[compiler-rt] [compiler-rt][rtsan] ppoll interception. (PR #120366)

[Thurston Dang via llvm-commits]

thurstond wrote:

Minor nit fixed-forward in d8e10d13d7e31cb1695eb65f02696e682ec97097 - buildbot breakage (https://lab.llvm.org/buildbot/#/builders/51/builds/8067):
```
    home/b/sanitizer-aarch64-linux/build/llvm-project/compiler-rt/lib/rtsan/tests/rtsan_test_interceptors_posix.cpp:1090:19: error: missing field 'tv_nsec' initia
lizer [-Werror,-Wmissing-field-initializers]
     1090 |   timespec ts = {0};
```

https://github.com/llvm/llvm-project/pull/120366