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Re: [64bit] emacs is unable to call subprocesses if display-time-mode is set
- From: Christopher Faylor <cgf-use-the-mailinglist-please at cygwin dot com>
- To: cygwin-developers at cygwin dot com
- Date: Wed, 3 Apr 2013 10:17:08 -0400
- Subject: Re: [64bit] emacs is unable to call subprocesses if display-time-mode is set
- References: <5156C44D dot 7050805 at cornell dot edu> <20130330111714 dot GA17203 at calimero dot vinschen dot de> <51598232 dot 5020505 at cornell dot edu> <5159B006 dot 3060100 at cornell dot edu> <515B1DA4 dot 3020502 at cornell dot edu> <20130402190027 dot GC2468 at calimero dot vinschen dot de> <515B624A dot 4070102 at cornell dot edu> <20130403114102 dot GA31598 at calimero dot vinschen dot de> <515C3358 dot 7080108 at cornell dot edu> <20130403140535 dot GC31598 at calimero dot vinschen dot de>
- Reply-to: cygwin-developers at cygwin dot com
On Wed, Apr 03, 2013 at 04:05:35PM +0200, Corinna Vinschen wrote:
>On Apr 3 09:49, Ken Brown wrote:
>> On 4/3/2013 7:41 AM, Corinna Vinschen wrote:
>> >On Apr 2 18:57, Ken Brown wrote:
>> >>How did you figure out that the crash occurs in cmalloc? I tried
>> >>addr2line, but it gave me no information:
>> >>
>> >>$ addr2line -e /bin/cygwin1.dll 1800429F4
>> >>??:?
>> >
>> >Are you sure the stackdump is from the same version of the Cygwin
>> >DLL you're running now?
>>
>> I didn't get a stackdump. I was relying on the following line from
>> the strace output:
>>
>> Process 4928, exception c0000005 at 00000001800429F4
>>
>> I just reproduced that today, with the same address, so there's no
>> question of the DLL version.
>
>Hmm. Did you install the cygwin-debuginfo package? If all else
>fails, try `addr2line -e /usr/lib/debug/usr/bin/cygwin1.dbg'. I get
>
> $ $ addr2line -e /usr/lib/debug/usr/bin/cygwin1.dbg 1800429F4
> /usr/src/debug/cygwin-1.7.18-15/winsup/cygwin/cygheap.cc:298
Is it time to scrap the malloc functions in cygheap and roll them into
the standard malloc? I think modern mallocs allow you to segregate
regions they way we'd want to for cygheap.
cgf