diff options
Diffstat (limited to 'src/include/c.h')
| -rw-r--r-- | src/include/c.h | 26 |
1 files changed, 21 insertions, 5 deletions
diff --git a/src/include/c.h b/src/include/c.h index bf4043dddf7..3a569c80602 100644 --- a/src/include/c.h +++ b/src/include/c.h @@ -355,13 +355,29 @@ typedef unsigned long long int uint64; /* * 128-bit signed and unsigned integers - * There currently is only a limited support for the type. E.g. 128bit - * literals and snprintf are not supported; but math is. + * There currently is only limited support for such types. + * E.g. 128bit literals and snprintf are not supported; but math is. + * Also, because we exclude such types when choosing MAXIMUM_ALIGNOF, + * it must be possible to coerce the compiler to allocate them on no + * more than MAXALIGN boundaries. */ #if defined(PG_INT128_TYPE) -#define HAVE_INT128 -typedef PG_INT128_TYPE int128; -typedef unsigned PG_INT128_TYPE uint128; +#if defined(pg_attribute_aligned) || ALIGNOF_PG_INT128_TYPE <= MAXIMUM_ALIGNOF +#define HAVE_INT128 1 + +typedef PG_INT128_TYPE int128 +#if defined(pg_attribute_aligned) +pg_attribute_aligned(MAXIMUM_ALIGNOF) +#endif +; + +typedef unsigned PG_INT128_TYPE uint128 +#if defined(pg_attribute_aligned) +pg_attribute_aligned(MAXIMUM_ALIGNOF) +#endif +; + +#endif #endif /* |