[Patch, Fortran] PR 49265 - allow :: for "procedure :: list"

[Patch, Fortran] PR 49265 - allow :: for "procedure :: list"

[Tobias Burnus]

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Fortran 2008 now also allows the "::" in module interfaces: "[module] 
procedure [::] procedure-name-list"

The bug is also a sign for bad quality assurance as we previously only 
fixed the issue for "module procedure" and not also for "procedure".

Build and regtested on x86-64-linux.
OK for the trunk?

Tobias

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2012-07-17  Tobias Burnus  <burnus@net-b.de>
	    Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/49265
	* decl.c (match_procedure_in_interface): Support "::" for
	Fortran 2008 and later.

2012-07-17  Tobias Burnus  <burnus@net-b.de>

	PR fortran/49265
	* gfortran.dg/module_procedure_double_colon_3.f90: New.
	* gfortran.dg/module_procedure_double_colon_4.f90: New.

diff --git a/gcc/fortran/decl.c b/gcc/fortran/decl.c
index c3644b6..c6ba43e 100644
--- a/gcc/fortran/decl.c
+++ b/gcc/fortran/decl.c
@@ -5108,6 +5113,7 @@ match_procedure_in_interface (void)
   match m;
   gfc_symbol *sym;
   char name[GFC_MAX_SYMBOL_LEN + 1];
+  locus old_locus;
 
   if (current_interface.type == INTERFACE_NAMELESS
       || current_interface.type == INTERFACE_ABSTRACT)
@@ -5116,6 +5122,19 @@ match_procedure_in_interface (void)
       return MATCH_ERROR;
     }
 
+  /* Check if the F2008 optional double colon appears.  */
+  gfc_gobble_whitespace ();
+  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(;;)
     {
       m = gfc_match_name (name);
--- /dev/null	2012-07-17 07:28:04.995717470 +0200
+++ gcc/gcc/testsuite/gfortran.dg/module_procedure_double_colon_3.f90	2012-07-17 09:02:29.000000000 +0200
@@ -0,0 +1,16 @@
+! { dg-do compile }
+! { dg-options "-std=f2003" }
+!
+! PR fortran/49265
+!
+! Contributed by Erik Toussaint
+!
+module m1
+  implicit none
+  interface foo
+     procedure :: bar ! { dg-error "Fortran 2008: double colon in MODULE PROCEDURE statement" }
+  end interface
+contains
+  subroutine bar
+  end subroutine
+end module
--- /dev/null	2012-07-17 07:28:04.995717470 +0200
+++ gcc/gcc/testsuite/gfortran.dg/module_procedure_double_colon_4.f90	2012-07-17 09:07:04.000000000 +0200
@@ -0,0 +1,16 @@
+! { dg-do compile }
+! { dg-options "-std=f2008" }
+!
+! PR fortran/49265
+!
+! Contributed by Erik Toussaint
+!
+module m1
+  implicit none
+  interface foo
+     procedure :: bar ! "::" is valid since Fortran 2008
+  end interface
+contains
+  subroutine bar
+  end subroutine
+end module

Re: [Patch, Fortran] PR 49265 - allow :: for "procedure :: list"

[Janus Weil]

Hi Tobias,

> Fortran 2008 now also allows the "::" in module interfaces: "[module]
> procedure [::] procedure-name-list"
>
> The bug is also a sign for bad quality assurance as we previously only fixed
> the issue for "module procedure" and not also for "procedure".
>
> Build and regtested on x86-64-linux.
> OK for the trunk?

certainly ok. Thanks for the fix!

Cheers,
Janus