[llvm] [llvm][Support] Add support for executing a detached process (PR #81708)

[Connor Sughrue via llvm-commits]

cpsughrue wrote:

> Looks good so far. Could you possibly add a unit test like
> 
> https://github.com/llvm/llvm-project/blob/26d4afc3de86ca5416c8e38000362c526b6808cd/llvm/unittests/Support/ProgramTest.cpp#L287
> 
> please?

Definitely! I have a test I am working on locally that pretty much copies the example you provided. For some reasons the test hangs when I do not include the do while loop at the end and passes without issue when I include the do while loop. Once I get that sorted out I will push the unittest.

https://github.com/llvm/llvm-project/pull/81708