diff options
| author | Frank Mehnert <frank.mehnert@kernkonzept.com> | 2025-03-05 15:26:34 +0100 |
|---|---|---|
| committer | Waldemar Brodkorb <wbx@openadk.org> | 2025-03-22 09:11:47 +0100 |
| commit | 0ef6b7d204b851771d9c0ffbdbc81bd77f42fb25 (patch) | |
| tree | fb2e55c218f6cd3f723495e632bb464f7af24ff5 | |
| parent | f4164a55c5c946c58b5691460436ae34ce6e428c (diff) | |
stdint.h: don't define __INT64_C / __UINT64_C if already defined
Recent Clang versions (Starting from 20) have this macro built-in. The
compiler does not warn about this normally because <stdint.h> is a
system header. In special cases where stdint.h may be included as normal
header it does warn however. Avoid re-defining if a definition already
exists.
Signed-off-by: Marcus Haehnel <marcus.haehnel@kernkonzept.com>
| -rw-r--r-- | include/stdint.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/stdint.h b/include/stdint.h index 749f73697..5fedfb574 100644 --- a/include/stdint.h +++ b/include/stdint.h @@ -144,11 +144,19 @@ typedef unsigned long long int uintmax_t; # if __WORDSIZE == 64 +# ifndef __INT64_C # define __INT64_C(c) c ## L +# endif +# ifndef __UINT64_C # define __UINT64_C(c) c ## UL +# endif # else +# ifndef __INT64_C # define __INT64_C(c) c ## LL +# endif +# ifndef __UINT64_C # define __UINT64_C(c) c ## ULL +# endif # endif /* Limits of integral types. */ |