Patch: PR driver/30246

[Tom Tromey]

This patch fixes PR driver/30246.

The bug is that:

    gcc -ggdb3 -E foo.c > foo.i
    gcc -ggdb3 -c foo.i

does not put macro definitions into the .o, while:

    gcc -ggdb3 -c foo.c

does.

Andrew Pinski suggested the fix, namely to make sure that -dD is
passed when -ggdb3 is seen.

Bootstrapped and tested on x86 FC 6.

Ok?

Tom

:ADDPATCH driver:

2007-01-20  Tom Tromey  <tromey@redhat.com>

	PR driver/30246
	* gcc.c (cpp_unique_options): -ggdb3 implies -dD.

Index: gcc/gcc.c
===================================================================
--- gcc/gcc.c	(revision 120997)
+++ gcc/gcc.c	(working copy)
@@ -1,7 +1,7 @@
 /* Compiler driver program that can handle many languages.
    Copyright (C) 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
-   1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 Free Software Foundation,
-   Inc.
+   1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
+   2007 Free Software Foundation, Inc.
 
 This file is part of GCC.
 
@@ -776,7 +784,7 @@
  %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
  %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
  %{!E:%{!M:%{!MM:%{MD|MMD:%{o*:-MQ %*}}}}}\
- %{remap} %{g3:-dD} %{H} %C %{D*&U*&A*} %{i*} %Z %i\
+ %{remap} %{g3|ggdb3:-dD} %{H} %C %{D*&U*&A*} %{i*} %Z %i\
  %{fmudflap:-D_MUDFLAP -include mf-runtime.h}\
  %{fmudflapth:-D_MUDFLAP -D_MUDFLAPTH -include mf-runtime.h}\
  %{E|M|MM:%W{o*}}";