https://bugs.kde.org/show_bug.cgi?id=425841
Bug ID: 425841
Summary: SIGPIPE, then a crash when the first event loop starts
at least 60 seconds after KDevelop launch
Product: kdevelop
Version: git master
Platform: Compiled Sources
OS: Linux
Status: REPORTED
Severity: crash
Priority: NOR
Component: general
Assignee: kdevelop-bugs-n...@kde.org
Reporter: igor...@gmail.com
Target Milestone: ---
Created attachment 131205
--> https://bugs.kde.org/attachment.cgi?id=131205&action=edit
KDevelop Frame Stack at SIGPIPE
SUMMARY
I have encountered this SIGPIPE followed by a crash many times while I debugged
KDevelop. I have to hastily *Continue application execution* when breakpoints
are hit during startup in order to circumvent the crash. But sometimes the
crash just happens every other time (unless the "Session Crashed" dialog starts
an event loop early). One temporary way out of this regular crashing is to
speed up KDevelop startup by manually removing all [Working File Sets] entries
from the affected session's sessionrc file.
STEPS TO REPRODUCE
1. Open KDevelop project in KDevelop and build it with Debug build type.
2. Place a breakpoint in some function called during startup, for example at
the beginning of BreakpointModel::scheduleSave().
3. Debug Launch KDevelop.
4. When the breakpoint is hit, wait for some time before continuing execution
(60 seconds is more than enough).
5. Disable the breakpoint or continue execution without waiting at subsequent
breakpoint hits.
OBSERVED RESULT
The "*** Program received signal SIGPIPE (Broken pipe) ***" line appears in
Debug tool view. The contents of the Frame Stack at this point is attached to
the bug. When I press the *Continue application execution* button, KDevelop
crashes with the following output in Debug tool view right after the SIGPIPE
line quoted above (only the PID number varies, the rest of the output is
constant):
ICE default IO error handler doing an exit(), pid = 610216, errno = 32
register count: 0, destroy count: 0
*** Exited with return code: 01 ***
EXPECTED RESULT
The debugged KDevelop instance doesn't receive SIGPIPE signal and doesn't
crash.
SOFTWARE/OS VERSIONS
Manjaro GNU/Linux, Xfce
KDE Frameworks Version: 5.73.0
Qt Version: 5.15.0
ADDITIONAL INFORMATION
It appears that this is a general X11 (possibly Qt-specific) issue. A minimal
reproduciple example and a fix are available at
https://stackoverflow.com/questions/56686603/how-to-avoid-sigpipe-due-to-a-timeout-when-debugging-an-x11-program.
I am going to create a Merge Request with this fix soon.
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