ruby-changes:4117
From: ko1@a...
Date: Tue, 26 Feb 2008 15:30:54 +0900 (JST)
Subject: [ruby-changes:4117] nobu - Ruby:r15607 (trunk): * array.c (rb_ary_eql, rb_ary_cmp): get rid of stack overflow with
nobu 2008-02-26 15:30:38 +0900 (Tue, 26 Feb 2008) New Revision: 15607 Modified files: trunk/ChangeLog trunk/array.c Log: * array.c (rb_ary_eql, rb_ary_cmp): get rid of stack overflow with self-recursive constructs. [ruby-Bugs-18356] http://svn.ruby-lang.org/cgi-bin/viewvc.cgi/trunk/array.c?r1=15607&r2=15606&diff_format=u http://svn.ruby-lang.org/cgi-bin/viewvc.cgi/trunk/ChangeLog?r1=15607&r2=15606&diff_format=u Index: array.c =================================================================== --- array.c (revision 15606) +++ array.c (revision 15607) @@ -317,7 +317,7 @@ rb_raise(rb_eArgError, "array size too big"); } rb_ary_modify(ary); - RESIZE_CAPA(ary, len); + RESIZE_CAPA(ary, len); if (rb_block_given_p()) { long i; @@ -2343,6 +2343,19 @@ return rb_exec_recursive(recursive_equal, ary1, ary2); } +static VALUE +recursive_eql(VALUE ary1, VALUE ary2, int recur) +{ + long i; + + if (recur) return Qfalse; + for (i=0; i<RARRAY_LEN(ary1); i++) { + if (!rb_eql(rb_ary_elt(ary1, i), rb_ary_elt(ary2, i))) + return Qfalse; + } + return Qtrue; +} + /* * call-seq: * array.eql?(other) -> true or false @@ -2354,16 +2367,10 @@ static VALUE rb_ary_eql(VALUE ary1, VALUE ary2) { - long i; - if (ary1 == ary2) return Qtrue; if (TYPE(ary2) != T_ARRAY) return Qfalse; if (RARRAY_LEN(ary1) != RARRAY_LEN(ary2)) return Qfalse; - for (i=0; i<RARRAY_LEN(ary1); i++) { - if (!rb_eql(rb_ary_elt(ary1, i), rb_ary_elt(ary2, i))) - return Qfalse; - } - return Qtrue; + return rb_exec_recursive(recursive_eql, ary1, ary2); } static VALUE @@ -2425,6 +2432,25 @@ } +static VALUE +recursive_cmp(VALUE ary1, VALUE ary2, int recur) +{ + long i, len; + + if (recur) return Qnil; + len = RARRAY_LEN(ary1); + if (len > RARRAY_LEN(ary2)) { + len = RARRAY_LEN(ary2); + } + for (i=0; i<RARRAY_LEN(ary1); i++) { + VALUE v = rb_funcall(rb_ary_elt(ary1, i), id_cmp, 1, rb_ary_elt(ary2, i)); + if (v != INT2FIX(0)) { + return v; + } + } + return Qundef; +} + /* * call-seq: * array <=> other_array -> -1, 0, +1 @@ -2448,19 +2474,13 @@ VALUE rb_ary_cmp(VALUE ary1, VALUE ary2) { - long i, len; + long len; + VALUE v; ary2 = to_ary(ary2); - len = RARRAY_LEN(ary1); - if (len > RARRAY_LEN(ary2)) { - len = RARRAY_LEN(ary2); - } - for (i=0; i<len; i++) { - VALUE v = rb_funcall(rb_ary_elt(ary1, i), id_cmp, 1, rb_ary_elt(ary2, i)); - if (v != INT2FIX(0)) { - return v; - } - } + if (ary1 == ary2) return INT2FIX(0); + v = rb_exec_recursive(recursive_cmp, ary1, ary2); + if (v != Qundef) return v; len = RARRAY_LEN(ary1) - RARRAY_LEN(ary2); if (len == 0) return INT2FIX(0); if (len > 0) return INT2FIX(1); Index: ChangeLog =================================================================== --- ChangeLog (revision 15606) +++ ChangeLog (revision 15607) @@ -1,3 +1,8 @@ +Tue Feb 26 15:30:36 2008 Nobuyoshi Nakada <nobu@r...> + + * array.c (rb_ary_eql, rb_ary_cmp): get rid of stack overflow with + self-recursive constructs. [ruby-Bugs-18356] + Tue Feb 26 01:16:01 2008 Tanaka Akira <akr@f...> * include/ruby/ruby.h (ROBJECT_NUMIV): renamed from ROBJECT_LEN. -- ML: ruby-changes@q... Info: http://www.atdot.net/~ko1/quickml/