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backtrace.c: small refactoring in mrb_exc_backtrace(); ref #5394

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- add comment for unpacking
- avoid saving the symbol in a local variable
This commit is contained in:
Yukihiro "Matz" Matsumoto
2021-04-19 15:37:32 +09:00
parent 2275e76262
commit 13eba43100
1 changed files with 3 additions and 4 deletions
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src/backtrace.c
+3 -4
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@@ -224,16 +224,15 @@ mrb_unpack_backtrace(mrb_state *mrb, mrb_value backtrace)
MRB_API mrb_value
mrb_exc_backtrace(mrb_state *mrb, mrb_value exc)
{
mrb_sym attr_name;
mrb_value backtrace;
attr_name = MRB_SYM(backtrace);
backtrace = mrb_iv_get(mrb, exc, attr_name);
backtrace = mrb_iv_get(mrb, exc, MRB_SYM(backtrace));
if (mrb_nil_p(backtrace) || mrb_array_p(backtrace)) {
return backtrace;
}
/* unpack packed-backtrace */
backtrace = mrb_unpack_backtrace(mrb, backtrace);
mrb_iv_set(mrb, exc, attr_name, backtrace);
mrb_iv_set(mrb, exc, MRB_SYM(backtrace), backtrace);
return backtrace;
}