[Bug ada/42253] [4.4/4.5 regression] run time crash on null for thin pointers

["ebotcazou at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

------- Comment #6 from ebotcazou at gcc dot gnu dot org  2010-02-27 14:27 -------
Subject: Bug 42253

Author: ebotcazou
Date: Sat Feb 27 14:27:27 2010
New Revision: 157107

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=157107
Log:
        PR ada/42253
        * gcc-interface/utils2.c (build_binary_op) <EQ_EXPR>: Assert that fat
        pointer base types are variant of each other.  Apply special treatment
        for null to fat pointer types in all cases.

Added:
    trunk/gcc/testsuite/gnat.dg/thin_pointer1.adb
      - copied, changed from r157105,
trunk/gcc/testsuite/gnat.dg/thin_pointer.adb
    trunk/gcc/testsuite/gnat.dg/thin_pointer1.ads
      - copied, changed from r157105,
trunk/gcc/testsuite/gnat.dg/thin_pointer.ads
    trunk/gcc/testsuite/gnat.dg/thin_pointer2.adb
    trunk/gcc/testsuite/gnat.dg/thin_pointer2_pkg.adb
    trunk/gcc/testsuite/gnat.dg/thin_pointer2_pkg.ads
Removed:
    trunk/gcc/testsuite/gnat.dg/thin_pointer.adb
    trunk/gcc/testsuite/gnat.dg/thin_pointer.ads
Modified:
    trunk/gcc/ada/ChangeLog
    trunk/gcc/ada/gcc-interface/utils2.c
    trunk/gcc/testsuite/ChangeLog


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42253