C++ PATCH: Don't accept `asm' on fields

[Mark Mitchell]

The C++ front-end crashed when confronted with:

  struct S {
    int i asm ("abc");
  };

This construct doesn't really make sense; the C front-end doesn't
accept `asm' specifiers for fields, and there's no reason the C++
front-end should try to either.

This patch causes us to an emit a sensible error message.

Tested on i686-pc-linux-gnu.

--
Mark Mitchell                   mark@codesourcery.com
CodeSourcery, LLC               http://www.codesourcery.com

2001-01-07  Mark Mitchell  <mark@codesourcery.com>

	* decl2.c (grokfield): Don't accept `asm' specifiers for
	non-static data members.

Index: testsuite/g++.old-deja/g++.other/asm1.C
===================================================================
RCS file: asm1.C
diff -N asm1.C
*** /dev/null	Tue May  5 13:32:27 1998
--- asm1.C	Sun Jan  7 17:46:45 2001
***************
*** 0 ****
--- 1,6 ----
+ // Build don't link:
+ // Origin: Mark Mitchell <mark@codesourcery.com>
+ 
+ struct S {
+   int i asm ("abc"); // ERROR - `asm' specifier not permitted 
+ };
Index: cp/decl2.c
===================================================================
RCS file: /cvs/gcc/egcs/gcc/cp/decl2.c,v
retrieving revision 1.421
diff -c -p -r1.421 decl2.c
*** decl2.c	2001/01/07 15:17:07	1.421
--- decl2.c	2001/01/08 01:46:44
*************** grokfield (declarator, declspecs, init, 
*** 1794,1808 ****
    if (TREE_CODE (value) == FIELD_DECL)
      {
        if (asmspec)
! 	{
! 	  /* This must override the asm specifier which was placed
! 	     by grokclassfn.  Lay this out fresh.  */
! 	  DECL_RTL (value) = NULL_RTX;
! 	  DECL_ASSEMBLER_NAME (value) = get_identifier (asmspec);
! 	}
        if (DECL_INITIAL (value) == error_mark_node)
  	init = error_mark_node;
!       cp_finish_decl (value, init, asmspec_tree, flags);
        DECL_INITIAL (value) = init;
        DECL_IN_AGGR_P (value) = 1;
        return value;
--- 1794,1803 ----
    if (TREE_CODE (value) == FIELD_DECL)
      {
        if (asmspec)
! 	cp_error ("`asm' specifiers are not permitted on non-static data members");
        if (DECL_INITIAL (value) == error_mark_node)
  	init = error_mark_node;
!       cp_finish_decl (value, init, NULL_TREE, flags);
        DECL_INITIAL (value) = init;
        DECL_IN_AGGR_P (value) = 1;
        return value;