ci->err may be out of boud; close #1583

5b51b119 · Yukihiro "Matz" Matsumoto · 7ca2763f · 5b51b119
Commit 5b51b119 authored Nov 18, 2013 by Yukihiro "Matz" Matsumoto
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src/backtrace.c src/backtrace.c +1 -1

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--- a/src/backtrace.c
+++ b/src/backtrace.c
@@ -81,7 +81,7 @@ mrb_output_backtrace(mrb_state *mrb, struct RObject *exc, output_stream_func fun
      mrb_irep *irep = ci->proc->body.irep;
      mrb_code *pc;

-      if (mrb->c->cibase[i].err) {
+      if (mrb->c->cibase[i].err && irep && mrb->c->cibase[i].err - irep->iseq < irep->ilen) {
        pc = mrb->c->cibase[i].err;
      }
      else if (i+1 <= ciidx) {