gcc/gcc43-pr36741-revert.patch

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2008-09-17 21:48:16 +00:00
Revert:
2008-08-28 Dodji Seketeli <dodji@redhat.com>
PR c++/36741
* tree.c (int_fits_type_p): Don't forget unsigned integers
of type sizetype which higher end word equals -1.
* g++.dg/other/new-size-type.C: New test.
--- gcc/tree.c (revision 139711)
+++ gcc/tree.c (revision 139710)
@@ -6296,21 +6296,6 @@ int_fits_type_p (const_tree c, const_tre
for "unknown if constant fits", 0 for "constant known *not* to fit" and 1
for "constant known to fit". */
- if (TREE_TYPE (c) == sizetype
- && TYPE_UNSIGNED (TREE_TYPE (c))
- && TREE_INT_CST_HIGH (c) == -1
- && !TREE_OVERFLOW (c))
- /* So c is an unsigned integer which type is sizetype.
- sizetype'd integers are sign extended even though they are
- unsigned. If the integer value fits in the lower end word of c,
- and if the higher end word has all its bits set to 1, that
- means the higher end bits are set to 1 only for sign extension.
- So let's convert c into an equivalent zero extended unsigned
- integer. */
- c = force_fit_type_double (size_type_node,
- TREE_INT_CST_LOW (c),
- TREE_INT_CST_HIGH (c),
- false, false);
/* Check if C >= type_low_bound. */
if (type_low_bound && TREE_CODE (type_low_bound) == INTEGER_CST)
{
--- gcc/testsuite/g++.dg/other/new-size-type.C (revision 139711)
+++ gcc/testsuite/g++.dg/other/new-size-type.C (revision 139710)
@@ -1,10 +1,10 @@
// Contributed by Dodji Seketeli <dodji@redhat.com>
// Origin: PR c++/36741
#include <stddef.h>
const char*
foo()
{
- return new char[~static_cast<size_t>(0)];// { dg-bogus "large" }
+ return new char[~static_cast<size_t>(0)];// { dg-bogus "large" "" { xfail *-*-* } }
}