[Bug lto/59723] New: [4.9 Regression] ICE: in lto_output_tree, at lto-streamer-out.c:1390 when compiling some Fortran tests with -flto

[dominiq at lps dot ens.fr]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59723

            Bug ID: 59723
           Summary: [4.9 Regression] ICE: in lto_output_tree, at
                    lto-streamer-out.c:1390 when compiling some Fortran
                    tests with -flto
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: lto
          Assignee: unassigned at gcc dot gnu.org
          Reporter: dominiq at lps dot ens.fr
                CC: hubicka at gcc dot gnu.org, rguenth at gcc dot gnu.org

When compiling some Fortran tests with -flto one gets the following ICE:


[Book15] f90/bug% /opt/gcc/gcc4.9a-205798/bin/gfortran -flto
/opt/gcc/work/gcc/testsuite/gfortran.dg/namelist_64.f90
/opt/gcc/work/gcc/testsuite/gfortran.dg/namelist_64.f90: In function 'MAIN__':
/opt/gcc/work/gcc/testsuite/gfortran.dg/namelist_64.f90:27:0: internal compiler
error: in lto_output_tree, at lto-streamer-out.c:1390
 end program
 ^

/opt/gcc/work/gcc/testsuite/gfortran.dg/namelist_64.f90:27:0: internal compiler
error: Abort trap: 6
gfortran: internal compiler error: Abort trap: 6 (program f951)
Abort

r205305 (2013-11-23) compiles the tests, r205798 (2013-12-09) gives the ICE.