Hi,
there must be some funny screw-up in the parser that shows up
under very special circumstances. Compile the example below
with debugging. There must *not* be any lines before the
"subroutine" in that file, otherwise the ICE does not show up.
% gfortran -c -g gfc-dbg-bug.f90
gfc-dbg-bug.f90: In function 'gfc_debug_bug':
gfc-dbg-bug.f90:-2: internal compiler error: in final_scan_insn, at final.c:1843
Here's the code:
subroutine gfc_debug_bug (n,m,k,ax,bx,c)
implicit none
integer :: n, m
integer :: k(n+m)
real :: ax(:), bx(n), c(n+m)
integer :: i
real :: f
i = k(n)
f = c(n)
f = bx(n)
f = ax(n)
end subroutine gfc_debug_bug
!
! Compile the above as follows:
! % gfortran -c -g gfc-dbg-bug.f90
! gfc-dbg-bug.f90: In function 'gfc_debug_bug':
! gfc-dbg-bug.f90:-2: internal compiler error: in final_scan_insn, at
final.c:1843
!
! Adding a line (even an empty one) before "subroutine" resolves the bug...
Cheers,
-ha
--
Summary: gfortran: ICE in final_scan_insn, at final.c:1843
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: fortran
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: anlauf at hep dot tu-darmstadt dot de
CC: gcc-bugs at gcc dot gnu dot org
GCC host triplet: i686-pc-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19195
