1 files changed, 1 insertions, 1 deletions
diff --git a/io.c b/io.c
index da1e5c1405..632e3500c9 100644
--- a/io.c
+++ b/io.c
@@ -4448,7 +4448,7 @@ pipe_open(struct rb_exec_arg *eargp, VALUE prog, const char *modestr, int fmode,
     struct popen_arg arg;
 #elif defined(_WIN32)
     volatile VALUE argbuf;
-    char **args;
+    char **args = NULL;
     struct rb_exec_arg sarg;
     int pair[2], write_pair[2];
 #endif