https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71042
--- Comment #9 from Adhemerval Zanella <adhemerval.zanella at linaro dot org>
---
Right, I wasn't aware of this RPM symbol handling. I see that guard pointer
can be obtained on aarch64 by:
uintptr_t get_guard_ptr (void)
{
jmp_buf jb;
uintptr_t expected, mangled;
setjmp (jb);
asm volatile ("adr %0, ." : "=r" (expected));
mangled = ((uintptr_t*)jb)[11];
return expected ^ mangled;
}
So I think we can add a local variable to hold its value and set
tsan_rtl_aarch64.S to use it instead.
