-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 [adding autoconf; this is an interesting question about autotest] According to Ralf Wildenhues on 11/23/2008 6:23 AM: > Hello Eric, Hi Ralf, > > running > make check-local TESTSUITEFLAGS=-v > > on M4 (git master) produces lots of output on GNU/Linux/bash. More > precisely, the AT_CHECK in builtins.at:470 causes 1024*1024 newlines > to be output, and I think there are more instances later. Can this > easily be avoided? Hmm, this particular test _has_ to generate more than a megabyte of output in order to trigger the code path in m4 being tested (namely, that m4 starts using temporary files after it collects enough in-memory diversion output). The problem stems from the fact that by default, when you specify [stdout] as the third argument to AT_CHECK, autotest emits code that both collects the file stdout (good) and copies the resulting file into the log (annoying), and when -v is in effect, tees that copy to the terminal (bad). I think the idea behind this decision was that testsuite.log should be self-contained, with everything needed to reproduce why a test failed. The point of specifying [stdout] is that we plan on processing the resulting output file later on, so maybe we should quit trying to copy the captured file into the logs. Maybe we should revisit this, and change it so that the file is just collected, with nothing output into the log. Or even add a heuristic, where only the first and last 10 lines of the resulting file are output into the log. If the test passed, then the log doesn't need megabytes of information; and if the test fails, hopefully trimming out the middle of the file from the log still leaves enough information in the log to help diagnose what went wrong; the full file will still be available in testsuite.dir/nnn/stdout if the log was insufficient by itself. > > Hmm, maybe this is introduced by some Autotest changes in Autoconf even. No, I think this behavior is present even with 2.62, before we started using functions in autotest (although I haven't tested yet). - -- Don't work too hard, make some time for fun as well! Eric Blake ebb9@xxxxxxx -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (Cygwin) Comment: Public key at home.comcast.net/~ericblake/eblake.gpg Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iEYEARECAAYFAkkpbzEACgkQ84KuGfSFAYCWhgCgqjrLj00y1YaKAzVd5mSUfADo 6V0AoITnYeOoRP1OIIrMmAcBbINj165C =zcDH -----END PGP SIGNATURE----- _______________________________________________ Autoconf mailing list Autoconf@xxxxxxx http://lists.gnu.org/mailman/listinfo/autoconf
