[sanitizer] Update struct_kernel_stat_sz for mips32 and mipsn32

[wzssyqa]

Summary

On mips32 _LARGEFILE_SOURCE and _FILE_OFFSET_BITS == 64 is used (compiler-rt/cmake/base-config-ix.cmake),
thus the correct struct_kernel_stat_sz should be 160 instead of 144.

This value is also updated for N32, since we will use
_LARGEFILE_SOURCE and _FILE_OFFSET_BITS == 64 in future.

Fix https://github.com/llvm/llvm-project/issues/55499

[AdrianBunk]

@wzssyqa https://github.com/llvm/llvm-project/issues/55499#issuecomment-1128802462 links to a gcc change that seems to fix the same issue.

[wzssyqa]

In D135553#3878557, @AdrianBunk wrote:

@wzssyqa https://github.com/llvm/llvm-project/issues/55499#issuecomment-1128802462 links to a gcc change that seems to fix the same issue.

Yes, you are correct. We can hardcode it, since we always build it with

_FILE_OFFSET_BITS=64

[MaskRay]

Will you change the patch to do https://github.com/gcc-mirror/gcc/commit/9f943b2446f2d0a345bbf9b4be3d3a4316372270 instead?

[wzssyqa]

In D135553#3881352, @MaskRay wrote:

Will you change the patch to do https://github.com/gcc-mirror/gcc/commit/9f943b2446f2d0a345bbf9b4be3d3a4316372270 instead?

Sure. Build machine is working ....

[MaskRay]

Is _FILE_OFFSET_BITS == 32 supported? Does this change drop support for any configuration?

[MaskRay]

Is your description updated?

The link should be changed to https://github.com/llvm/llvm-project/issues/55499

[wzssyqa]

In D135553#3883885, @MaskRay wrote:

Is _FILE_OFFSET_BITS == 32 supported? Does this change drop support for any configuration?

With this change _FILE_OFFSET_BITS == 32 is not supported anymore for mips32 and mipsn32.
I don't think that we should support it, since 2019

https://github.com/llvm/llvm-project/commit/7684d05d95b9369fa0454b525093ed04ee91b1e1

[wzssyqa]

In D135553#3883888, @MaskRay wrote:

Is your description updated?

The link should be changed to https://github.com/llvm/llvm-project/issues/55499

updated.

[MaskRay]

LGTM.

compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_linux.cpp

 
 #  if !defined(__powerpc64__) && !defined(__x86_64__) &&                   \
       !defined(__aarch64__) && !defined(__mips__) && !defined(__s390__) && \
       !defined(__sparc__) && !defined(__riscv) && !defined(__hexagon__) && \
       !defined(__loongarch__)
 COMPILER_CHECK(struct___old_kernel_stat_sz == sizeof(struct __old_kernel_stat));
 #endif
 
+#  if defined(__LP64__) || \
+      (!defined(_LARGEFILE_SOURCE) && _FILE_OFFSET_BITS != 64)
 COMPILER_CHECK(struct_kernel_stat_sz == sizeof(struct stat));
+#  endif
 
-#if defined(__i386__)
+#  if defined(__i386__)
 COMPILER_CHECK(struct_kernel_stat64_sz == sizeof(struct stat64));
 #endif
 
 CHECK_TYPE_SIZE(io_event);
 CHECK_SIZE_AND_OFFSET(io_event, data);
 CHECK_SIZE_AND_OFFSET(io_event, obj);
 CHECK_SIZE_AND_OFFSET(io_event, res);
 CHECK_SIZE_AND_OFFSET(io_event, res2);