From: Matthew Fernandez <matthew.fernandez@gmail.com>
Date: Sun, 14 Feb 2021 17:03:17 +0000 (-0800)
Subject: silence some -Wimplicit-fallthrough warnings
X-Git-Tag: 2.47.0~49^2
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=b85122f37e45fdab3184731bf667b28d38f0da2e;p=graphviz

silence some -Wimplicit-fallthrough warnings
---

diff --git a/cmd/lefty/aix_mods/common.h b/cmd/lefty/aix_mods/common.h
index c5b47b424..08b15b005 100644
--- a/cmd/lefty/aix_mods/common.h
+++ b/cmd/lefty/aix_mods/common.h
@@ -78,8 +78,17 @@ extern "C" {
     char *buildpath(char *, int);
     char *buildcommand(char *, char *, int, int, char *);
     void warning(char *, int, char *, char *, ...);
-    void panic1(char *, int, char *, char *, ...);
-    void panic2(char *, int, char *, char *, ...);
+
+#ifdef __GNUC__
+  // FIXME: use _Noreturn for all compilers when we move to C11
+  #define NORETURN __attribute__((noreturn))
+#else
+  #define NORETURN /* nothing */
+#endif
+    NORETURN void panic1(char *, int, char *, char *, ...);
+    NORETURN void panic2(char *, int, char *, char *, ...);
+#undef NORETURN
+
 #endif				/* _COMMON_H */
 
 #ifdef __cplusplus
diff --git a/cmd/lefty/common.h b/cmd/lefty/common.h
index c2eade08f..6249d67d0 100644
--- a/cmd/lefty/common.h
+++ b/cmd/lefty/common.h
@@ -96,8 +96,17 @@ void term (void);
 char *buildpath (char *, int);
 char *buildcommand (char *, char *, int, int, char *);
 void warning (char *, int, char *, char *, ...);
-void panic1 (char *, int, char *, char *, ...);
-void panic2 (char *, int, char *, char *, ...);
+
+#ifdef __GNUC__
+  // FIXME: use _Noreturn for all compilers when we move to C11
+  #define NORETURN __attribute__((noreturn))
+#else
+  #define NORETURN /* nothing */
+#endif
+NORETURN void panic1 (char *, int, char *, char *, ...);
+NORETURN void panic2 (char *, int, char *, char *, ...);
+#undef NORETURN
+
 #endif /* _COMMON_H */
 
 #ifdef __cplusplus