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Date: Sun, 18 Jan 2009 21:21:00 -0000
Subject: [Bug fortran/38907]  New: ICE when contained function has same name as module function and used in expression
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From: "dick dot hendrickson at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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The following program gives an internal compiler error.  If the line
RDA = -1 is commented out, there is a different ICE.  If the unary +
before the function reference in the assignment to RDA(1,2) is removed
the ICE goes away.

Dick Hendrickson


      module sa0054_stuff

! fails on Windows XP
! gcc version 4.4.0 20081219 (experimental) [trunk revision 142842] (GCC)

      contains

      PURE FUNCTION S_REAL_SUM_I (A,B)
      REAL  ::  S_REAL_SUM_I
      REAL, INTENT(IN), OPTIONAL  ::  A,B
      X = 0
      S_REAL_SUM_I = X

      END FUNCTION S_REAL_SUM_I

      SUBROUTINE SA0054(RDA, NF10,nf1,nf2,nf3,nf4)
      REAL RDA(NF10,NF10)

      RDA    = -1                  !changes ICE if commented out

          RDA(1,2) = + S_REAL_SUM_I(1.0,2.0)

!         RDA(1,2) =   S_REAL_SUM_I(1.0,2.0)     !This one works

      CONTAINS

      PURE FUNCTION S_REAL_SUM_I (A,B)
      REAL  ::  S_REAL_SUM_I
      REAL, INTENT(IN), OPTIONAL  ::  A,B
      S_REAL_SUM_I = 0
      END FUNCTION S_REAL_SUM_I

      END SUBROUTINE

      end module sa0054_stuff


With RDA = -1
C:\gfortran>gfortran try_sa0054.f
f951.exe: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.


With RDA = -1 commented out
C:\gfortran>gfortran try_sa0054.f
f951.exe: internal compiler error: in check_host_association, at
fortran/resolve
.c:4369
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.


-- 
           Summary: ICE when contained function has same name as module
                    function and used in expression
           Product: gcc
           Version: 4.4.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: dick dot hendrickson at gmail dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38907