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[sanitizer][aarch64] fix clone system call's inline assembly 

Return value of the system call was not returned normally.
It was discussed at https://reviews.llvm.org/D105169.
This commit is contained in:
hyeongyu kim 2021-11-14 09:45:40 +09:00
parent e56d680fe8
commit 7f7cab6bb1
1 changed files with 1 additions and 1 deletions
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compiler-rt/lib/sanitizer_common/sanitizer_linux.cpp
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@ -1380,7 +1380,7 @@ uptr internal_clone(int (*fn)(void *), void *child_stack, int flags, void *arg,
#elif defined(__aarch64__)
uptr internal_clone(int (*fn)(void *), void *child_stack, int flags, void *arg,
int *parent_tidptr, void *newtls, int *child_tidptr) {
long long res;
register long long res __asm__("x0");
if (!fn || !child_stack)
return -EINVAL;
CHECK_EQ(0, (uptr)child_stack % 16);