From: Bart Schaefer <schaefer@brasslantern.com>
To: zsh-workers@zsh.org
Subject: Re: When is mem.c / malloc called?
Date: Fri, 10 Feb 2017 10:11:32 -0800 [thread overview]
Message-ID: <170210101132.ZM28854@torch.brasslantern.com> (raw)
In-Reply-To: <1486739822.1529995.876898008.190D9C9B@webmail.messagingengine.com>
On Feb 10, 7:17am, Sebastian Gniazdowski wrote:
} Subject: Re: When is mem.c / malloc called?
}
} Don't know why, but now when I have the fprintf() ...
} then I see "Hello", and shell startup always ends in:
}
} mem.c:1341: MEM: allocation error at sbrk, size 20480.
}
} i.e. aborts, so I guess I'm safe - the pathway to use non-standard,
} thread unsafe malloc() is blocked because it's not working.
What's not working is your debugging technique. fprintf/fflush invoke
memory allocation, so if you use them *inside* the allocator, things
break. You would need to use low-level system calls e.g. write()
directly to avoid this, or use an actual debugger like GDB and put a
breakpoint in malloc.
next prev parent reply other threads:[~2017-02-10 18:27 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-10 12:24 Sebastian Gniazdowski
2017-02-10 15:17 ` Sebastian Gniazdowski
2017-02-10 18:11 ` Bart Schaefer [this message]
2017-02-10 18:25 ` Bart Schaefer
2017-02-10 19:45 ` Sebastian Gniazdowski
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