misc/util.c: add alloc_vprintf

2 files changed, 17 insertions, 4 deletions

diff --git a/misc/util.c b/misc/util.c
index 0ca5e6b..628270d 100644
--- a/misc/util.c
+++ b/misc/util.c
@@ -18,17 +18,27 @@
 #include "misc/util.h"
 
 
-int alloc_printf(char **s, const char *fmt, ...)
+int alloc_vprintf(char **s, const char *fmt, va_list ap)
 {
-	va_list ap;
 	int res;
 
-	va_start(ap, fmt);
 	res = vasprintf(s, fmt, ap);
-	va_end(ap);
 	if (res == -1) {
 		perror("vasprintf");
 		exit(1);
 	}
 	return res;
 }
+
+
+
+int alloc_printf(char **s, const char *fmt, ...)
+{
+	va_list ap;
+	int res;
+
+	va_start(ap, fmt);
+	res = alloc_vprintf(s, fmt, ap);
+	va_end(ap);
+	return res;
+}
diff --git a/misc/util.h b/misc/util.h
index 5c195f1..ebc0762 100644
--- a/misc/util.h
+++ b/misc/util.h
@@ -14,6 +14,7 @@
 #ifndef MISC_UTIL_H
 #define MISC_UTIL_H
 
+#include <stdarg.h>
 #include <stdbool.h>
 #include <stdlib.h>
 #include <stdio.h>
@@ -71,6 +72,8 @@ static inline bool strbegins(const char *s, const char *prefix)
 }
 
 
+int alloc_vprintf(char **s, const char *fmt, va_list ap)
+    __attribute__((format(printf, 2, 0)));
 int alloc_printf(char **s, const char *fmt, ...)
     __attribute__((format(printf, 2, 3)));