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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2017-09-01 13:52:53 -0400 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2017-09-01 13:52:53 -0400 |
| commit | b79d69b087561eb6687373031a5098b0694f9ec6 (patch) | |
| tree | 828e33ad5e008e747fe08ba2a89bb11e7d312b38 /src/include/utils/memutils.h | |
| parent | 84be67181aab22ea8723ba0625ee690223cd8785 (diff) | |
| download | postgresql-b79d69b087561eb6687373031a5098b0694f9ec6.tar.gz postgresql-b79d69b087561eb6687373031a5098b0694f9ec6.zip | |
Ensure SIZE_MAX can be used throughout our code.
Pre-C99 platforms may lack <stdint.h> and thereby SIZE_MAX. We have
a couple of places using the hack "(size_t) -1" as a fallback, but
it wasn't universally available; which means the code added in commit
2e70d6b5e fails to compile everywhere. Move that hack to c.h so that
we can rely on having SIZE_MAX everywhere.
Per discussion, it'd be a good idea to make the macro's value safe
for use in #if-tests, but that will take a bit more work. This is
just a quick expedient to get the buildfarm green again.
Back-patch to all supported branches, like the previous commit.
Discussion: https://postgr.es/m/15883.1504278595@sss.pgh.pa.us
Diffstat (limited to 'src/include/utils/memutils.h')
| -rw-r--r-- | src/include/utils/memutils.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/include/utils/memutils.h b/src/include/utils/memutils.h index c5533490668..869c59dc853 100644 --- a/src/include/utils/memutils.h +++ b/src/include/utils/memutils.h @@ -41,7 +41,7 @@ #define AllocSizeIsValid(size) ((Size) (size) <= MaxAllocSize) -#define MaxAllocHugeSize ((Size) -1 >> 1) /* SIZE_MAX / 2 */ +#define MaxAllocHugeSize (SIZE_MAX / 2) #define AllocHugeSizeIsValid(size) ((Size) (size) <= MaxAllocHugeSize) |