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From: "zsojka at seznam dot cz" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/57100] New: [4.8/4.9 Regression] ICE: in pre_and_rev_post_order_compute, at cfganal.c:869 with -fdump-rtl-pro_and_epilogue-graph
Date: Sun, 28 Apr 2013 08:15:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57100

             Bug #: 57100
           Summary: [4.8/4.9 Regression] ICE: in
                    pre_and_rev_post_order_compute, at cfganal.c:869 with
                    -fdump-rtl-pro_and_epilogue-graph
    Classification: Unclassified
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: rtl-optimization
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: zsojka@seznam.cz


Created attachment 29960
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=29960
reduced testcase

Compiler output:
$ gcc -O2 -fdump-rtl-pro_and_epilogue-graph testcase.c 
testcase.c: In function 'bar':
testcase.c:13:1: internal compiler error: in pre_and_rev_post_order_compute, at
cfganal.c:869
 }
 ^
0x68fc9a pre_and_rev_post_order_compute(int*, int*, bool)
        /mnt/svn/gcc-trunk/gcc/cfganal.c:869
0x110379c draw_cfg_nodes_no_loops
        /mnt/svn/gcc-trunk/gcc/graph.c:184
0x110379c draw_cfg_nodes
        /mnt/svn/gcc-trunk/gcc/graph.c:266
0x110379c print_graph_cfg(char const*, function*)
        /mnt/svn/gcc-trunk/gcc/graph.c:307
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.

$ gcc -v                                               
Using built-in specs.
COLLECT_GCC=/mnt/svn/gcc-trunk/binary-latest/bin/gcc
COLLECT_LTO_WRAPPER=/mnt/svn/gcc-trunk/binary-198362-lto-fortran-checking-yes-rtl-df/libexec/gcc/x86_64-unknown-linux-gnu/4.9.0/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: /mnt/svn/gcc-trunk//configure --enable-checking=yes,rtl,df
--enable-languages=c,c++,lto,fortran
--prefix=/mnt/svn/gcc-trunk/binary-198362-lto-fortran-checking-yes-rtl-df/
--without-cloog --without-ppl
Thread model: posix
gcc version 4.9.0 20130427 (experimental) (GCC) 

Tested revisions:
r198362 - crash
4.8 r198018 - crash
4.7 r198018 - OK