Vicente Olivert Riera baa50f60ac backtrace.c: Fix word cast to a pointer
backtrace.c uses a word size provided by libunwind. In some
architectures like MIPS, libunwind makes that word size 64-bit for all
variants of the architecture.

In the lines #90 and #98, backtrace.c tries to do a cast to a pointer,
which fails in all MIPS variants with 32-bit pointers, like MIPS32 or
MIPS64 n32, because it's trying to do a cast from a 64-bit wide variable
to a 32-bit pointer:

Making all in os
make[2]: Entering directory
`/home/test/test/1/output/build/xserver_xorg-server-1.15.1/os'
  CC     WaitFor.lo
  CC     access.lo
  CC     auth.lo
  CC     backtrace.lo
backtrace.c: In function 'xorg_backtrace':
backtrace.c:90:20: error: cast to pointer from integer of different size
[-Werror=int-to-pointer-cast]
	 if (dladdr((void *)(pip.start_ip + off), &dlinfo) &&
dlinfo.dli_fname &&
		    ^
backtrace.c:98:13: error: cast to pointer from integer of different size
[-Werror=int-to-pointer-cast]
	     (void *)(pip.start_ip + off));
	     ^
cc1: some warnings being treated as errors
make[2]: *** [backtrace.lo] Error 1
make[2]: *** Waiting for unfinished jobs....

Making the cast to a pointer-sized integer, and then to a pointer fixes
the problem.

Related:
  https://bugs.freedesktop.org/show_bug.cgi?id=79939

Signed-off-by: Vicente Olivert Riera <Vincent.Riera@imgtec.com>
Reviewed-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
2015-05-26 14:35:55 -07:00
2014-11-30 11:32:21 -08:00
2013-08-17 12:17:36 +02:00
2014-03-12 08:50:05 +01:00
2012-11-05 13:24:57 -06:00

					X Server

The X server accepts requests from client applications to create windows,
which are (normally rectangular) "virtual screens" that the client program
can draw into.

Windows are then composed on the actual screen by the X server
(or by a separate composite manager) as directed by the window manager,
which usually communicates with the user via graphical controls such as buttons
and draggable titlebars and borders.

For a comprehensive overview of X Server and X Window System, consult the
following article:
http://en.wikipedia.org/wiki/X_server

All questions regarding this software should be directed at the
Xorg mailing list:

        http://lists.freedesktop.org/mailman/listinfo/xorg

Please submit bug reports to the Xorg bugzilla:

        https://bugs.freedesktop.org/enter_bug.cgi?product=xorg

The master development code repository can be found at:

        git://anongit.freedesktop.org/git/xorg/xserver

        http://cgit.freedesktop.org/xorg/xserver

For patch submission instructions, see:

	http://www.x.org/wiki/Development/Documentation/SubmittingPatches

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        http://wiki.x.org/wiki/GitPage

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Truly free fork of the XOrg project.
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