1 files changed, 1 insertions, 1 deletions
diff --git a/error.c b/error.c
index 217740f9d9..ca563722ba 100644
--- a/error.c
+++ b/error.c
@@ -970,7 +970,7 @@ nometh_err_args(VALUE self)
 void
 rb_invalid_str(const char *str, const char *type)
 {
-    VALUE s = rb_str_inspect(rb_str_new2(str));
+    volatile VALUE s = rb_str_inspect(rb_str_new2(str));
 
     rb_raise(rb_eArgError, "invalid value for %s: %s", type, RSTRING_PTR(s));
 }