Linux: Add a crash handler providing a backtrace for debug builds.
Use case: You're working with a debug version of Qt Creator and you're interested in getting a backtrace displayed as soon as Qt Creator crashes without searching for the core file, starting your debugger, ... Once a 'serious signal' (currently SIGILL, SIGFPE, SIGSEGV, SIGBUS, SIGPIPE) is delivered, a popup displays the following debug information: - Qt Creator version (same as in the about dialog) - Kernel version (uname -a) - GNU/Linux Distribution (/etc/lsb-release) - Backtrace (by gdb) Please note that this crash handler is built and used only in debug mode on GNU/Linux. It's solely meant as a convenience tool for the developer. In contrast to the breakpad integration, this crash handler operates 'offline'. There is no network i/o involved. Change-Id: Idcfb1bf1ad68942615ecfe0dffc0d03154455049 Reviewed-by: Christian Kandeler <firstname.lastname@example.org> Reviewed-by: hjk <email@example.com>
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