1 files changed, 1 insertions, 0 deletions

diff --git a/openbsd-compat/bsd-asprintf.c b/openbsd-compat/bsd-asprintf.c
index 3368195d4..db57acce9 100644
--- a/openbsd-compat/bsd-asprintf.c
+++ b/openbsd-compat/bsd-asprintf.c
@@ -47,6 +47,7 @@ vasprintf(char **str, const char *fmt, va_list ap)
         char *string, *newstr;
         size_t len;
 
+        va_start(ap);
         VA_COPY(ap2, ap);
         if ((string = malloc(INIT_SZ)) == NULL)
                 goto fail;