add NORETURN_PTR for function pointers

Some compilers (including at least MSVC and ARM RVDS) supports
NORETURN on function declarations, but not on function pointers.

This patch makes it possible to define NORETURN for these compilers,
by splitting the NORETURN macro into two - one for function
declarations and one for function pointers.

Signed-off-by: Erik Faye-Lund <kusmabite@gmail.com>
Signed-off-by: Jeff King <peff@peff.net>

diff --git a/git-compat-util.h b/git-compat-util.h
index bac376f4c7bc93efbc8e3c32c05ae503f3c14534..ef6080338480f509e720a484998c286ae1814b0a 100644 (file)
--- a/git-compat-util.h
+++ b/git-compat-util.h
@@ -176,8 +176,10 @@ extern char *gitbasename(char *);
 
 #ifdef __GNUC__
 #define NORETURN __attribute__((__noreturn__))
+#define NORETURN_PTR __attribute__((__noreturn__))
 #else
 #define NORETURN
+#define NORETURN_PTR
 #ifndef __attribute__
 #define __attribute__(x)
 #endif
@@ -192,7 +194,7 @@ extern NORETURN void die_errno(const char *err, ...) __attribute__((format (prin
 extern int error(const char *err, ...) __attribute__((format (printf, 1, 2)));
 extern void warning(const char *err, ...) __attribute__((format (printf, 1, 2)));
 
-extern void set_die_routine(NORETURN void (*routine)(const char *err, va_list params));
+extern void set_die_routine(NORETURN_PTR void (*routine)(const char *err, va_list params));
 
 extern int prefixcmp(const char *str, const char *prefix);
 extern time_t tm_to_time_t(const struct tm *tm);

diff --git a/usage.c b/usage.c
index 0555ce6ccd514f7dbbfafc16fa137790078e32e8..c488f3afcd6d612e786c13c86241b2a01eb97a2a 100644 (file)
--- a/usage.c
+++ b/usage.c
@@ -36,12 +36,12 @@ static void warn_builtin(const char *warn, va_list params)
 
 /* If we are in a dlopen()ed .so write to a global variable would segfault
  * (ugh), so keep things static. */
-static NORETURN void (*usage_routine)(const char *err) = usage_builtin;
-static NORETURN void (*die_routine)(const char *err, va_list params) = die_builtin;
+static NORETURN_PTR void (*usage_routine)(const char *err) = usage_builtin;
+static NORETURN_PTR void (*die_routine)(const char *err, va_list params) = die_builtin;
 static void (*error_routine)(const char *err, va_list params) = error_builtin;
 static void (*warn_routine)(const char *err, va_list params) = warn_builtin;
 
-void set_die_routine(NORETURN void (*routine)(const char *err, va_list params))
+void set_die_routine(NORETURN_PTR void (*routine)(const char *err, va_list params))
 {
        die_routine = routine;
 }