[Bug bootstrap/46037] --enable-stage1-languages=c,lto --enable-languages=c,lto --with-build-config=bootstrap-lto fails on darwin

[howarth at nitro dot med.uc.edu]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46037

--- Comment #19 from Jack Howarth <howarth at nitro dot med.uc.edu> 2011-01-11 
16:32:00 UTC ---
Why not retain the original code behavior unless generating lto? The patch
below works with both a standard and lto-bootstrap on x86_64-apple-darwin10.

Index: gcc/config/darwin.c
===================================================================
--- gcc/config/darwin.c    (revision 168662)
+++ gcc/config/darwin.c    (working copy)
@@ -2618,7 +2618,8 @@
   if (flag_var_tracking
       && (generating_for_darwin_version >= 9)
       && debug_info_level >= DINFO_LEVEL_NORMAL
-      && debug_hooks->var_location != do_nothing_debug_hooks.var_location)
+      && (flag_generate_lto ? (write_symbols == DWARF2_DEBUG)
+      : (debug_hooks->var_location != do_nothing_debug_hooks.var_location)))
     flag_var_tracking_uninit = 1;

   if (MACHO_DYNAMIC_NO_PIC_P)