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Re: SEGFAULT when writing array of arrays to buffer
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From: |
Jose E. Marchesi |
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Subject: |
Re: SEGFAULT when writing array of arrays to buffer |
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Date: |
Thu, 24 Nov 2022 16:33:21 +0100 |
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User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) |
Hi there.
> I can reproduce bug 28380 [1] using the latest revision of GNU poke
> from the git repository (revision
> 52fd6468b803c8561762172d961c92c0b298d728). Since this bug is marked as
> UNCONFIRMED, I think it should be at least marked CONFIRMED if a
> developer can reproduce the steps listed below that provokes the
> crash.
>
> I can provide additional details if asked.
>
> [1] https://sourceware.org/bugzilla/show_bug.cgi?id=28380
Yes, we are aware of why this happens. We hope to fix it before we
release poke 3.0 (which will happen in a few weeks.)
In the meanwhile yes, sure, I just switched the bug to NEW.
Thanks.
>
> Thanks,
>
> Agathe.
>
> -----
>
> _____
> ---' __\_______
> ______) GNU poke 2.4
> __)
> __)
> ---._______)
>
> Copyright (C) 2019-2022 The poke authors.
> License GPLv3+: GNU GPL version 3 or later.
> This is free software: you are free to change and redistribute it.
> There is NO WARRANTY, to the extent permitted by law.
>
> Powered by Jitter 0.9.284.
> Perpetrated by Jose E. Marchesi.
>
> For help, type ".help".
> Type ".exit" to leave the program.
> (poke) .mem test
> The current IOS is now `*test*'.
> (poke) var a = [0xffUB,0x42UB,0x13UB]
> (poke) var l = [a,a,a,a,a]
> (poke) var i = [l,l,l,l,l]
> (poke) i
> [[[255UB,66UB,19UB],[255UB,66UB,19UB],[255UB,66UB,19UB],[255UB,66UB,19UB],[255UB,66UB,19UB]],[[255UB,66UB,19UB],[255UB,66UB,19UB],[255UB,66UB,19UB],[255UB,66UB,19UB],[255UB,66UB,19UB]],[[255UB,66UB,19UB],[255UB,66UB,19UB],[255UB,66UB,19UB],[255UB,66UB,19UB],[255UB,66UB,19UB]],[[255UB,66UB,19UB],[255UB,66UB,19UB],[255UB,66UB,19UB],[255UB,66UB,19UB],[255UB,66UB,19UB]],[[255UB,66UB,19UB],[255UB,66UB,19UB],[255UB,66UB,19UB],[255UB,66UB,19UB],[255UB,66UB,19UB]]]
> (poke) byte[3][5][5] @ 0#B = i
> (poke) dump
> 76543210 0011 2233 4455 6677 8899 aabb ccdd eeff 0123456789ABCDEF
> 00000000: 0000 0000 0000 0000 0000 0000 0000 0000 ................
> 00000010: 0000 0000 0000 0000 0000 0000 0000 0000 ................
> 00000020: 0000 0000 0000 0000 0000 0000 0000 0000 ................
> 00000030: 0000 0000 0000 0000 0000 0000 0000 0000 ................
> 00000040: 0000 0000 0000 0000 ff42 1300 0000 0000 .........B......
> 00000050: 0000 0000 0000 0000 0000 0000 0000 0000 ................
> 00000060: 0000 0000 0000 0000 0000 0000 0000 0000 ................
> 00000070: 0000 0000 0000 0000 0000 0000 0000 0000 ................
> (poke) l
> [1] 196333 segmentation fault ./run poke