error: unknown type name 'uintptr_t'; release 5.8 on arch linux

[soloturn]

on arch linux 5.8 release gets the following error:

lvm/lib/Support/Signals.cpp
In file included from /src/swift-language-3/src/llvm-project/llvm/lib/Support/Signals.cpp:14:
/swift-language-3/src/llvm-project/llvm/include/llvm/Support/Signals.h:119:24: error: unknown type name 'uintptr_t'; did you mean '__intptr_t'?
  void CleanupOnSignal(uintptr_t Context);
                       ^~~~~~~~~
                       __intptr_t
/usr/include/bits/types.h:207:25: note: '__intptr_t' declared here
__STD_TYPE __SWORD_TYPE __intptr_t;
                        ^
In file included from /src/swift-language-3/src/llvm-project/llvm/lib/Support/Signals.cpp:256:
/src/swift-language-3/src/llvm-project/llvm/lib/Support/Unix/Signals.inc:348:11: error: out-of-line definition of 'CleanupOnSignal' does not match any declaration in namespace 'llvm::sys'
void sys::CleanupOnSignal(uintptr_t Context) {
          ^~~~~~~~~~~~~~~
2 errors generated.
[167/4656][  3%][92.576s] Building C object lib/Support/BLAKE3/CMakeFiles/LLVMSupportBlake3.dir/blake3_portable.c.o
ninja: build stopped: subcommand failed.
ERROR: command terminated with a non-zero exit status 1, aborting

[soloturn]

i saw a patch from @tachoknight with a patch for 5.8 on fedora:
https://github.com/tachoknight/swift-lang-packaging-fedora/blob/5.8/uintptr.patch

[soloturn]

the commit upstream is:
llvm@ff1681d

how can one trigger that the llvm automerger takes it? @gottesmm ?