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   Natanael Copa (ncopa@fosstodon.org)'s status on Friday, 19-Apr-2024 19:02:13 JST Natanael Copa

   Been fighting the bug of the year last days. When bootstrapping 3.20 builders fakeroot test failed on all architectures. So a blocker for 3.20. Time sensitive. Analyze shows that the test verifies that owners of files in tarballs are what they should. They are not. Probably causing https://gitlab.alpinelinux.org/alpine/aports/-/merge_requests/63669

   So it is serious.

   I find out that it happens with older (1.32) and newer (1.34) fakeroot. So not fakeroot. Some testing shows that it was triggered by coreutils 9.5. with 9.4 tests passes.

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     Natanael Copa (ncopa@fosstodon.org)'s status on Friday, 19-Apr-2024 19:02:12 JST Natanael Copa

     in reply to

     Nothing evident in coreutils git log, so I git bisect.

     But I have to kill a dragon named gnulib on the way to the bad commit. `make` will not build coreutils without re-bootstrapping gnulib at times. I find the bad commit.
     https://github.com/coreutils/coreutils/commit/193449b17334649a2abcbca589544d858fca92a1

     But it has nothing to do with whatsoever. ripgrep tells me nothing should use `env` in any significant way.

     Haelwenn /элвэн/ :triskell: likes this.
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     Natanael Copa (ncopa@fosstodon.org)'s status on Friday, 19-Apr-2024 19:02:12 JST Natanael Copa

     in reply to

     So I suspect that the dragon wasn't really killed. it just pretended to be dead, and now it is rising again and attacking me from behind. What if the cause of this is in gnulib?

     How do I bisect a such dragon? How do I build new coreutils from git with old gnulib?

     This code is dark. very dark.

     Haelwenn /элвэн/ :triskell: likes this.
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     Natanael Copa (ncopa@fosstodon.org)'s status on Friday, 19-Apr-2024 22:12:34 JST Natanael Copa

     in reply to

     I'm gonna try another bisect. here is how time will be spent on each rebuild cycle:

     boostrap autoconf with gnulib:
     real 4m 5.16s

     running configure:
     real 1m 0.53s

     running full compile with make:
     real 0m 3.57s

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     Natanael Copa (ncopa@fosstodon.org)'s status on Friday, 19-Apr-2024 22:12:34 JST Natanael Copa

     in reply to

     Alright the dragon is finally killed. Maybe not killed. just put to permanent sleep.

     I have a new offending commit, and things start to make sense.

     Haelwenn /элвэн/ :triskell: likes this.
     Haelwenn /элвэн/ :triskell: repeated this.
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     Natanael Copa (ncopa@fosstodon.org)'s status on Friday, 19-Apr-2024 22:12:35 JST Natanael Copa

     in reply to

     I could revert coreutils to 9.4 to get the 3.20 builders up, but 9.5 fixes a CVE so I don't want to do that either.

     There is only one way to go, and it is forward.

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     Natanael Copa (ncopa@fosstodon.org)'s status on Friday, 19-Apr-2024 23:38:29 JST Natanael Copa

     in reply to

     Explanation with links on what happens:
     https://gitlab.alpinelinux.org/alpine/aports/-/issues/16016#note_396726

     Haelwenn /элвэн/ :triskell: likes this.