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[Bug tree-optimization/51058] [4.7 Regression] ICE: gimple check: expected gimple_assign(error_mark), have gimple_call() in gimple_assign_rhs_code, at gimple.h:1992


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51058

--- Comment #8 from Dominique d'Humieres <dominiq at lps dot ens.fr> 2011-11-10 14:22:48 UTC ---
Revision 181251 fixes the ICEs for the codes in comment #0 and #1 (thanks).
However at revision 181255 compiling the original mdbx.f90, the extracted
subroutine, or the reduced test

!*==MLIST.spg  processed by SPAG 6.55Dc at 09:26 on 23 Sep 2005
      SUBROUTINE MLIST(Lmethd)
      IMPLICIT DOUBLE PRECISION(A-H,O-Z)
      PARAMETER (NM=16384)
      COMMON /COUNT / NFI , LCOunt , LISter , KNTsta , KNTgor , LEP ,   &
     &                MANyon
      COMMON /LCS   / X0(3,-2:NM) , X(3,-2:NM,5) , XIN(3,-2:NM)
         DO i = 1 , MOLsp
            boxjmp = PBCx*INT(X0(1,i)+SIGN(HALf,X0(1,i)))
            X0(1,i) = X0(1,i) - boxjmp
            XIN(1,i) = XIN(1,i) - boxjmp
            boxjmp = PBCy*INT(X0(2,i)+SIGN(HALf,X0(2,i)))
            X0(2,i) = X0(2,i) - boxjmp
            XIN(2,i) = XIN(2,i) - boxjmp
            boxjmp = PBCz*INT(X0(3,i)+SIGN(HALf,X0(3,i)))
            X0(3,i) = X0(3,i) - boxjmp
            XIN(3,i) = XIN(3,i) - boxjmp
         ENDDO
      END

fails with

mlist_red_1.f90: In function 'mlist':
mlist_red_1.f90:2:0: internal compiler error: Segmentation fault

The segmentation fault goes away when compiling under gdb.


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