"Bus Error" at thread.c:228 on OS X with Xcode 2.4 and -O2

[dackz]

> From what I've heard, there was a bug in the gcc bundled with Xcode

2.3 that caused stack alignment issues when -O2 was used (and maybe
-O1?). This is supposed to be fixed in Xcode 2.4, which is what I'm
using, yet I'm still getting a "Bus Error" with all default CFLAGS.
Adding -O0 into the mix fixes the problem.

Here's all I could gleam with gdb:

Breakpoint 1, NtAllocateVirtualMemory (process=0x7bc5b6f1,
ret=0xbffff949, zero_bits=3221222220, size_ptr=0x10000,
type=3221222216, protect=2147352576) at virtual.c:1306
1306    in virtual.c
(gdb) bt
#0  NtAllocateVirtualMemory (process=0x7bc5b6f1, ret=0xbffff949,
zero_bits=3221222220, size_ptr=0x10000, type=3221222216,
protect=2147352576) at virtual.c:1306
#1  0x7bc4f428 in thread_init () at thread.c:224
#2  0x7bc2beea in __wine_process_init () at loader.c:2354
#3  0x60a088c1 in wine_init (argc=2, argv=0xbffff8b8, error=0xbffff450
"", error_size=1024) at loader.c:664
#4  0x7bf00f2d in main (argc=2, argv=0xbffff8b8) at main.c:58
[stepping...]
(gdb) step
NtAllocateVirtualMemory (process=0x2001, ret=0xbffff22c,
zero_bits=1048576, size_ptr=0x1000, type=4294967295, protect=10514258)
at virtual.c:1379
1379    in virtual.c
(gdb) print status
$22 = 0
[stepping...]
(gdb) step
thread_init () at thread.c:226
226     thread.c: No such file or directory.
        in thread.c
(gdb) print addr
$23 = (void *) 0x7ffde000
(gdb) print size
$24 = 4096
(gdb) step
228     in thread.c
(gdb) step

Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_PROTECTION_FAILURE at address: 0x7ffde064
thread_init () at thread.c:228
228     in thread.c
(gdb) bt
#0  thread_init () at thread.c:228
#1  0x7bc2beea in __wine_process_init () at loader.c:2354
#2  0x60a088c1 in wine_init (argc=2, argv=0xbffff8b8, error=0xbffff450
"", error_size=1024) at loader.c:664
#3  0x7bf00f2d in main (argc=2, argv=0xbffff8b8) at main.c:58
(gdb)

thread.c:228 being "peb->NumberOfProcessors = 1;", and peb being 0x7ffde000.

Here's some environment information:

OS: Mac OS X 10.4.7
Xcode: Xcode 2.4
X11: XFree86 Version 4.4.0 / X Window System
(protocol Version 11, revision 0, vendor release 6600)

gcc -v: Using built-in specs.
Target: i686-apple-darwin8
Configured with: /private/var/tmp/gcc/gcc-5363.obj~28/src/configure
--disable-checking -enable-werror --prefix=/usr --mandir=/share/man
--enable-languages=c,objc,c++,obj-c++
--program-transform-name=/^[cg][^.-]*$/s/$/-4.0/
--with-gxx-include-dir=/include/c++/4.0.0 --with-slibdir=/usr/lib
--build=powerpc-apple-darwin8 --with-arch=nocona --with-tune=generic
--program-prefix= --host=i686-apple-darwin8
--target=i686-apple-darwin8
Thread model: posix
gcc version 4.0.1 (Apple Computer, Inc. build 5363)

uname -a: Darwin my-computer 8.7.1 Darwin Kernel Version 8.7.1: Wed
Jun  7 16:19:56 PDT 2006; root:xnu-792.9.72.obj~2/RELEASE_I386 i386
i386

I've built Wine with the following DarwinPorts portfile:

# $Id: $
PortSystem        1.0
name              wine
version           0.9.20
description       Windows compatibility layer
long_description  Microsoft Windows compatibility layer for Unix-like systems
categories        emulators
maintainers       [e-mail]
platforms         darwin freebsd
homepage          http://www.winehq.org/
master_sites      sourceforge:wine
use_bzip2         yes
depends_lib       bin:bison:bison bin:fontforge:fontforge bin:gmake:gmake \
                  bin:m4:m4 bin:pkg-config:pkgconfig \
                  lib:libfontconfig:fontconfig lib:libfreetype:freetype \
                  lib:libintl:gettext lib:libjpeg:jpeg lib:libncurses:ncurses \
                  lib:libX11:XFree86 lib:liblcms:lcms lib:libglut:glut \
                  lib:libgphoto2:libgphoto2 lib:libsane:sane-backends \
                  lib:libssl:openssl lib:libungif:libungif \
                  lib:libxml2:libxml2 lib:libxslt:libxslt
build.type        gnu

checksums ${distname}${extract.suffix} md5    3e80a07819e4df084becdbbcd4d6cdd3 \
                                       sha1
71b918dcdc54bc32e0b37a63f66891bb7c96b938 \
                                       rmd160
80f1a055674b56ec7cb9231d08b837d1a1a4e883

platform darwin powerpc {
    ui_msg "Wine is not supported on PowerPC"
    exit 1
}

Which installs the following:

fontforge @20060125_0 (active)
  freetype @2.1.10_1 (active)
  gettext @0.14.6_0 (active)
  glut @3.7_0 (active)
  gmake @3.81_0 (active)
  jpeg @6b_1 (active)
  lcms @1.15_0 (active)
  libgphoto2 @2.1.5_0 (active)
  libiconv @1.10_1+darwin_8 (active)
  libpng @1.2.10_2+darwin_8 (active)
  libungif @4.1.4_0 (active)
  libuninameslist @20050712_0 (active)
  libusb @0.1.12_0 (active)
  pkgconfig @0.21_0 (active)
  sane-backends @1.0.17_0+local-backends (active)
  tiff @3.8.2_0+darwin_8 (active)
  wine @0.9.20_0 (active)
  zlib @1.2.3_0 (active)