forked from OSchip/llvm-project
daa3ebce28
Current AArch64 {sig}{set,long}jmp interposing requires accessing glibc
private __pointer_chk_guard to get process xor mask to demangled the
internal {sig}jmp_buf function pointers.
It causes some packing issues, as described in gcc PR#71042 [1], and is
is not a godd practice to rely on a private glibc namespace (since ABI is
not meant to be stable).
This patch fixes it by changing how libtsan obtains the guarded pointer
value: at initialization a specific routine issues a setjmp call and
using the mangled function pointer and the original value derive the
random guarded pointer.
Checked on aarch64 39-bit VMA.
[1] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71042
llvm-svn: 278292
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| .. | ||
| benchmarks | ||
| dd | ||
| go | ||
| rtl | ||
| tests | ||
| .clang-format | ||
| CMakeLists.txt | ||
| analyze_libtsan.sh | ||
| check_analyze.sh | ||
| check_cmake.sh | ||