[C++ Patch] One more cp_expr_loc_or_input_loc

[Paolo Carlini]

Hi,

just spotted an additional error which can benefit from 
cp_expr_loc_or_input_loc. Tested x86_64-linux.

Thanks, Paolo.

////////////////////

/cp
2019-08-05  Paolo Carlini  <paolo.carl...@oracle.com>

        * decl.c (check_array_designated_initializer): Use
        cp_expr_loc_or_input_loc in one place.

/testsuite
2019-08-05  Paolo Carlini  <paolo.carl...@oracle.com>

        * g++.dg/cpp0x/desig1.C: Check location too.
Index: cp/decl.c
===================================================================
--- cp/decl.c   (revision 274124)
+++ cp/decl.c   (working copy)
@@ -5520,8 +5520,9 @@ check_array_designated_initializer (constructor_el
            sorry ("non-trivial designated initializers not supported");
        }
       else
-       error ("C99 designator %qE is not an integral constant-expression",
-              ce->index);
+       error_at (cp_expr_loc_or_input_loc (ce->index),
+                 "C99 designator %qE is not an integral constant-expression",
+                 ce->index);
 
       return false;
     }
Index: testsuite/g++.dg/cpp0x/desig1.C
===================================================================
--- testsuite/g++.dg/cpp0x/desig1.C     (revision 274123)
+++ testsuite/g++.dg/cpp0x/desig1.C     (working copy)
@@ -25,5 +25,5 @@ struct C
   constexpr operator SE() const { return SE::se0; }
 };
 
-int c[] = { [C()] = 0 }; // { dg-error "integral constant-expression" }
+int c[] = { [C()] = 0 }; // { dg-error "14:C99 designator .C\\\(\\\). is not 
an integral constant-expression" }
                         // { dg-warning "does not allow C99 designated 
initializers" "" { target *-*-* } .-1 }