* eval_method.ci (rb_attr): should not use alloca for unknowen size

  input.  [ruby-dev:31816]

* parse.y (rb_intern_str): prevent str from optimization.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@13494 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 6 deletions

diff --git a/eval_method.ci b/eval_method.ci
index 762e05aff7..a647335ed6 100644
--- a/eval_method.ci
+++ b/eval_method.ci
@@ -409,10 +409,8 @@ void
 rb_attr(VALUE klass, ID id, int read, int write, int ex)
 {
     const char *name;
-    char *buf;
     ID attriv;
     int noex;
-    size_t len;
 
     if (!ex) {
 	noex = NOEX_PUBLIC;
@@ -439,10 +437,7 @@ rb_attr(VALUE klass, ID id, int read, int write, int ex)
     if (!name) {
 	rb_raise(rb_eArgError, "argument needs to be symbol or string");
     }
-    len = strlen(name) + 2;
-    buf = ALLOCA_N(char, len);
-    snprintf(buf, len, "@%s", name);
-    attriv = rb_intern(buf);
+    attriv = rb_intern_str(rb_sprintf("@%s", name));
     if (read) {
 	rb_add_method(klass, id, NEW_IVAR(attriv), noex);
     }