Cygwin bison enters endless loops, and times out builds, since about a week

Vladislav Vaintroub's Avatar

Vladislav Vaintroub

08 Nov, 2021 06:04 PM

On our appveyor instance, for about a week, we experience timeouts.
Using RDP, I went on the build box to see what happens. 2 instances of cygwin64 bison use up all CPU, so that the build never finishes . I workaround (on main branch trees), by using winflexbison instead. Just a heads up, in case someone has similar experience. is an example of such a build, nothing happens after about 10 minutes into the build. I'm not even sure how to reproduce that, unless on appveyor, if I use local cygwin installation, latest one, with updated bison, everything works ok.

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