re PR fortran/44036 (I can't declare an external function in an OMP shared statement.)

	PR fortran/44036
	* openmp.c (resolve_omp_clauses): Allow procedure pointers in clause
	variable lists.
	* trans-openmp.c (gfc_omp_privatize_by_reference): Don't privatize
	by reference dummy procedures or non-dummy procedure pointers.
	(gfc_omp_predetermined_sharing): Return
	OMP_CLAUSE_DEFAULT_FIRSTPRIVATE for dummy procedures.

	* gfortran.dg/gomp/pr44036-1.f90: New test.
	* gfortran.dg/gomp/pr44036-2.f90: New test.
	* gfortran.dg/gomp/pr44036-3.f90: New test.

From-SVN: r159361

gcc/fortran/ChangeLog

+2010-05-13  Jakub Jelinek  <jakub@redhat.com>
+
+	PR fortran/44036
+	* openmp.c (resolve_omp_clauses): Allow procedure pointers in clause
+	variable lists.
+	* trans-openmp.c (gfc_omp_privatize_by_reference): Don't privatize
+	by reference dummy procedures or non-dummy procedure pointers.
+	(gfc_omp_predetermined_sharing): Return
+	OMP_CLAUSE_DEFAULT_FIRSTPRIVATE for dummy procedures.
+
 2010-05-11  Daniel Franke  <franke.daniel@gmail.com>
 
         PR fortran/43711

gcc/fortran/openmp.c

@@ -837,6 +837,8 @@ resolve_omp_clauses (gfc_code *code)
 		if (el)
 		  continue;
 	      }
+	    if (n->sym->attr.proc_pointer)
+	      continue;
 	  }
 	gfc_error ("Object '%s' is not a variable at %L", n->sym->name,
 		   &code->loc);

gcc/fortran/trans-openmp.c

 /* OpenMP directive translation -- generate GCC trees from gfc_code.
-   Copyright (C) 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
+   Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010
+   Free Software Foundation, Inc.
    Contributed by Jakub Jelinek <jakub@redhat.com>
 
 This file is part of GCC.
@@ -57,7 +58,8 @@ gfc_omp_privatize_by_reference (const_tree decl)
       if (GFC_POINTER_TYPE_P (type))
 	return false;
 
-      if (!DECL_ARTIFICIAL (decl))
+      if (!DECL_ARTIFICIAL (decl)
+	  && TREE_CODE (TREE_TYPE (type)) != FUNCTION_TYPE)
 	return true;
 
       /* Some arrays are expanded as DECL_ARTIFICIAL pointers
@@ -96,6 +98,15 @@ gfc_omp_predetermined_sharing (tree decl)
 	 == NULL)
     return OMP_CLAUSE_DEFAULT_SHARED;
 
+  /* Dummy procedures aren't considered variables by OpenMP, thus are
+     disallowed in OpenMP clauses.  They are represented as PARM_DECLs
+     in the middle-end, so return OMP_CLAUSE_DEFAULT_FIRSTPRIVATE here
+     to avoid complaining about their uses with default(none).  */
+  if (TREE_CODE (decl) == PARM_DECL
+      && TREE_CODE (TREE_TYPE (decl)) == POINTER_TYPE
+      && TREE_CODE (TREE_TYPE (TREE_TYPE (decl))) == FUNCTION_TYPE)
+    return OMP_CLAUSE_DEFAULT_FIRSTPRIVATE;
+
   /* COMMON and EQUIVALENCE decls are shared.  They
      are only referenced through DECL_VALUE_EXPR of the variables
      contained in them.  If those are privatized, they will not be

gcc/testsuite/ChangeLog

 2010-05-13  Jakub Jelinek  <jakub@redhat.com>
 
+	PR fortran/44036
+	* gfortran.dg/gomp/pr44036-1.f90: New test.
+	* gfortran.dg/gomp/pr44036-2.f90: New test.
+	* gfortran.dg/gomp/pr44036-3.f90: New test.
+
 	PR debug/43983
 	* gcc.dg/guality/sra-1.c: New test.
 

gcc/testsuite/gfortran.dg/gomp/pr44036-1.f90

+! PR fortran/44036
+! { dg-do compile }
+! { dg-options "-fopenmp" }
+subroutine foo(a, b)
+  integer, external :: a
+  integer, external, pointer :: b
+  integer, external :: c
+  integer, external, pointer :: d
+  integer :: x
+  x = 6
+!$omp parallel default(none) private (x)
+  x = a(4)
+!$omp end parallel
+!$omp parallel default(none) private (x)	! { dg-error "enclosing parallel" }
+  x = b(5)					! { dg-error "not specified in" "" { target *-*-* } 11 }
+!$omp end parallel
+!$omp parallel default(none) private (x)
+  x = c(6)
+!$omp end parallel
+  d => a
+!$omp parallel default(none) private (x)	! { dg-error "enclosing parallel" }
+  x = d(7)					! { dg-error "not specified in" }
+!$omp end parallel
+end

gcc/testsuite/gfortran.dg/gomp/pr44036-2.f90

+! PR fortran/44036
+! { dg-do compile }
+! { dg-options "-fopenmp" }
+subroutine foo(a, b)
+  integer, external :: a
+  integer, external, pointer :: b
+  integer, external :: c
+  integer, external, pointer :: d
+  integer :: x
+  d => a
+!$omp parallel default(none) private (x) firstprivate (b, d)
+  x = a(4)
+  x = b(5)
+  x = c(6)
+  x = d(7)
+!$omp end parallel
+end

gcc/testsuite/gfortran.dg/gomp/pr44036-3.f90

+! PR fortran/44036
+! { dg-do compile }
+! { dg-options "-fopenmp" }
+subroutine foo(a)
+  integer, external :: a, c
+  integer :: x
+!$omp parallel default(none) private (x) shared (a)	! { dg-error "is not a variable" }
+  x = a(6)
+!$omp end parallel
+!$omp parallel default(none) private (x) shared (c)	! { dg-error "is not a variable" }
+  x = c(6)
+!$omp end parallel
+end