Do not reset loc_directive_seen in dwarf2_emit_insn

[Nick Clifton]

Hi Guys,

  I am applying the patch below (mainline only) to fix a further
  problem with dwarf2_emit_insn().  The code used to reset the
  variable 'loc_directive_seen' which means that the bug detected and
  fixed by Bruno Haible could in theory resurface.

  Since a .loc directive remains valid up until the next .loc
  directive, there is no need to reset the variable, so this patch
  just eliminates that reset.

Cheers
        Nick


2002-05-13  Nick Clifton  <nickc@cambridge.redhat.com>

	* dwarf2dbg.c (dwarf2_emit_insn): Do not reset
	loc_directive_seen.

Index: gas/dwarf2dbg.c
===================================================================
RCS file: /cvs/src/src/gas/dwarf2dbg.c,v
retrieving revision 1.47
diff -c -3 -p -w -r1.47 dwarf2dbg.c
*** gas/dwarf2dbg.c	11 May 2002 10:32:35 -0000	1.47
--- gas/dwarf2dbg.c	13 May 2002 10:19:29 -0000
*************** dwarf2_emit_insn (size)
*** 286,301 ****
  {
    struct dwarf2_line_info loc;
  
!   if (debug_type != DEBUG_DWARF2 && ! loc_directive_seen)
!     return;
!   loc_directive_seen = false;
! 
    /* Use the last location established by a .loc directive, not
       the value returned by dwarf2_where().  That calls as_where()
       which will return either the logical input file name (foo.c)
       or the physical input file name (foo.s) and not the file name
       specified in the most recent .loc directive (eg foo.h).  */
    loc = current;
    dwarf2_gen_line_info (frag_now_fix () - size, &loc);
  }
  
--- 286,303 ----
  {
    struct dwarf2_line_info loc;
  
!   if (loc_directive_seen)
      /* Use the last location established by a .loc directive, not
         the value returned by dwarf2_where().  That calls as_where()
         which will return either the logical input file name (foo.c)
         or the physical input file name (foo.s) and not the file name
         specified in the most recent .loc directive (eg foo.h).  */
      loc = current;
+   else if (debug_type != DEBUG_DWARF2)
+     return;
+   else
+     dwarf2_where (& loc);
+ 
    dwarf2_gen_line_info (frag_now_fix () - size, &loc);
  }