[PATCH 2/6] Provide a NORETURN_ATTRIBUTE macro similar to PRINTF_ATTRIBUTE
Justus Winter
4winter at informatik.uni-hamburg.de
Mon Sep 24 08:21:16 PDT 2012
This attribute is understood by gcc since version 2.5. clang provides
support for testing for function attributes using __has_attribute. For
other compilers this macro evaluates to the empty string.
Signed-off-by: Justus Winter <4winter at informatik.uni-hamburg.de>
---
compat/function-attributes.h | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/compat/function-attributes.h b/compat/function-attributes.h
index 18f9090..8450a17 100644
--- a/compat/function-attributes.h
+++ b/compat/function-attributes.h
@@ -28,4 +28,20 @@
#define __has_attribute(x) 0
#endif
+/* Provide a NORETURN_ATTRIBUTE macro similar to PRINTF_ATTRIBUTE from
+ * talloc.
+ *
+ * This attribute is understood by gcc since version 2.5. clang
+ * provides support for testing for function attributes.
+ */
+#ifndef NORETURN_ATTRIBUTE
+#if (__GNUC__ >= 3 || \
+ (__GNUC__ == 2 && __GNUC_MINOR__ >= 5) || \
+ __has_attribute (noreturn))
+#define NORETURN_ATTRIBUTE __attribute__ ((noreturn))
+#else
+#define NORETURN_ATTRIBUTE
+#endif
+#endif
+
#endif
--
1.7.10.4
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