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* array.c (rb_ary_permutation): add gc guard codes.

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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@13991 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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ko1 2007-11-21 06:06:10 +00:00
parent d154b1c346
commit 53b3bf961c
2 changed files with 8 additions and 2 deletions
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ChangeLog
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@ -1,3 +1,7 @@
Wed Nov 21 14:55:13 2007 Koichi Sasada <ko1@atdot.net>
* array.c (rb_ary_permutation): add gc guard codes.
Wed Nov 21 03:12:50 2007 Yukihiro Matsumoto <matz@ruby-lang.org>
* process.c (rb_f_system): returns nil on execution failure.

6
array.c
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@ -3047,15 +3047,17 @@ rb_ary_permutation(int argc, VALUE *argv, VALUE ary)
}
}
else { /* this is the general case */
volatile VALUE t0 = tmpbuf(n,sizeof(long));
VALUE t0 = tmpbuf(n,sizeof(long));
long *p = (long*)RSTRING_PTR(t0);
volatile VALUE t1 = tmpbuf(n,sizeof(int));
VALUE t1 = tmpbuf(n,sizeof(int));
int *used = (int*)RSTRING_PTR(t1);
VALUE ary0 = ary_make_shared(ary); /* private defensive copy of ary */
for (i = 0; i < n; i++) used[i] = 0; /* initialize array */
permute0(n, r, p, 0, used, ary0); /* compute and yield permutations */
RB_GC_GUARD(t0);
RB_GC_GUARD(t1);
}
return ary;
}