[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

[zsojka at seznam dot cz]

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: unassig...@gcc.gnu.org

        ReportedBy: zso...@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