parse.y: Fix memory leak at parse error

Local variable tables might leak at the parse error.

1 files changed, 6 insertions, 0 deletions

diff --git a/parse.y b/parse.y
index 6461b73c73..8bfb7f2757 100644
--- a/parse.y
+++ b/parse.y
@@ -6353,11 +6353,17 @@ yycompile(VALUE vparser, struct parser_params *p, VALUE fname, int line)
     }
     p->ruby_sourceline = line - 1;
 
+    p->lvtbl = NULL;
+
     p->ast = ast = rb_ast_new();
     rb_suppress_tracing(yycompile0, (VALUE)p);
     p->ast = 0;
     RB_GC_GUARD(vparser); /* prohibit tail call optimization */
 
+    while (p->lvtbl) {
+        local_pop(p);
+    }
+
     return ast;
 }
 #endif /* !RIPPER */