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[9/9] kbuild: enable -Wformat-truncation on clang

Message ID 20240326223825.4084412-10-arnd@kernel.org (mailing list archive)
State New
Headers show
Series enabled -Wformat-truncation for clang | expand

Commit Message

Arnd Bergmann March 26, 2024, 10:38 p.m. UTC 
From: Arnd Bergmann <arnd@arndb.de>

This warning option still produces output on gcc but is now clean when
building with clang, so enable it conditionally on the compiler for now.

As far as I can tell, the remaining warnings with gcc are the result of
analysing the code more deeply across inlining, while clang only does
this within a function.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 scripts/Makefile.extrawarn | 2 ++
 1 file changed, 2 insertions(+)
diff mbox series

Patch

diff --git a/scripts/Makefile.extrawarn b/scripts/Makefile.extrawarn
index bff6c686df7c..aa1c716c4812 100644
--- a/scripts/Makefile.extrawarn
+++ b/scripts/Makefile.extrawarn
@@ -99,7 +99,9 @@  KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable)
 KBUILD_CFLAGS += $(call cc-disable-warning, unused-const-variable)
 KBUILD_CFLAGS += $(call cc-disable-warning, packed-not-aligned)
 KBUILD_CFLAGS += $(call cc-disable-warning, format-overflow)
+ifdef CONFIG_CC_IS_GCC
 KBUILD_CFLAGS += $(call cc-disable-warning, format-truncation)
+endif
 KBUILD_CFLAGS += $(call cc-disable-warning, stringop-truncation)
 
 KBUILD_CFLAGS += -Wno-override-init # alias for -Wno-initializer-overrides in clang