fortran: [PR102595]

PR fortran/102595

gcc/fortran/ChangeLog:

	* data.cc (gfc_assign_data_value): Remove check for PARAMETER in DATA.
	* primary.cc (match_variable): Add check for PARAMETER in DATA.

gcc/testsuite/ChangeLog:

	* gfortran.dg/pr88048.f90: Adjust for changed error message.
	* gfortran.dg/parameter_data0.f90: New test.

gcc/fortran/data.cc

@@ -244,13 +244,6 @@ gfc_assign_data_value (gfc_expr *lvalue, gfc_expr *rvalue, mpz_t index,
 		    "array-element nor a scalar-structure-component";
 
   symbol = lvalue->symtree->n.sym;
-  if (symbol->attr.flavor == FL_PARAMETER)
-    {
-      gfc_error ("PARAMETER %qs shall not appear in a DATA statement at %L",
-		 symbol->name, &lvalue->where);
-      return false;
-    }
-
   init = symbol->value;
   last_ts = &symbol->ts;
   last_con = NULL;

gcc/fortran/primary.cc

@@ -4076,8 +4076,14 @@ match_variable (gfc_expr **result, int equiv_flag, int host_flag)
 	  gfc_error ("Named constant at %C in an EQUIVALENCE");
 	  return MATCH_ERROR;
 	}
-      /* Otherwise this is checked for and an error given in the
-	 variable definition context checks.  */
+      if (gfc_in_match_data())
+	{
+	  gfc_error ("PARAMETER %qs shall not appear in a DATA statement at %C",
+		      sym->name);
+	  return MATCH_ERROR;
+	}
+	/* Otherwise this is checked for an error given in the
+	   variable definition context checks.  */
       break;
 
     case FL_PROCEDURE:

gcc/testsuite/gfortran.dg/parameter_data0.f90

@@ -0,0 +1,6 @@
+! { dg-do compile }
+! PR fortran/102595  Similar to 88048 with a zero sized array
+program p
+   complex, parameter:: x(0) = 2
+   data x%im /3.0/ ! { dg-error "shall not appear in a DATA statement" }
+end

gcc/testsuite/gfortran.dg/pr88048.f90

@@ -2,6 +2,6 @@
 ! PR fortran/88048
 program p
    integer, parameter :: a(2) = 1
-   data a(2) /a(1)/                 ! { dg-error "definable entity" }
+   data a(2) /a(1)/  ! { dg-error "shall not appear in a DATA statement" }
    print *, a
 end