The Linux next building selftests with clang-17 and gcc-13 found these build warnings.
Reported-by: Linux Kernel Functional Testing lkft@linaro.org
Build log: --------- PATH: selftests/arm64/fp The reported build warnings noticed on following test files. * sve-ptrace.c * za-ptrace.c * zt-ptrace.c
clang-17 warnings: ----- sve-ptrace.c:85:40: warning: data argument not used by format string [-Wformat-extra-args] 85 | ksft_exit_fail_msg("PTRACE_TRACEME", strerror(errno)); | ~~~~~~~~~~~~~~~~ ^ sve-ptrace.c:88:40: warning: data argument not used by format string [-Wformat-extra-args] 88 | ksft_exit_fail_msg("raise(SIGSTOP)", strerror(errno)); | ~~~~~~~~~~~~~~~~ ^ sve-ptrace.c:344:11: warning: format specifies type 'int' but the argument has type 'size_t' (aka 'unsigned long') [-Wformat] 343 | ksft_test_result_fail("Error allocating %d byte buffer for %s VL %u\n", | ~~ | %zu 344 | data_size, type->name, vl); | ^~~~~~~~~ and more
Gcc-13 warnings: ------ sve-ptrace.c: In function 'do_child': sve-ptrace.c:85:36: warning: too many arguments for format [-Wformat-extra-args] 85 | ksft_exit_fail_msg("PTRACE_TRACEME", strerror(errno)); | ^~~~~~~~~~~~~~~~ sve-ptrace.c:88:36: warning: too many arguments for format [-Wformat-extra-args] 88 | ksft_exit_fail_msg("raise(SIGSTOP)", strerror(errno)); | ^~~~~~~~~~~~~~~~ sve-ptrace.c: In function 'ptrace_set_sve_get_sve_data': sve-ptrace.c:343:58: warning: format '%d' expects argument of type 'int', but argument 2 has type 'size_t' {aka 'long unsigned int'} [-Wformat=] 343 | ksft_test_result_fail("Error allocating %d byte buffer for %s VL %u\n", | ~^ | | | int | %ld 344 | data_size, type->name, vl); | ~~~~~~~~~ | | | size_t {aka long unsigned int} and more
Steps to reproduce: --- tuxmake --runtime podman --target-arch arm64 --toolchain clang-nightly \ --kconfig https://storage.tuxsuite.com/public/linaro/lkft/builds/2fDW3nAXzFH2GOEle3S3M... \ LLVM=1 LLVM_IAS=1 debugkernel dtbs dtbs-legacy headers kernel kselftest modules
tuxmake --runtime podman --target-arch arm64 --toolchain gcc-13 \ --kconfig https://storage.tuxsuite.com/public/linaro/lkft/builds/2fDW3wG8BqWxf0afUI5f4... \ debugkernel dtbs dtbs-legacy headers kernel kselftest modules
Links: - https://storage.tuxsuite.com/public/linaro/lkft/builds/2fDW3nAXzFH2GOEle3S3M... - https://storage.tuxsuite.com/public/linaro/lkft/builds/2fDW3wG8BqWxf0afUI5f4...
-- Linaro LKFT https://lkft.linaro.org
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