[Committed] PR fortran/77351

[Committed] PR fortran/77351

[Steve Kargl]

I've committed the following patch.  tkoenig approved it
in bugzilla.

2016-08-25  Steven g. Kargl  <kargl@gcc.gnu.org>

	PR fortran/77351
	* frontend-passes.c (remove_trim,combine_array_constructor): Check for
	NULL pointer.

2016-08-25  Steven g. Kargl  <kargl@gcc.gnu.org>

	PR fortran/77351
	* gfortran.dg/pr77351.f90: New test.

Index: gcc/fortran/frontend-passes.c
===================================================================
--- gcc/fortran/frontend-passes.c	(revision 239762)
+++ gcc/fortran/frontend-passes.c	(working copy)
@@ -1137,6 +1137,8 @@ remove_trim (gfc_expr *rhs)
   bool ret;
 
   ret = false;
+  if (!rhs)
+    return ret;
 
   /* Check for a // b // trim(c).  Looping is probably not
      necessary because the parser usually generates
@@ -1274,6 +1276,9 @@ combine_array_constructor (gfc_expr *e)
   op1 = e->value.op.op1;
   op2 = e->value.op.op2;
 
+  if (!op1 || !op2)
+    return false;
+
   if (op1->expr_type == EXPR_ARRAY && op2->rank == 0)
     scalar_first = false;
   else if (op2->expr_type == EXPR_ARRAY && op1->rank == 0)
Index: gcc/testsuite/gfortran.dg/pr77351.f90
===================================================================
--- gcc/testsuite/gfortran.dg/pr77351.f90	(nonexistent)
+++ gcc/testsuite/gfortran.dg/pr77351.f90	(working copy)
@@ -0,0 +1,6 @@
+! { dg-do compile }
+program p
+   integer :: z(4) = [1, 2, 3, 4]
+   print *, any(shape(z) /= [4,1])  ! { dg-error "shape for elemental binary" }
+end
+! { dg-excess-errors "operands are incommensurate" }
-- 
Steve