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8c539854dd
xlib_xtrans clients (for example xserver_xorg-server) are failing to
compile with gcc 15.1.0.
The issue can be reproduced with the commands:
cat >.config <<EOF
BR2_aarch64=y
BR2_TOOLCHAIN_EXTERNAL=y
BR2_TOOLCHAIN_EXTERNAL_BOOTLIN=y
BR2_PACKAGE_XORG7=y
BR2_PACKAGE_XSERVER_XORG_SERVER=y
EOF
make olddefconfig
make xserver_xorg-server
which outputs the compilation error:
auth.c: In function 'GenerateRandomData': auth.c:320:5: warning:
ignoring return value of 'read' declared with attribute
'warn_unused_result' [-Wunused-result] 320 | read(fd, buf, len);
| ^~~~~~~~~~~~~~~~~~ In file included from
/home/wbx/buildroot/output/host/x86_64-buildroot-linux-gnu/sysroot/usr/include/string.h:548,
from
/home/wbx/buildroot/output/host/x86_64-buildroot-linux-gnu/sysroot/usr/include/X11/Xos.h:62,
from
/home/wbx/buildroot/output/host/x86_64-buildroot-linux-gnu/sysroot/usr/include/X11/Xtrans/Xtrans.h:54,
from
/home/wbx/buildroot/output/host/x86_64-buildroot-linux-gnu/sysroot/usr/include/X11/Xtrans/Xtransint.h:79,
from
/home/wbx/buildroot/output/host/x86_64-buildroot-linux-gnu/sysroot/usr/include/X11/Xtrans/transport.c:55,
from xstrans.c:17: In function 'strncpy', inlined from
'_XSERVTransGetHostname' at
/home/wbx/buildroot/output/host/x86_64-buildroot-linux-gnu/sysroot/usr/include/X11/Xtrans/Xtrans.c:1351:5,
inlined from '_XSERVTransConvertAddress' at
/home/wbx/buildroot/output/host/x86_64-buildroot-linux-gnu/sysroot/usr/include/X11/Xtrans/Xtransutil.c:188:12:
/home/wbx/buildroot/output/host/x86_64-buildroot-linux-gnu/sysroot/usr/include/bits/string_fortified.h:100:10:
error: '__builtin_strncpy' offset [130, 319] from the object at 'name'
is out of the bounds of referenced subobject 'nodename' with type
'char[65]' at offset 65 [-Werror=array-bounds=] 100 | return
__builtin___strncpy_chk (__dest, __src, __len, |
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 101 |
__glibc_objsize (__dest)); |
~~~~~~~~~~~~~~~~~~~~~~~~~ In file included from
/home/wbx/buildroot/output/host/x86_64-buildroot-linux-gnu/sysroot/usr/include/X11/Xtrans/Xtransint.h:105:
/home/wbx/buildroot/output/host/x86_64-buildroot-linux-gnu/sysroot/usr/include/sys/utsname.h:
In function '_XSERVTransConvertAddress':
/home/wbx/buildroot/output/host/x86_64-buildroot-linux-gnu/sysroot/usr/include/sys/utsname.h:54:10:
note: subobject 'nodename' declared here 54 | char
nodename[_UTSNAME_NODENAME_LENGTH]; | ^~~~~~~~ cc1: some
warnings being treated as errors make[2]: *** [Makefile:696: xstrans.lo]
Error 1 make[2]: *** Waiting for unfinished jobs.... make[2]: Leaving
directory
'/home/wbx/buildroot/output/build/xserver_xorg-server-21.1.18/os'
make[1]: *** [Makefile:796: all-recursive] Error 1 make[1]: Leaving
directory '/home/wbx/buildroot/output/build/xserver_xorg-server-21.1.18'
make: *** [package/pkg-generic.mk:273:
/home/wbx/buildroot/output/build/xserver_xorg-server-21.1.18/.stamp_built]
Error 2
The update fixes the compile error.
See here for changes:
https://lists.x.org/archives/xorg/2025-March/061900.html
The COPYRIGHT was updated from 2005 to 2025.
Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
[Julien: add commands to reproduce the issue]
Signed-off-by: Julien Olivain <ju.o@free.fr>
Buildroot is a simple, efficient and easy-to-use tool to generate embedded Linux systems through cross-compilation. The documentation can be found in docs/manual. You can generate a text document with 'make manual-text' and read output/docs/manual/manual.text. Online documentation can be found at http://buildroot.org/docs.html To build and use the buildroot stuff, do the following: 1) run 'make menuconfig' 2) select the target architecture and the packages you wish to compile 3) run 'make' 4) wait while it compiles 5) find the kernel, bootloader, root filesystem, etc. in output/images You do not need to be root to build or run buildroot. Have fun! Buildroot comes with a basic configuration for a number of boards. Run 'make list-defconfigs' to view the list of provided configurations. Please feed suggestions, bug reports, insults, and bribes back to the buildroot mailing list: buildroot@buildroot.org You can also find us on #buildroot on OFTC IRC. If you would like to contribute patches, please read https://buildroot.org/manual.html#submitting-patches