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Fix possible segfault when accessing backtrace with MRB_WORD_BOXING.

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This commit is contained in:
Simon Génier
2015-02-05 15:12:21 -05:00
parent 4957c85269
commit df382dea73
1 changed files with 11 additions and 2 deletions
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src/backtrace.c
+11 -2
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@@ -132,9 +132,18 @@ output_backtrace(mrb_state *mrb, mrb_int ciidx, mrb_code *pc0, output_stream_fun
static void
exc_output_backtrace(mrb_state *mrb, struct RObject *exc, output_stream_func func, void *stream)
{
mrb_value lastpc;
mrb_code *code;
lastpc = mrb_obj_iv_get(mrb, exc, mrb_intern_lit(mrb, "lastpc"));
if (mrb_nil_p(lastpc)) {
code = NULL;
} else {
code = (mrb_code*)mrb_cptr(lastpc);
}
output_backtrace(mrb, mrb_fixnum(mrb_obj_iv_get(mrb, exc, mrb_intern_lit(mrb, "ciidx"))),
(mrb_code*)mrb_cptr(mrb_obj_iv_get(mrb, exc, mrb_intern_lit(mrb, "lastpc"))),
func, stream);
code, func, stream);
}
/* mrb_print_backtrace/mrb_get_backtrace: