diff options
Diffstat (limited to 'mrbgems/mruby-random/src')
| -rw-r--r-- | mrbgems/mruby-random/src/random.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/mrbgems/mruby-random/src/random.c b/mrbgems/mruby-random/src/random.c index f81d38fe6..b865244cc 100644 --- a/mrbgems/mruby-random/src/random.c +++ b/mrbgems/mruby-random/src/random.c @@ -217,13 +217,15 @@ mrb_ary_shuffle_bang(mrb_state *mrb, mrb_value ary) for (i = RARRAY_LEN(ary) - 1; i > 0; i--) { mrb_int j; + mrb_value *ptr = RARRAY_PTR(ary); mrb_value tmp; + j = mrb_fixnum(mrb_random_mt_rand(mrb, random, mrb_fixnum_value(RARRAY_LEN(ary)))); - tmp = RARRAY_PTR(ary)[i]; - mrb_ary_ptr(ary)->ptr[i] = RARRAY_PTR(ary)[j]; - mrb_ary_ptr(ary)->ptr[j] = tmp; + tmp = ptr[i]; + ptr[i] = ptr[j]; + ptr[j] = tmp; } } |