From 4b42315a77d478bfadbd8c67cd588ddeac4edbcd Mon Sep 17 00:00:00 2001 From: rguenth Date: Mon, 15 Dec 2014 12:20:10 +0000 Subject: 2014-12-15 Richard Biener 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. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@218746 138bc75d-0d04-0410-961f-82ee72b054a4 --- gcc/cfgloop.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'gcc/cfgloop.c') diff --git a/gcc/cfgloop.c b/gcc/cfgloop.c index 5c5cedc5a8c..40fb5a1cec0 100644 --- a/gcc/cfgloop.c +++ b/gcc/cfgloop.c @@ -1928,9 +1928,10 @@ bb_loop_depth (const_basic_block bb) void mark_loop_for_removal (loop_p loop) { + if (loop->header == NULL) + return; loop->former_header = loop->header; loop->header = NULL; loop->latch = NULL; loops_state_set (LOOPS_NEED_FIXUP); } - -- cgit v1.2.1