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[v3,3/5] cdefs.h: Enable __errordecl & __warnattr for Clang 14+

Message ID 20230617222218.642125-4-bugaevc@gmail.com
State New
Headers show
Series fcntl fortification | expand

Commit Message

Sergey Bugaev June 17, 2023, 10:22 p.m. UTC 
Clang 14 (released in March 2022) has added support for
attribute ((error)) and attribute ((warning)). Enable their usage when
Clang 14 or later is detected, to get nicer diagnostics.

https://reviews.llvm.org/D106030
https://github.com/llvm/llvm-project/commit/846e562dcc6a9a611d844dc0d123da95629a0567

Signed-off-by: Sergey Bugaev <bugaevc@gmail.com>
---
 misc/sys/cdefs.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/misc/sys/cdefs.h b/misc/sys/cdefs.h
index 6ca8ca31..9b84043f 100644
--- a/misc/sys/cdefs.h
+++ b/misc/sys/cdefs.h
@@ -208,7 +208,7 @@ 
       : __ ## f ## _chk (__VA_ARGS__, (__osz) / (__s))))
 #endif
 
-#if __GNUC_PREREQ (4,3)
+#if __GNUC_PREREQ (4,3) || __glibc_clang_prereq (14,0)
 # define __warnattr(msg) __attribute__((__warning__ (msg)))
 # define __errordecl(name, msg) \
   extern void name (void) __attribute__((__error__ (msg)))