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Subject: [Bug rtl-optimization/55330] New: [4.8 Regression] ICE: Maximum number of LRA constraint passes is achieved (15) on gfortran.dg/actual_array_constructor_1.f90
Date: Wed, 14 Nov 2012 20:59:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55330

             Bug #: 55330
           Summary: [4.8 Regression] ICE: Maximum number of LRA constraint
                    passes is achieved (15) on
                    gfortran.dg/actual_array_constructor_1.f90
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: rtl-optimization
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: zsojka@seznam.cz


Created attachment 28690
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28690
gfortran.dg/actual_array_constructor_1.f90

Compiler output:
$ gcc -O -fPIC -fno-dse -fno-guess-branch-probability
actual_array_constructor_1.f90
actual_array_constructor_1.f90: In function 'p':
actual_array_constructor_1.f90:20:0: internal compiler error: Maximum number of
LRA constraint passes is achieved (15)

   end subroutine
 ^
0x95f97e lra_constraints(bool)
        /mnt/svn/gcc-trunk/gcc/lra-constraints.c:3284
0x94ec3c lra(_IO_FILE*)
        /mnt/svn/gcc-trunk/gcc/lra.c:2274
0x906456 do_reload
        /mnt/svn/gcc-trunk/gcc/ira.c:4624
0x906456 rest_of_handle_reload
        /mnt/svn/gcc-trunk/gcc/ira.c:4737
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.


Another set of compiler flags with the same result:
$ gcc -O -fPIC -fstack-protector -fno-guess-branch-probability
actual_array_constructor_1.f90
actual_array_constructor_1.f90: In function 'p':
actual_array_constructor_1.f90:20:0: internal compiler error: Maximum number of
LRA constraint passes is achieved (15)

   end subroutine
 ^
0x95f97e lra_constraints(bool)
        /mnt/svn/gcc-trunk/gcc/lra-constraints.c:3284
0x94ec3c lra(_IO_FILE*)
        /mnt/svn/gcc-trunk/gcc/lra.c:2274
0x906456 do_reload
        /mnt/svn/gcc-trunk/gcc/ira.c:4624
0x906456 rest_of_handle_reload
        /mnt/svn/gcc-trunk/gcc/ira.c:4737
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