[vbox-dev] debug version of VirtualBox coredumps

[Frank Mehnert]

Hi Tomas,

On Sunday 22 May 2016 12:37:48 Tomas Hurka wrote:
> I am trying to run debug version of VirtualBox with logging enabled and
> VirtualBox (current version compiled from sources) coredumps. I am using
> the following env. properties to enable logging: export VBOX_LOG=main.e.l.f
> export VBOX_LOG_FLAGS="time tid thread"
> export VBOX_LOG_DEST=dir=/tmp/vbox
> 
> VirtualBox crashes while starting with the following back-trace:
> [...]
>
> I found out that the crash is caused by some strange formatting used at
> VirtualBoxClientImpl.cpp:147 (frame #16). There is the following line:
> LogFlowThisFunc(("rc=%hrc\n", rc));
> There are similar usages of LogFlowThisFunc, but all use "rc=%Rrc\n”, so I
> replaced above line with: LogFlowThisFunc(("rc=%Rrc\n", rc));
> and this fixed the crash for me.
> 
> Is this a known problem?

thank you! Your analysis is correct and the format specifier was wrong
(very recent regression). Fixed (together with another bogus format
specifier) in

  https://www.virtualbox.org/changeset/61117/vbox

Kind regards,

Frank
-- 
Dr.-Ing. Frank Mehnert | Software Development Director, VirtualBox
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