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authornobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2015-12-13 09:25:15 +0000
committernobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2015-12-13 09:25:15 +0000
commit62539b49a7aebd4a948fef30461841e123bad461 (patch)
tree27bfabf7ec41a872d5a5827d5238539d3e876b06 /ext/tk/tkutil/tkutil.c
parentb2d3c6a86fdde1df115a039aaed49fa11cc03a9f (diff)
tkutil.c: array length
* ext/tk/tkutil/tkutil.c (cbsubst_table_setup): check length of argument arrays for each access, as callback methods can modify them. reported by Marcin 'Icewall' Noga of Cisco Talos. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@53076 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'ext/tk/tkutil/tkutil.c')
-rw-r--r--ext/tk/tkutil/tkutil.c12
1 files changed, 4 insertions, 8 deletions
diff --git a/ext/tk/tkutil/tkutil.c b/ext/tk/tkutil/tkutil.c
index adc14c0cffd..fc9ed2d5e3f 100644
--- a/ext/tk/tkutil/tkutil.c
+++ b/ext/tk/tkutil/tkutil.c
@@ -1568,7 +1568,7 @@ cbsubst_table_setup(argc, argv, self)
const VALUE *infp;
ID id;
struct cbsubst_info *subst_inf;
- long idx, len;
+ long idx;
unsigned char chr;
/* accept (key_inf, proc_inf) or (key_inf, longkey_inf, procinf) */
@@ -1594,8 +1594,7 @@ cbsubst_table_setup(argc, argv, self)
* type ==> char code or string
* ivar ==> symbol
*/
- len = RARRAY_LEN(key_inf);
- for(idx = 0; idx < len; idx++) {
+ for(idx = 0; idx < RARRAY_LEN(key_inf); idx++) {
inf = RARRAY_AREF(key_inf, idx);
if (!RB_TYPE_P(inf, T_ARRAY)) continue;
if (RARRAY_LEN(inf) < 3) continue;
@@ -1622,8 +1621,7 @@ cbsubst_table_setup(argc, argv, self)
* type ==> char code or string
* ivar ==> symbol
*/
- len = RARRAY_LEN(longkey_inf);
- for(idx = 0; idx < len; idx++) {
+ for(idx = 0; idx < RARRAY_LEN(longkey_inf); idx++) {
inf = RARRAY_AREF(longkey_inf, idx);
if (!RB_TYPE_P(inf, T_ARRAY)) continue;
if (RARRAY_LEN(inf) < 3) continue;
@@ -1652,9 +1650,7 @@ cbsubst_table_setup(argc, argv, self)
* type ==> char code or string
* proc ==> proc/method/obj (must respond to 'call')
*/
- len = RARRAY_LEN(proc_inf);
- for(idx = 0; idx < len; idx++) {
- VALUE type, proc;
+ for(idx = 0; idx < RARRAY_LEN(proc_inf); idx++) {
inf = RARRAY_AREF(proc_inf, idx);
if (!RB_TYPE_P(inf, T_ARRAY)) continue;
if (RARRAY_LEN(inf) < 2) continue;