[PATCH] PR fortran/49265 -- allow for double colon in module procedure statement

[Steve Kargl]

The attached patch allows for F2008's optional double
colon in a module procedure statement.  Built and
regression tested on trunk.  OK for trunk and 4.6?


Steven G. Kargl  <ka...@gcc.gnu.org>

       PR fortran/49265
       * decl.c (gfc_match_modproc):  Allow for a double colon in a module
       procedure statement.


2011-06-02  Steven G. Kargl  <ka...@gcc.gnu.org>

       PR fortran/49265
       * gfortran.dg/module_procedure_double_colon.f90:  New test.


-- 
Steve

Index: gcc/fortran/ChangeLog
===================================================================
--- gcc/fortran/ChangeLog	(revision 174566)
+++ gcc/fortran/ChangeLog	(working copy)
@@ -1,3 +1,9 @@
+2011-06-02  Steven G. Kargl  <ka...@gcc.gnu.org>
+
+	PR fortran/49265
+	* decl.c (gfc_match_modproc):  Allow for a double colon in a module
+	procedure statement.
+ 
 2011-05-31  Tobias Burnus  <bur...@net-b.de>
 
 	PR fortran/18918
Index: gcc/fortran/decl.c
===================================================================
--- gcc/fortran/decl.c	(revision 174566)
+++ gcc/fortran/decl.c	(working copy)
@@ -7016,6 +7016,7 @@ gfc_match_modproc (void)
   char name[GFC_MAX_SYMBOL_LEN + 1];
   gfc_symbol *sym;
   match m;
+  locus old_locus;
   gfc_namespace *module_ns;
   gfc_interface *old_interface_head, *interface;
 
@@ -7044,10 +7045,22 @@ gfc_match_modproc (void)
      end up with a syntax error and need to recover.  */
   old_interface_head = gfc_current_interface_head ();
 
+  /* Check if the F2008 optional double colon appears.  */
+  old_locus = gfc_current_locus;
+  if (gfc_match (" :: ") == MATCH_YES)
+    {
+      if (gfc_notify_std (GFC_STD_F2008, "Fortran 2008: double colon in "
+			 "MODULE PROCEDURE statement at %L", &old_locus)
+	  == FAILURE)
+	return MATCH_ERROR;
+    }
+  else
+    gfc_current_locus = old_locus;
+      
   for (;;)
     {
-      locus old_locus = gfc_current_locus;
       bool last = false;
+      old_locus = gfc_current_locus;
 
       m = gfc_match_name (name);
       if (m == MATCH_NO)
@@ -7059,6 +7072,7 @@ gfc_match_modproc (void)
 	 current namespace.  */
       if (gfc_match_eos () == MATCH_YES)
 	last = true;
+
       if (!last && gfc_match_char (',') != MATCH_YES)
 	goto syntax;
 
Index: gcc/testsuite/ChangeLog
===================================================================
--- gcc/testsuite/ChangeLog	(revision 174566)
+++ gcc/testsuite/ChangeLog	(working copy)
@@ -1,3 +1,8 @@
+2011-06-02  Steven G. Kargl  <ka...@gcc.gnu.org>
+
+	PR fortran/49265
+	* gfortran.dg/module_procedure_double_colon.f90:  New test.
+
 2011-06-02  Eric Botcazou  <ebotca...@adacore.com>
 	    Hans-Peter Nilsson  <h...@axis.com>
 
Index: gcc/testsuite/gfortran.dg/module_procedure_double_colon.f90
===================================================================
--- gcc/testsuite/gfortran.dg/module_procedure_double_colon.f90	(revision 0)
+++ gcc/testsuite/gfortran.dg/module_procedure_double_colon.f90	(revision 0)
@@ -0,0 +1,16 @@
+! { dg-do compile }
+! { dg-options "-std=f95" }
+!
+! PR fortran/49265
+! Contributed by Erik Toussaint
+!
+module m1
+   implicit none
+   interface foo
+      module procedure :: bar ! { dg-error "double colon" }
+   end interface
+contains
+   subroutine bar
+   end subroutine
+end module
+! { dg-final { cleanup-modules "m1" } }