llvm-project

57d2c4c7 - [libc] Update prctl() declaration to use variadic arguments. (#198654)

[libc] Update prctl() declaration to use variadic arguments. (#198654) prctl declaration should typically use variadic arguments (e.g. see https://man7.org/linux/man-pages/man2/prctl.2.html), as the types / quantity of subsequent arguments depends on the `option`. We can't depend on all `<prctl.h>` users to explicitly cast arguments to `unsigned long` and passing all 5 of them every time. * Don't add any option-specific logic, and just consume `arg2`-`arg5` from variadic arguments and pass them to syscall implementation as-is, assuming that they won't be used by the kernel if they are not needed, and consuming these arguments won't lead to crashes. * Updated the test to use `prctl` variants with less than 5 explicit arguments (for PR_SET_NAME and PR_GET_NAME).