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From: Sheng Yang <sheng@linux.intel.com>
Date: Thu, 4 Feb 2010 15:04:52 +0800
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Message-Id: <201002041504.52626.sheng@linux.intel.com>
Subject: [Qemu-devel] "Enable _FORTIFY_SOURCE=2" result in building failure
	for qemu-img.c
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To: qemu-devel@nongnu.org
Cc: "Kirill A. Shutemov" <kirill@shutemov.name>, Anthony Liguori <aliguori@us.ibm.com>, Juan Quintela <quintela@redhat.com>

Got this building failure:

In file included from qemu-img.c:68:                                       =
                                                                           =
                                 =20
qemu-img-cmds.h:22:1: error: unterminated argument list invoking macro=20
"printf"                                                                   =
                                     =20
cc1: warnings being treated as errors
qemu-img.c: In function =E2=80=98help=E2=80=99:
qemu-img.c:95: warning: statement with no effect
qemu-img.c:71: error: expected =E2=80=98;=E2=80=99 before string constant
qemu-img.c:95: error: expected statement before =E2=80=98)=E2=80=99 token
make: *** [qemu-img.o] Error 1

And git bisect figure out the commit: 84958305, "Enable _FORTIFY_SOURCE=3D2=
".

And the code is here:

    printf("qemu-img version " QEMU_VERSION ", Copyright (c) 2004-2008 Fabr=
ice=20
Bellard\n"
           "usage: qemu-img command [command options]\n"
           "QEMU disk image utility\n"
           "\n"
           "Command syntax:\n"
#define DEF(option, callback, arg_string)        \
           "  " arg_string "\n"
#include "qemu-img-cmds.h"
#undef DEF
#undef GEN_DOCS
=2E...

Seems gcc take "printf" as a marco. I added a "#undef printf" before the li=
ne,=20
then it works...

So any clue on what's happened and how to fix?

GCC version is 4.1.2.

=2D-=20
regards
Yang, Sheng