[Bug middle-end/64246] [5 Regression] ICE building libada for Windows due to NULL loop header

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64246

--- Comment #11 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Mon Dec 15 12:20:10 2014
New Revision: 218746

URL: https://gcc.gnu.org/viewcvs?rev=218746&root=gcc&view=rev
Log:
2014-12-15  Richard Biener  <rguenther@suse.de>

    PR middle-end/64246
    * cfgloop.c (mark_loop_for_removal): Make safe against multiple
    invocations on the same loop.

    * gnat.dg/opt46.adb: New testcase.
    * gnat.dg/opt46.ads: Likewise.
    * gnat.dg/opt46_pkg.adb: Likewise.
    * gnat.dg/opt46_pkg.ads: Likewise.

Added:
    trunk/gcc/testsuite/gnat.dg/opt46.adb
    trunk/gcc/testsuite/gnat.dg/opt46.ads
    trunk/gcc/testsuite/gnat.dg/opt46_pkg.adb
    trunk/gcc/testsuite/gnat.dg/opt46_pkg.ads
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/cfgloop.c
    trunk/gcc/testsuite/ChangeLog