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help / color / mirror / Atom feedFrom: Bertrand Drouvot <[email protected]>
Subject: [PATCH v1 2/2] Use C11 alignas in more tricky typedef definition
Date: Tue, 24 Feb 2026 09:55:36 +0000
Same as commit "xxx" but the alignas has to be guarded because it makes sense
if used together with pg_attribute_packed().
Suggested-by: Peter Eisentraut <[email protected]>
Author: Bertrand Drouvot <[email protected]>
Discussion: https://postgr.es/m/d7a788fa-e609-4894-a8be-2f70e135424f%40eisentraut.org
---
src/include/storage/itemptr.h | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
100.0% src/include/storage/
diff --git a/src/include/storage/itemptr.h b/src/include/storage/itemptr.h
index 8b3392dbefe..a70c543dac3 100644
--- a/src/include/storage/itemptr.h
+++ b/src/include/storage/itemptr.h
@@ -35,14 +35,17 @@
*/
typedef struct ItemPointerData
{
+/* If compiler understands packed pragma, use alignas with it */
+#if defined(pg_attribute_packed)
+ alignas(2)
+#endif
BlockIdData ip_blkid;
OffsetNumber ip_posid;
}
-/* If compiler understands packed and aligned pragmas, use those */
-#if defined(pg_attribute_packed) && defined(pg_attribute_aligned)
+/* If compiler understands packed pragma, use it with alignas */
+#if defined(pg_attribute_packed)
pg_attribute_packed()
- pg_attribute_aligned(2)
#endif
ItemPointerData;
--
2.34.1
--fe1S3SCuJMoalI5t--
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