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error.c: evaluate RARRAY_AREF once

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* error.c (rb_check_backtrace): evaluate RARRAY_AREF only once.
  the first argument of RB_TYPE_P is expanded twice for non-immediate
  types.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41469 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2013-06-20 04:14:09 +00:00
parent a12c414d7e
commit c81f8578c8
2 changed files with 8 additions and 1 deletions
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6
ChangeLog
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@ -1,3 +1,9 @@
Thu Jun 20 13:14:06 2013 Nobuyoshi Nakada <nobu@ruby-lang.org>
* error.c (rb_check_backtrace): evaluate RARRAY_AREF only once.
the first argument of RB_TYPE_P is expanded twice for non-immediate
types.
Thu Jun 20 08:09:29 2013 Koichi Sasada <ko1@atdot.net>
* tool/gcbench.rb: Summary in one line.

3
error.c
View File

@ -721,7 +721,8 @@ rb_check_backtrace(VALUE bt)
rb_raise(rb_eTypeError, err);
}
for (i=0;i<RARRAY_LEN(bt);i++) {
if (!RB_TYPE_P(RARRAY_AREF(bt, i), T_STRING)) {
VALUE e = RARRAY_AREF(bt, i);
if (!RB_TYPE_P(e, T_STRING)) {
rb_raise(rb_eTypeError, err);
}
}