Bison 3.7 fails

[certik]

Original issue: https://gitlab.com/lfortran/lfortran/-/issues/259

For some reason, Bison 3.7 fails to build our parser:

+ bison -Wall -d -r all parser.yy
time limit exceeded: 6.000000
time limit exceeded: 6.000000
time limit exceeded: 6.000000
time limit exceeded: 6.000000
time limit exceeded: 6.000000
time limit exceeded: 6.000000
time limit exceeded: 6.000000
^C

The last version that is known to work is Bison 3.4.

[thierry-FreeBSD]

Same with bison 3.8.2.

[certik]

@thierry-FreeBSD I have no idea why it does it. To debug it, we can simply use "bisection" to manually figure out the smallest Bison file that still fails and then we should report it to Bison as a bug, assuming it's a bug in Bison.

If there is any work around that we could use, that would be great.

[thierry-FreeBSD]

@certik Fortunately, with bison 3.8.2 it is only a warning, and the build continues.

Everything seems OK, but one test fails with an error very similar to #509 .

[certik]

Are you on FreeBSD? Guessing from your handle. :)

I think FreeBSD might have similar issues as OpenBSD, so we can do similar fixes.