1 files changed, 33 insertions, 0 deletions
diff --git a/test/err_syntax18.y b/test/err_syntax18.y
new file mode 100644
index 000000000000..1407af802aeb
--- /dev/null
+++ b/test/err_syntax18.y
@@ -0,0 +1,33 @@
+%{
+int yylex(void);
+static void yyerror(const char *);
+%}
+
+%%
+
+expr  :  '(' expr ')'
+            {  $$ = $4; }
+      ;
+
+%%
+
+#include <stdio.h>
+
+int
+main(void)
+{
+    printf("yyparse() = %d\n", yyparse());
+    return 0;
+}
+
+int
+yylex(void)
+{
+    return -1;
+}
+
+static void
+yyerror(const char* s)
+{
+    printf("%s\n", s);
+}