[Bug fortran/21203] New: Segfault while compiling libgfortran/intrinsics/selected_int_kind.f90

["corsepiu at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

During bootstrapping gcc-4.0.0 (release) with f95 enabled, this segfault occurs:

#/users/rtems/src/rpms/BUILD/rtems-4.7-h8300-rtems4.7-gcc-newlib-gcc4.0.0newlib1.13.0/build/gcc/gfortran
-B/users/rtems/src/rpms/BUILD/rtems-4.7-h8300-rtems4.7-gcc-newlib-gcc4.0.0newlib1.13.0/build/gcc/
-nostdinc
-B/users/rtems/src/rpms/BUILD/rtems-4.7-h8300-rtems4.7-gcc-newlib-gcc4.0.0newlib1.13.0/build/h8300-rtems4.7/newlib/
-isystem
/users/rtems/src/rpms/BUILD/rtems-4.7-h8300-rtems4.7-gcc-newlib-gcc4.0.0newlib1.13.0/build/h8300-rtems4.7/newlib/targ-include
-isystem
/users/rtems/src/rpms/BUILD/rtems-4.7-h8300-rtems4.7-gcc-newlib-gcc4.0.0newlib1.13.0/gcc-4.0.0/newlib/libc/include
-B/opt/rtems-4.7/h8300-rtems4.7/bin/ -B/opt/rtems-4.7/h8300-rtems4.7/lib/
-isystem /opt/rtems-4.7/h8300-rtems4.7/include -isystem
/opt/rtems-4.7/h8300-rtems4.7/sys-include -Wall -fno-repack-arrays
-fno-underscoring -c
../../../gcc-4.0.0/libgfortran/intrinsics/selected_int_kind.f90 -o
selected_int_kind.o
<built-in>:0: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.
make[1]: *** [selected_int_kind.lo] Error 1


gdb reveils this to be cause:

Program received signal SIGSEGV, Segmentation fault.
show_locus (offset=0, loc=0x833a17c) at ../../gcc-4.0.0/gcc/fortran/error.c:136

 135   lb = loc->lb;
 136   f = lb->file;

With
(gdb) print *loc
$10 = {nextc = 0x0, lb = 0x0}

I.e. a NULL pointer dereference in error.c:136

-- 
           Summary: Segfault while compiling
                    libgfortran/intrinsics/selected_int_kind.f90
           Product: gcc
           Version: 4.0.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: fortran
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: corsepiu at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org
GCC target triplet: h8300-rtems4.7


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21203