[21.1.1] Fix unwind from signal handler - #2
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Change taken from: ClickHouse/libunwind@ba533a7 In case of this is frame of signal handler, the IP should be incremented, because the IP saved in the signal handler points to first non-executed instruction, while FDE/CIE expects IP to be after the first non-executed instruction. This can cause SIGSEGV, since our stack tracing code involves libunwind via signal handlers.
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Change taken from: ClickHouse/libunwind@ba533a7
In case of this is frame of signal handler, the IP should be incremented, because the IP saved in the signal handler points to first non-executed instruction, while FDE/CIE expects IP to be after the first non-executed instruction.
This can cause SIGSEGV, since our stack tracing code involves libunwind via signal handlers.