Created by: vTurbine
Current EH prints back trace and calls __builtin_trap() to stop crashed application. clang and gcc uses ud2 as the built-in implementation wich cause to illegal instruction exception. This will emit SIGILL which will be processed by the EH again and produce more prints (not informative in this case). Eventually it will be propagated to the OS and app will exit.
How it looks now:
< some crash happened here >
FATAL ERROR
[error] Expression : <no expression>
[error] Function : handler_base
[error] File : /mnt/repos/xray-16/src/xrCore/xrDebug.cpp
[error] Line : 841
[error] Description : segmentation fault
stack trace:
/mnt/repos/xray-16/build/src/xrCore/xrCore.so(_ZN7xrDebug10GatherInfoEPcjRK13ErrorLocationPKcS5_S5_S5_+0x1c0) [0xb78ebb50]
/mnt/repos/xray-16/build/src/xrCore/xrCore.so(_ZN7xrDebug4FailERbRK13ErrorLocationPKcS5_S5_S5_+0xbf) [0xb78ebcff]
/mnt/repos/xray-16/build/src/xrCore/xrCore.so(+0x3c133) [0xb78ec133]
linux-gate.so.1(__kernel_sigreturn+0) [0xb7ed8ae8]
FATAL ERROR
[error] Expression : <no expression>
[error] Function : handler_base
[error] File : /mnt/repos/xray-16/src/xrCore/xrDebug.cpp
[error] Line : 841
[error] Description : illegal instruction
stack trace:
/mnt/repos/xray-16/build/src/xrCore/xrCore.so(_ZN7xrDebug10GatherInfoEPcjRK13ErrorLocationPKcS5_S5_S5_+0x1c0) [0xb78ebb50]
/mnt/repos/xray-16/build/src/xrCore/xrCore.so(_ZN7xrDebug4FailERbRK13ErrorLocationPKcS5_S5_S5_+0xbf) [0xb78ebcff]
/mnt/repos/xray-16/build/src/xrCore/xrCore.so(+0x3c133) [0xb78ec133]
linux-gate.so.1(__kernel_sigreturn+0) [0xb7ed8ae8]
/mnt/repos/xray-16/build/src/xrCore/xrCore.so(+0x1d790) [0xb78cd790]
/mnt/repos/xray-16/build/src/xrCore/xrCore.so(+0x3c133) [0xb78ec133]
linux-gate.so.1(__kernel_sigreturn+0) [0xb7ed8ae8]
Illegal instruction (core dumped)..and how it will look:
< The same crash happened again >
FATAL ERROR
[error] Expression : <no expression>
[error] Function : handler_base
[error] File : /mnt/repos/xray-16/src/xrCore/xrDebug.cpp
[error] Line : 841
[error] Description : segmentation fault
stack trace:
/mnt/repos/xray-16/build/src/xrCore/xrCore.so(_ZN7xrDebug10GatherInfoEPcjRK13ErrorLocationPKcS5_S5_S5_+0x1c0) [0xb793fb50]
/mnt/repos/xray-16/build/src/xrCore/xrCore.so(_ZN7xrDebug4FailERbRK13ErrorLocationPKcS5_S5_S5_+0xbf) [0xb793fcff]
/mnt/repos/xray-16/build/src/xrCore/xrCore.so(+0x3c1d3) [0xb79401d3]
linux-gate.so.1(__kernel_sigreturn+0) [0xb7f2cae8]
Trace/breakpoint trap (core dumped)