Re: c++/6381: [PATCH] Missing assembler label

[Jason Merrill <jason@redhat.com>]

The following reply was made to PR c++/6381; it has been noted by GNATS.

From: Jason Merrill <jason@redhat.com>
To: gcc-patches@gcc.gnu.org
Cc: gcc-gnats@gcc.gnu.org
Subject: Re: c++/6381: [PATCH] Missing assembler label
Date: Tue, 07 May 2002 16:14:22 +0100

 --=-=-=
 
 6381 is a regression whereby compiling with -g -O causes us to end up with
 an undefined reference to a static local variable because we wrote out the
 initializer for another variable in dwarf2out.  The simple fix is to
 disable the problematic code; it means that the debug info will be somewhat
 less useful for unexpanded constants, but is safe.
 
 Mark, can this go onto the branch?  I'll work on a better fix for the trunk.
 
 2002-05-07  Jason Merrill  <jason@redhat.com>
 
 	* dwarf2out.c (rtl_for_decl_location): Don't try to extract a
 	constant value from DECL_INITIAL.
 
 
 --=-=-=
 Content-Type: text/x-patch
 Content-Disposition: inline
 
 *** dwarf2out.c.~1~	Sun May  5 22:06:08 2002
 --- dwarf2out.c	Tue May  7 16:08:53 2002
 *************** rtl_for_decl_location (decl)
 *** 8942,8947 ****
 --- 8946,8955 ----
   	    rtl = gen_rtx_CONST_STRING (VOIDmode, TREE_STRING_POINTER (init));
   	}
   
 + #if 0
 +       /* We mustn't actually emit anything here, as we might not get a
 +          chance to emit any symbols we refer to.  For the release, don't
 +          try to get this right.  */
         if (rtl == NULL)
   	{
   	  rtl = expand_expr (DECL_INITIAL (decl), NULL_RTX, VOIDmode,
 *************** rtl_for_decl_location (decl)
 *** 8951,8956 ****
 --- 8959,8965 ----
   	  if (rtl && GET_CODE (rtl) == MEM)
   	    rtl = NULL;
   	}
 + #endif
       }
   
   #ifdef ASM_SIMPLIFY_DWARF_ADDR
 
 --=-=-=--