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-rw-r--r--src/error.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/error.c b/src/error.c
index 13373d8f8..5bb547afe 100644
--- a/src/error.c
+++ b/src/error.c
@@ -174,7 +174,7 @@ exc_get_backtrace(mrb_state *mrb, mrb_value exc)
attr_name = mrb_intern_lit(mrb, "backtrace");
backtrace = mrb_iv_get(mrb, exc, attr_name);
- if (mrb_nil_p(backtrace)) {
+ if (!mrb_array_p(backtrace)) {
if (mrb_obj_ptr(exc) == mrb->backtrace.exc && mrb->backtrace.n > 0) {
backtrace = mrb_restore_backtrace(mrb);
mrb->backtrace.n = 0;