re PR fortran/86059 (ICE in reduce_binary_ac, at fortran/arith.c:1308 (and others))

2018-06-08  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/86059 
	* array.c (match_array_cons_element): NULL() cannot be in an
	array constructor.

2018-06-08  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/86059 
	* gfortran.dg/associate_30.f90: Remove code tested ...
	* gfortran.dg/pr67803.f90: Ditto.
	* gfortran.dg/pr67805.f90: Ditto.
	* gfortran.dg/pr86059.f90: ... here.  New test.

From-SVN: r261344

gcc/fortran/ChangeLog

 2018-06-08  Steven G. Kargl  <kargl@gcc.gnu.org>
 
+	PR fortran/86059 
+	* array.c (match_array_cons_element): NULL() cannot be in an
+	array constructor.
+
+2018-06-08  Steven G. Kargl  <kargl@gcc.gnu.org>
+
 	PR fortran/78571
 	* data.c (create_character_initializer): Return early if type is
 	incompatible with CHARACTER.

gcc/fortran/array.c

@@ -1098,6 +1098,15 @@ match_array_cons_element (gfc_constructor_base *result)
   if (m != MATCH_YES)
     return m;
 
+  if (expr->expr_type == EXPR_FUNCTION
+      && expr->ts.type == BT_UNKNOWN
+      && strcmp(expr->symtree->name, "null") == 0)
+   {
+      gfc_error ("NULL() at %C cannot appear in an array constructor");
+      gfc_free_expr (expr);
+      return MATCH_ERROR;
+   }
+
   gfc_constructor_append_expr (result, expr, &gfc_current_locus);
   return MATCH_YES;
 }

gcc/testsuite/ChangeLog

 2018-06-08  Steven G. Kargl  <kargl@gcc.gnu.org>
 
+	PR fortran/86059 
+	* gfortran.dg/associate_30.f90: Remove code tested ...
+	* gfortran.dg/pr67803.f90: Ditto.
+	* gfortran.dg/pr67805.f90: Ditto.
+	* gfortran.dg/pr86059.f90: ... here.  New test.
+
+2018-06-08  Steven G. Kargl  <kargl@gcc.gnu.org>
+
 	PR fortran/78571
 	* gfortran.dg/pr78571.f90: New test.
 

gcc/testsuite/gfortran.dg/associate_30.f90

@@ -8,8 +8,3 @@
       associate (x => null())   ! { dg-error "cannot be NULL()" }
       end associate
    end subroutine
-
-   subroutine s2
-      associate (x => [null()]) ! { dg-error "has no type" }
-      end associate
-   end subroutine

gcc/testsuite/gfortran.dg/pr67803.f90

@@ -10,5 +10,4 @@ program p
   x = '0' // [character :: 1d1]     ! { dg-error "Incompatible typespec for" }
   x = '0' // [character :: (0.,1.)] ! { dg-error "Incompatible typespec for" }
   x = '0' // [character :: .true.]  ! { dg-error "Incompatible typespec for" }
-  x = '0' // [character :: null()]  ! { dg-error "Incompatible typespec for" }
 end

gcc/testsuite/gfortran.dg/pr67805.f90

@@ -22,7 +22,6 @@ subroutine p
    s = [character([1.]) :: 'x', 'y']      ! { dg-error "INTEGER expression expected" }
    s = [character([1d1]) :: 'x', 'y']     ! { dg-error "INTEGER expression expected" }
    s = [character([(0.,1.)]) :: 'x', 'y'] ! { dg-error "INTEGER expression expected" }
-   s = [character([null()]) :: 'x', 'y']  ! { dg-error "INTEGER expression expected" }
    s =  [character(null()) :: 'x', 'y']   ! { dg-error "INTEGER expression expected" }
    call foo(s)
 end subroutine p

gcc/testsuite/gfortran.dg/pr86059.f90

+! { dg-do compile }
+! PR fortran/86059
+program foo
+   integer :: i(2) = [ null(), 1 ]           ! { dg-error "cannot appear in an array constructor" }
+   integer :: j(2) = [ (null(), n = 1, 2) ]  ! { dg-error "cannot appear in an array constructor" }
+   integer k(2)
+   k = 42 + [1, null()]                      ! { dg-error "cannot appear in an array constructor" }
+end program foo