Re: bug#57129: 29.0.50; Improve behavior of conditionals in Eshell

[Bruno Haible]

Paul Eggert wrote:
> Emacs 'configure' deliberately suppresses MinGW's clock_gettime.

Ah, this explains why Eli saw the problem in Emacs in a deterministic
manner, whereas I see it only with 0.3% probability in my tests on 64-bit
mingw.

> I installed 
> into Gnulib the attached patch, which I hope fixes the Emacs problem 
> without changing glibc's generated code (once this gets migrated back 
> into glibc).

In 10000 runs on 64-bit mingw, your patch went from 27 test failures
to 11 test failures. So, we're still at ca. 0.1% probability (*), far
above the 62^-6 or 10^-10 probability that one would have hoped for.

(*) I wouldn't consider these measurements reliable. Maybe the probability
did not change, and what I'm seeing is merely a measurement fluke.

Bruno