compiler.h: new macro for a non-returning function

Add a new macro for a non-returning function.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/compiler.h b/compiler.h
index a3a5039d..312b027a 100644
--- a/compiler.h
+++ b/compiler.h
@@ -170,4 +170,13 @@ char *strsep(char **, const char *);
 # define unlikely(x)	(!!(x))
 #endif
 
+/*
+ * How to tell the compiler that a function doesn't return
+ */
+#ifdef __GNUC__
+# define noreturn void __attribute__((noreturn))
+#else
+# define noreturn void
+#endif
+
 #endif	/* NASM_COMPILER_H */