Hello world,

using the combined superpowers of Captain Obvious and Lieutenant Simple,
I have committed the attached patch, which fixes a regression, as
r266251, after regression-testing. I will backport to 8 and 7 in the
next few days.

Regards

        Thomas

2018-11-18  Thomas Koenig  <tkoe...@gcc.gnu.org>

        PR fortran/88073
        * frontend-passes.c (combine_array_constructor): Do not do
        anything if in a WHERE statement.

2018-11-18  Thomas Koenig  <tkoe...@gcc.gnu.org>

        PR fortran/88073
        * gfortran.dg/where_7.f90: New test.
Index: frontend-passes.c
===================================================================
--- frontend-passes.c	(Revision 266250)
+++ frontend-passes.c	(Arbeitskopie)
@@ -1773,6 +1773,10 @@ combine_array_constructor (gfc_expr *e)
   if (iterator_level > 0)
     return false;
 
+  /* WHERE also doesn't work.  */
+  if (in_where > 0)
+    return false;
+
   op1 = e->value.op.op1;
   op2 = e->value.op.op2;
 
! { dg-do compile }
! { dg-options "-ffrontend-optimize" }
! PR fortran/88073 - this used to ICE with front-end optimization
! Original test case by 'mecej4'
Subroutine tfu (n, x, f)
   Implicit None
   Integer, Parameter :: double = Kind (0.d0)
   Integer, Intent (In) :: n
   Real (double), Intent (Out) :: f
   Real (double), Intent (In) :: x (n)
   Integer :: j
   Logical, Dimension(n) :: l1v, l2v, l3v
!
   l3v = .False.
   l2v = .False.
   l1v = (/ (j, j=1, n) /) == 1
   Where ( .Not. (l1v))
      l2v = (/ (j, j=1, n) /) == n
   End Where
   Where ( .Not. l1v)
      l3v = .Not. l2v
   End Where
   f = sum (x(1:n), mask=l3v)
   Return
end subroutine tfu

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