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Subject:	Re: 2.4-2.5 x64: bash crashes on backticks, gdb crashes on opening core dump
To:	cygwin AT cygwin DOT com
References:	<56EE67C4 DOT 1070900 AT mail DOT mipt DOT ru>
From:	Marco Atzeri <marco DOT atzeri AT gmail DOT com>
Message-ID:	<56EE9BDF.4080101@gmail.com>
Date:	Sun, 20 Mar 2016 13:47:27 +0100
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On 20/03/2016 10:05, Ivan Pozdeev wrote:
> bash
> ----
> I'm being plagued by these crashes for about half a month now.
> Specifically, it cannot run any `configure' script.
> The crashes appear to happen in child bash/sh processes launched while
> processing backticks. Other times, commands with stream redirection fail
> silently or produce nothing. Simple commands or very short scripts do
> not fail.

Any BLODA around ?

> On trying to open `sh.exe.core', gdb 1.10 crashes, too; gdb 1.9 says
> "get_core_register_section: Assertion `core_vec' failed" (see
> attachment). So I'm unable to diagnose bash's problem right now.
>
> At another machine with the same packages, bash does not fail, but gdb's
> problem stands. Already tried reinstalling all the packages `bash'
> depends on and itself to no effect.
>
> gdb
> ---
> I managed to debug the gdb session with VisualGDB (trial).
> It turns out, the root cause is that the /bin/sh executable is x64, but
> the core file `sh.exe.core' - of the same executable - has i386 format!
> (objdump: <...>sh.exe.core:     file format elf32-i386)

Are you sure about the 64 bit dumper ?
https://www.cygwin.com/cygwin-ug-net/dumper.html


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