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Description
This PR is the latest attempt at fixing a race condition when spawning processes in Windows.
Previous attempts were #2253 and #1987
Third time should do it:
using
PROC_THREAD_ATTRIBUTE_HANDLE_LIST
requires to setbInheritHandles =TRUE
inCreateProcess
(so #2253 was wrong, and the pieces that were working were by pure luck)https://docs.microsoft.com/en-us/windows/win32/api/processthreadsapi/nf-processthreadsapi-updateprocthreadattribute
the problem was actually that #1987 didn't set
PROC_THREAD_ATTRIBUTE_HANDLE_LIST
when redirectingstdout
, this was causing all inheritable handles to be inherited.