eb8a9e6aea01aabdad2 (patch) | |
| tree | 3b4af6c386011bdf378b5207bd36a135042bf202 /src/backend/access/common | |
| parent | 266543a62055541ddefe4e66797e0e1e4aa8705a (diff) | |
C11 alignas instead of unions
This changes a few union members that only existed to ensure
alignments and replaces them with the C11 alignas specifier.
This change only uses fundamental alignments (meaning approximately
alignments of basic types), which all C11 compilers must support.
There are opportunities for similar changes using extended alignments,
for example in PGIOAlignedBlock, but these are not necessarily
supported by all compilers, so they are kept as a separate change.
Reviewed-by: Chao Li <li.evan.chao@gmail.com>
Discussion: https://www.postgresql.org/message-id/flat/46f05236-d4d4-4b4e-84d4-faa500f14691%40eisentraut.org
Diffstat (limited to 'src/backend/access/common')
| -rw-r--r-- | src/backend/access/common/toast_internals.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/src/backend/access/common/toast_internals.c b/src/backend/access/common/toast_internals.c index 81dbd67c725..63b848473f8 100644 --- a/src/backend/access/common/toast_internals.c +++ b/src/backend/access/common/toast_internals.c @@ -287,11 +287,9 @@ toast_save_datum(Relation rel, Datum value, bool t_isnull[3] = {0}; union { - struct varlena hdr; + alignas(int32) struct varlena hdr; /* this is to make the union big enough for a chunk: */ char data[TOAST_MAX_CHUNK_SIZE + VARHDRSZ]; - /* ensure union is aligned well enough: */ - int32 align_it; } chunk_data; int32 chunk_size; |