* string.c (rb_str_sum): wrong cast caused wrong result.

[ruby-dev:24385]

* enum.c (enum_sort_by): hide temporary array from
  ObjectSpace.each_object.  [ruby-dev:24386]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@6981 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,5 +1,11 @@
 Sat Oct  2 00:42:20 2004  Yukihiro Matsumoto  <matz@ruby-lang.org>
 
+	* string.c (rb_str_sum): wrong cast caused wrong result.
+	  [ruby-dev:24385]
+
+	* enum.c (enum_sort_by): hide temporary array from
+	  ObjectSpace.each_object.  [ruby-dev:24386]
+
 	* string.c (rb_str_sum): check was done with false pointer.
 	  [ruby-dev:24383]
 

enum.c

@@ -493,6 +493,7 @@ enum_sort_by(obj)
     else {
 	ary = rb_ary_new();
     }
+    RBASIC(ary)->klass = 0;
     rb_iterate(rb_each, obj, sort_by_i, ary);
     if (RARRAY(ary)->len > 1) {
 	rb_iterate(rb_ary_sort_bang, ary, sort_by_cmp, ary);
@@ -500,6 +501,7 @@ enum_sort_by(obj)
     for (i=0; i<RARRAY(ary)->len; i++) {
 	RARRAY(ary)->ptr[i] = RNODE(RARRAY(ary)->ptr[i])->u2.value;
     }
+    RBASIC(ary)->klass = rb_cArray;
     return ary;
 }
 

string.c

@@ -4417,34 +4417,34 @@ rb_str_sum(argc, argv, str)
     len = RSTRING(str)->len;
     pend = p + len;
     if (bits > sizeof(long)*CHAR_BIT) {
-	VALUE res = INT2FIX(0);
-	VALUE mod;
-
-	mod = rb_funcall(INT2FIX(1), rb_intern("<<"), 1, INT2FIX(bits));
-	mod = rb_funcall(mod, '-', 1, INT2FIX(1));
+	VALUE sum = INT2FIX(0);
 
 	while (p < pend) {
 	    str_mod_check(str, ptr, len);
-	    res = rb_funcall(res, '+', 1, INT2FIX((unsigned int)*p));
+	    sum = rb_funcall(sum, '+', 1, INT2FIX((unsigned char)*p));
 	    p++;
 	}
-	res = rb_funcall(res, '&', 1, mod);
-	return res;
+	if (bits != 0) {
+	    VALUE mod;
+
+	    mod = rb_funcall(INT2FIX(1), rb_intern("<<"), 1, INT2FIX(bits));
+	    mod = rb_funcall(mod, '-', 1, INT2FIX(1));
+	    sum = rb_funcall(sum, '&', 1, mod);
+	}
+	return sum;
     }
     else {
-	unsigned int res = 0;
-	unsigned int mod = (1<<bits)-1;
+	unsigned int sum = 0;
 
-	if (mod == 0) {
-	    mod = -1;
-	}
 	while (p < pend) {
 	    str_mod_check(str, ptr, len);
-	    res += (unsigned int)*p;
+	    sum += (unsigned char)*p;
 	    p++;
 	}
-	res &= mod;
-	return rb_int2inum(res);
+	if (bits != 0) {
+	    sum &= (1<<bits)-1;
+	}
+	return rb_int2inum(sum);
     }
 }