On 13/07/2015 10:56, Claude Frantz wrote:

Hi Claude,
> On 07/12/2015 09:18 PM, John N1ISA wrote:
>
> Hi,
>
>> I am seeing a WSPR-2 segmentation fault running WSJT-X v1.6.0-devel r5717
>> in Linux. I am using a custom Ubuntu 15.04 install. I have run countless
>> WSJT-X v1.6.0 devel versions without any issues for many, many months now.
> In the recent past, I have encountered sporadic segmentation fault, too.
> I'm not sure if this matter is related to WSPR-2.
>
> I'm using 32 bit Fedora 21, all available upgrades installed.
>
> Perhaps, we could start wsjtx under gdb, so that we can request a stack
> backtrace after a failure. I ignore how to handle the treads right. Any
> idea ?
Always running under gdb in case of a crash isn't really necessary. 
Instead you can enable core dumps with whatever your system's core dump 
size limit command, e.g. with bash shell:

  $  ulimit -c unlimited

then a core dump file will get created on an unhandled exception or 
signal. You can get a stack trace retrospectively using gdb like this:

  $ gdb <original-executable> core
  (gdb) bt
  (gdb) ...

This will work with release configuration executables as well although 
the amount of information available in gdb will be limited but a stack 
trace of the current thread is often enough to diagnose a crash.
>
> Best 88 de Claude
73
Bill
G4WJS.

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