upstream: add xvasprintf()

OpenBSD-Commit-ID: e5e3671c05c121993b034db935bce1a7aa372247

1 files changed, 14 insertions, 7 deletions

diff --git a/xmalloc.c b/xmalloc.c
index 9cd0127dd..b48d33bbf 100644
--- a/xmalloc.c
+++ b/xmalloc.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: xmalloc.c,v 1.35 2019/06/06 05:13:13 otto Exp $ */
+/* $OpenBSD: xmalloc.c,v 1.36 2019/11/12 22:32:48 djm Exp $ */
 /*
  * Author: Tatu Ylonen <ylo@cs.hut.fi>
  * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
@@ -96,17 +96,24 @@ xstrdup(const char *str)
 }
 
 int
+xvasprintf(char **ret, const char *fmt, va_list ap)
+{
+        int i;
+
+        i = vasprintf(ret, fmt, ap);
+        if (i < 0 || *ret == NULL)
+                fatal("xvasprintf: could not allocate memory");
+        return i;
+}
+
+int
 xasprintf(char **ret, const char *fmt, ...)
 {
         va_list ap;
         int i;
 
         va_start(ap, fmt);
-        i = vasprintf(ret, fmt, ap);
+        i = xvasprintf(ret, fmt, ap);
         va_end(ap);
-
-        if (i < 0 || *ret == NULL)
-                fatal("xasprintf: could not allocate memory");
-
-        return (i);
+        return i;
 }