[Bug fortran/51904] New: Internal Compiler Error on size function evaluation

[david.sagan at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51904

             Bug #: 51904
           Summary: Internal Compiler Error on size function evaluation
    Classification: Unclassified
           Product: gcc
           Version: 4.6.3
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: david.sagan@gmail.com


The following program produces an "internal compiler error" in 4.6.3. gcc 4.5
does not show the bug:

subroutine qp_draw_polyline_basic (x)
  implicit none
  real :: x(:), f
  f = 0
  print *, size(f*x)
end subroutine

Result:

mc66:~/Bmad/bmad_dist/bug> uname -a
Darwin mc66.lns.cornell.edu 10.8.0 Darwin Kernel Version 10.8.0: Tue Jun  7
16:33:36 PDT 2011; root:xnu-1504.15.3~1/RELEASE_I386 i386

mc66:~/Bmad/bmad_dist/bug> gfortran --version
GNU Fortran (GCC) 4.6.2

mc66:~/Bmad/bmad_dist/bug> gfortran -c bug.f90
f951: internal compiler error: Segmentation fault

Of course the workaround is easy: Just replace "size(f*x)" with "size(x)".