[Bug tree-optimization/55329] New: [4.8 Regression] ICE: internal compiler error: in operator[], at vec.h:487 with -O -fno-guess-branch-probability -fnon-call-exceptions --param=early-inlining-insns=111

[zsojka at seznam dot cz]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55329



             Bug #: 55329

           Summary: [4.8 Regression] ICE: internal compiler error: in

                    operator[], at vec.h:487 with -O

                    -fno-guess-branch-probability -fnon-call-exceptions

                    --param=early-inlining-insns=111

    Classification: Unclassified

           Product: gcc

           Version: 4.8.0

            Status: UNCONFIRMED

          Severity: normal

          Priority: P3

         Component: tree-optimization

        AssignedTo: unassig...@gcc.gnu.org

        ReportedBy: zso...@seznam.cz





Created attachment 28689

  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28689

preprocessed source; can't be significantly reduced



Compiler output:

$ gcc -O -fno-guess-branch-probability -fnon-call-exceptions

--param=early-inlining-insns=111

/mnt/svn/gcc-trunk/gcc/testsuite/g++.dg/torture/pr48271.C -save-temps

/mnt/svn/gcc-trunk/gcc/testsuite/g++.dg/torture/pr48271.C: In function 'void

stCheckReverseTrain()':                                                 

/mnt/svn/gcc-trunk/gcc/testsuite/g++.dg/torture/pr48271.C:116:6: internal

compiler error: in operator[], at vec.h:487                                

 void stCheckReverseTrain ()                                                    

      ^                                                                         

0xc8fecb vec_t<basic_block_def*>::operator[](unsigned int)                      

        /mnt/svn/gcc-trunk/gcc/vec.h:487                                        

0xc8fecb tree_ssa_dominator_optimize

        /mnt/svn/gcc-trunk/gcc/tree-ssa-dom.c:807

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.



Tested revisions:

r193495 - crash

4.7 r191640 - OK