1 files changed, 2 insertions, 2 deletions
diff --git a/parse.y b/parse.y
index aca2b6ac3e..f822bac773 100644
--- a/parse.y
+++ b/parse.y
@@ -9685,7 +9685,7 @@ rb_enc_symname2_p(const char *name, long len, rb_encoding *enc)
     const char *e = m + len;
     int localid = FALSE;
 
-    if (!m) return FALSE;
+    if (!m || len <= 0) return FALSE;
     switch (*m) {
       case '\0':
 	return FALSE;
@@ -9738,8 +9738,8 @@ rb_enc_symname2_p(const char *name, long len, rb_encoding *enc)
 	break;
 
       case '!':
+	if (len == 1) return FALSE;
 	switch (*++m) {
-	  case '\0': return TRUE;
 	  case '=': case '~': ++m; break;
 	  default: return FALSE;
 	}