kernel_samsung_a53x/tools/testing
John Hubbard bb7954e49f selftests/vDSO: fix clang build errors and warnings
[ Upstream commit 73810cd45b99c6c418e1c6a487b52c1e74edb20d ]

When building with clang, via:

    make LLVM=1 -C tools/testing/selftests

...there are several warnings, and an error. This fixes all of those and
allows these tests to run and pass.

1. Fix linker error (undefined reference to memcpy) by providing a local
   version of memcpy.

2. clang complains about using this form:

    if (g = h & 0xf0000000)

...so factor out the assignment into a separate step.

3. The code is passing a signed const char* to elf_hash(), which expects
   a const unsigned char *. There are several callers, so fix this at
   the source by allowing the function to accept a signed argument, and
   then converting to unsigned operations, once inside the function.

4. clang doesn't have __attribute__((externally_visible)) and generates
   a warning to that effect. Fortunately, gcc 12 and gcc 13 do not seem
   to require that attribute in order to build, run and pass tests here,
   so remove it.

Reviewed-by: Carlos Llamas <cmllamas@google.com>
Reviewed-by: Edward Liaw <edliaw@google.com>
Reviewed-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
Tested-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
Signed-off-by: John Hubbard <jhubbard@nvidia.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-11-19 14:19:50 +01:00
..
fault-injection Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
ktest ktest: force $buildonly = 1 for 'make_warnings_file' test type 2024-11-19 09:23:15 +01:00
kunit Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
kunit_mainline Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
nvdimm Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
radix-tree Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
scatterlist Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
selftests selftests/vDSO: fix clang build errors and warnings 2024-11-19 14:19:50 +01:00
vsock Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00