diff options
Diffstat (limited to 'src/backtrace.c')
| -rw-r--r-- | src/backtrace.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/src/backtrace.c b/src/backtrace.c index 232d1c2f4..ddeb2a3ca 100644 --- a/src/backtrace.c +++ b/src/backtrace.c @@ -215,11 +215,14 @@ packed_backtrace(mrb_state *mrb) void mrb_keep_backtrace(mrb_state *mrb, mrb_value exc) { + mrb_sym sym = mrb_intern_lit(mrb, "backtrace"); mrb_value backtrace; - int ai = mrb_gc_arena_save(mrb); + int ai; + if (mrb_iv_defined(mrb, exc, sym)) return; + ai = mrb_gc_arena_save(mrb); backtrace = packed_backtrace(mrb); - mrb_iv_set(mrb, exc, mrb_intern_lit(mrb, "backtrace"), backtrace); + mrb_iv_set(mrb, exc, sym, backtrace); mrb_gc_arena_restore(mrb, ai); } |