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authorThomas Weißschuh <linux@weissschuh.net>2024-08-07 23:51:40 +0200
committerThomas Weißschuh <linux@weissschuh.net>2024-08-10 17:08:19 +0200
commit02a62b551cee585f7c2c93f54d1230d5714ff7d4 (patch)
treecddf153004d369fe40c4df3a4c8b25a20e6f230c /tools/perf/scripts/python/flamegraph.py
parent1daea158d0aae0770371f3079305a29fdb66829e (diff)
tools/nolibc: compiler: introduce __nolibc_has_attribute()
Recent compilers support __has_attribute() to check if a certain compiler attribute is supported. Unfortunately we have to first check if __has_attribute is supported in the first place and then if a specific attribute is present. These two checks can't be folded into a single condition as that would lead to errors. Nesting the two conditions like below works, but becomes ugly as soon as #else blocks are used as those need to be duplicated for both levels of #if. #if defined __has_attribute # if __has_attribute (nonnull) # define ATTR_NONNULL __attribute__ ((nonnull)) # endif #endif Introduce a new helper which makes the usage of __has_attribute() nicer and migrate the current user to it. Acked-by: Willy Tarreau <w@1wt.eu> Link: https://lore.kernel.org/r/20240807-nolibc-llvm-v2-4-c20f2f5fc7c2@weissschuh.net Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
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