Hello Developers,
Building linux-next with GCC 16 results in this following build error
$ make
CALL scripts/checksyscalls.sh
DESCEND objtool
INSTALL libsubcmd_headers
CC drivers/gpu/drm/radeon/r600_cs.o
drivers/gpu/drm/radeon/r600_cs.c: In function ‘r600_texture_size’:
drivers/gpu/drm/radeon/r600_cs.c:1411:29: error: variable ‘level’ set but not
used [-Werror=unused-but-set-variable=]
1411 | unsigned offset, i, level;
| ^~~~~
cc1: all warnings being treated as errors
make[6]: *** [scripts/Makefile.build:287: drivers/gpu/drm/radeon/r600_cs.o]
Error 1
make[5]: *** [scripts/Makefile.build:556: drivers/gpu/drm/radeon] Error 2
make[4]: *** [scripts/Makefile.build:556: drivers/gpu/drm] Error 2
make[3]: *** [scripts/Makefile.build:556: drivers/gpu] Error 2
make[2]: *** [scripts/Makefile.build:556: drivers] Error 2
make[1]: *** [/home/listout/linux/Makefile:2011: .] Error 2
make: *** [Makefile:248: __sub-make] Error 2
I'm not sure whether this is kernel bug or GCC bug at the moment. But
building with GCC 15 does not give this error, hence I'm more inclined
towards the latter.
Planning to also report this on GCC side, wanted to get some
opinion/feedback from kernel devs as well.
I'm on GCC 16.0.0_p2025080.
--
Regards,
listout
