r140902 - in /trunk/gcc: ada/ChangeLog ada/gcc-...

[ebotcazou@gcc.gnu.org]

Author: ebotcazou
Date: Mon Oct  6 07:09:41 2008
New Revision: 140902

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=140902
Log:
2008-10-06  Eric Botcazou  <ebotcazou@adacore.com>

	* gcc-interface/utils.c (can_fold_for_view_convert_p): New predicate.
	(unchecked_convert): Use it to disable problematic folding with
	VIEW_CONVERT_EXPR in the general case.  Always disable it for the
	special VIEW_CONVERT_EXPR built for integral types and cope with
	its addressability issues by preserving the first conversion.

Added:
    trunk/gcc/testsuite/gnat.dg/unchecked_convert2.adb
Modified:
    trunk/gcc/ada/ChangeLog
    trunk/gcc/ada/gcc-interface/utils.c
    trunk/gcc/testsuite/ChangeLog