include/xalloc: add xvasprintf()

Signed-off-by: Karel Zak <kzak@redhat.com>

diff --git a/include/xalloc.h b/include/xalloc.h
index 105d713b15d66b27ba0710cb2c3257850881b0df..f012fb2946d3bd6790694f644f1f95e86c5f8914 100644 (file)
--- a/include/xalloc.h
+++ b/include/xalloc.h
@@ -91,6 +91,14 @@ static inline int __attribute__ ((__format__(printf, 2, 3)))
        return ret;
 }
 
+static inline int xvasprintf(char **strp, const char *fmt, va_list ap)
+{
+       int ret = vasprintf(&(*strp), fmt, ap);
+       if (ret < 0)
+               err(XALLOC_EXIT_CODE, "cannot allocate string");
+       return ret;
+}
+
 
 static inline char * __attribute__((warn_unused_result)) xgethostname(void)
 {