> On Aug 15, 2023, at 9:30, Takashi Yano <takashi.y...@nifty.ne.jp> wrote: > > Your test case does not work in command prompt as well. > > Try > type testfile | test-pipe sizeoftestfile > in command prompt. It will fail.
Interesting. > > New pipe implementation since cygwin 3.4.x provides the pipes > more similar to pipe in command prompt for non-cygwin apps. What are the differences between these pipes? What changed? > > Since your test case is compiled with cl.exe, it is non-cygwin > apps. When the failure first appeared the bash shell included with Git for Windows was being used to run the pipe (`bash -c "cat foo | bar”`). The shell was started by ctest which had been run from PowerShell. Is this cygwin or non-cygwin? in https://github.com/git-for-windows/git/issues/4464#issuecomment-1671137446 the author provided minimal adaption to the reproducer to compile it with g++ and reproduced the failure on Cygwin. It looks like the failure happens for both cygwin and non-cygwin. It is probably related to the new pipe implementation you mentioned. Regards -Mark
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