[PATCH 03/12] ARM: asm: setjmp: annotate setjmp/longjmp for GCC

Ahmad Fatoum a.fatoum at pengutronix.de
Mon Feb 15 05:36:56 EST 2021

To avoid invalid optimizations and to enable warnings, GCC must be told
that setjmp and longjmp are to be handled specially. Add the missing

Signed-off-by: Ahmad Fatoum <a.fatoum at pengutronix.de>
 arch/arm/include/asm/setjmp.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm/include/asm/setjmp.h b/arch/arm/include/asm/setjmp.h
index 62bac613d6e1..538d9cd50651 100644
--- a/arch/arm/include/asm/setjmp.h
+++ b/arch/arm/include/asm/setjmp.h
@@ -23,7 +23,7 @@ struct jmp_buf_data {
 typedef struct jmp_buf_data jmp_buf[1];
-int setjmp(jmp_buf jmp);
-void longjmp(jmp_buf jmp, int ret);
+int setjmp(jmp_buf jmp) __attribute__((returns_twice));
+void longjmp(jmp_buf jmp, int ret) __attribute__((noreturn));
 #endif /* _SETJMP_H_ */

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