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[Sanitizer] Fix the implementation of internal_fstat on LoongArch

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If `pathname` is an empty string and the AT_EMPTY_PATH flag is specified in `flags`,
statx `pathname` argument is of type `const char *restrict`, so it should be `""`
instead of `0`.

Reviewed By: SixWeining, xen0n, xry111, lixing-star

Differential Revision: https://reviews.llvm.org/D138414
This commit is contained in:
Youling Tang 2022-11-22 22:08:47 +08:00 committed by Weining Lu
parent d38735e601
commit dcefbce281
1 changed files with 1 additions and 1 deletions
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2
compiler-rt/lib/sanitizer_common/sanitizer_linux.cpp
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@ -440,7 +440,7 @@ uptr internal_fstat(fd_t fd, void *buf) {
return res;
# elif SANITIZER_LINUX && defined(__loongarch__)
struct statx bufx;
int res = internal_syscall(SYSCALL(statx), fd, 0, AT_EMPTY_PATH,
int res = internal_syscall(SYSCALL(statx), fd, "", AT_EMPTY_PATH,
STATX_BASIC_STATS, (uptr)&bufx);
statx_to_stat(&bufx, (struct stat *)buf);
return res;