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--- a/lex.c
+++ b/lex.c
@@ -107,7 +107,7 @@
 yylex()
 {
     char *p = line + linelim;
-    int ret;
+    int ret = 0;
     static int isfunc = 0;
     static bool isgoto = 0;
     static bool colstate = 0;