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string.c: do not use garbage object

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* string.c (fstr_update_callback): should not access garbage
  object contents, copy from the argument instead.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@46728 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2014-07-06 23:47:17 +00:00
parent 7ad35210a3
commit 69e9b27a28
1 changed files with 3 additions and 3 deletions
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6
string.c
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@ -194,6 +194,7 @@ fstr_update_callback(st_data_t *key, st_data_t *value, st_data_t arg, int existi
* at next time */
if (rb_objspace_garbage_object_p(str)) {
str = *fstr;
goto create_new_fstr;
}
@ -219,7 +220,6 @@ fstr_update_callback(st_data_t *key, st_data_t *value, st_data_t arg, int existi
VALUE
rb_fstring(VALUE str)
{
VALUE fstr = Qnil;
Check_Type(str, T_STRING);
if (!frozen_strings)
@ -228,8 +228,8 @@ rb_fstring(VALUE str)
if (FL_TEST(str, RSTRING_FSTR))
return str;
st_update(frozen_strings, (st_data_t)str, fstr_update_callback, (st_data_t)&fstr);
return fstr;
st_update(frozen_strings, (st_data_t)str, fstr_update_callback, (st_data_t)&str);
return str;
}
static VALUE