[Committed] PR fortran/69499 -- SELECT TYPE is executable statement

[Committed] PR fortran/69499 -- SELECT TYPE is executable statement

[Steve Kargl]

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I have committed the attach patch.  It checks that
a SELECT TYPE construct does not appear in MODULE
or SUBMODULE scope as it is an executable statement.


2019-06-19  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/69499
	* match.c (gfc_match_select_type):  SELECT TYPE is an executable 
	statement, and cannot appear in MODULE or SUBMODULE scope.

2019-06-19  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/69499
	* gfortran.dg/pr69499.f90: New test.
	* gfortran.dg/module_error_1.f90: Update dg-error string.

-- 
Steve

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Index: gcc/fortran/match.c
===================================================================
--- gcc/fortran/match.c	(revision 272480)
+++ gcc/fortran/match.c	(working copy)
@@ -6219,6 +6219,13 @@ gfc_match_select_type (void)
   if (m != MATCH_YES)
     return m;
 
+  if (gfc_current_state() == COMP_MODULE
+      || gfc_current_state() == COMP_SUBMODULE)
+    {
+      gfc_error ("SELECT TYPE at %C cannot appear in this scope");
+      return MATCH_ERROR;
+    }
+
   gfc_current_ns = gfc_build_block_ns (ns);
   m = gfc_match (" %n => %e", name, &expr2);
   if (m == MATCH_YES)
Index: gcc/testsuite/gfortran.dg/pr69499.f90
===================================================================
--- gcc/testsuite/gfortran.dg/pr69499.f90	(nonexistent)
+++ gcc/testsuite/gfortran.dg/pr69499.f90	(working copy)
@@ -0,0 +1,7 @@
+! { dg-do compile }
+! PR fortran/69499
+! Contributed by Gerhard Steinmetz.
+module m
+   class(*) :: z        ! { dg-error "must be dummy, allocatable or pointer" }
+   select type (x => z) ! { dg-error "cannot appear in this scope" }
+end
Index: gcc/testsuite/gfortran.dg/module_error_1.f90
===================================================================
--- gcc/testsuite/gfortran.dg/module_error_1.f90	(revision 272480)
+++ gcc/testsuite/gfortran.dg/module_error_1.f90	(working copy)
@@ -1,5 +1,5 @@
 ! { dg-do compile }
 ! PR fortran/50627
 module kernels
-      select type (args) ! { dg-error "Unexpected SELECT TYPE" }
+      select type (args) ! { dg-error "cannot appear in this scope" }
 end module kernels