#define COLD
#endif
+#if HAVE_ATTRIBUTE_NORETURN
+/**
+ * NORETURN - a function does not return
+ *
+ * Used to mark a function which exits; useful for suppressing warnings.
+ *
+ * Example:
+ * static void NORETURN fail(const char *reason)
+ * {
+ * fprintf(stderr, "Error: %s (%s)\n", reason, strerror(errno));
+ * exit(1);
+ * }
+ */
+#define NORETURN __attribute__((noreturn))
+#else
+#define NORETURN
+#endif
+
#if HAVE_ATTRIBUTE_PRINTF
/**
* PRINTF_FMT - a function takes printf-style arguments
#define HAVE_ATTRIBUTE_COLD 1
#define HAVE_ATTRIBUTE_CONST 1
#define HAVE_ATTRIBUTE_MAY_ALIAS 1
+#define HAVE_ATTRIBUTE_NORETURN 1
#define HAVE_ATTRIBUTE_PRINTF 1
#define HAVE_ATTRIBUTE_UNUSED 1
#define HAVE_ATTRIBUTE_USED 1
"static int __attribute__((const)) func(int x) { return x; }" },
{ "HAVE_ATTRIBUTE_MAY_ALIAS", OUTSIDE_MAIN, NULL,
"typedef short __attribute__((__may_alias__)) short_a;" },
+ { "HAVE_ATTRIBUTE_NORETURN", DEFINES_FUNC, NULL,
+ "#include <stdlib.h>\n"
+ "static void __attribute__((noreturn)) func(int x) { exit(x); }" },
{ "HAVE_ATTRIBUTE_PRINTF", DEFINES_FUNC, NULL,
"static void __attribute__((format(__printf__, 1, 2))) func(const char *fmt, ...) { }" },
{ "HAVE_ATTRIBUTE_UNUSED", OUTSIDE_MAIN, NULL,