------- Comment #2 from rguenth at gcc dot gnu dot org 2008-05-13 12:54 -------
Part of the fix is
Index: fold-const.c
===================================================================
--- fold-const.c (revision 135255)
+++ fold-const.c (working copy)
@@ -6831,7 +6831,8 @@ fold_sign_changed_comparison (enum tree_
&& TREE_TYPE (TREE_OPERAND (arg1, 0)) == inner_type))
return NULL_TREE;
- if (TYPE_UNSIGNED (inner_type) != TYPE_UNSIGNED (outer_type)
+ if ((TYPE_UNSIGNED (inner_type) != TYPE_UNSIGNED (outer_type)
+ || POINTER_TYPE_P (inner_type) != POINTER_TYPE_P (outer_type))
&& code != NE_EXPR
&& code != EQ_EXPR)
return NULL_TREE;
but the question is if the folding to POINTER_PLUS is correct at all.
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|unassigned at gcc dot gnu |rguenth at gcc dot gnu dot
|dot org |org
Status|UNCONFIRMED |ASSIGNED
Ever Confirmed|0 |1
Last reconfirmed|0000-00-00 00:00:00 |2008-05-13 12:54:21
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36227
