1 files changed, 12 insertions, 0 deletions
diff --git a/src/lib9/errstr.c b/src/lib9/errstr.c
index e576b12b..504ec6ec 100644
--- a/src/lib9/errstr.c
+++ b/src/lib9/errstr.c
@@ -66,3 +66,15 @@ __errfmt(Fmt *f)
 		return fmtstrcpy(f, getsyserr());
 	return fmtstrcpy(f, strerror(errno));
 }
+
+void
+werrstr(char *fmt, ...)
+{
+	va_list arg;
+	char buf[ERRMAX];
+
+	va_start(arg, fmt);
+	vseprint(buf, buf+ERRMAX, fmt, arg);
+	va_end(arg);
+	errstr(buf, ERRMAX);
+}