Hi, I have a problem. I want to handle signals like SIGSEGV in non-main threads of C++ program and terminate thread by pthread_exit call. Of course I need all destructors of objects on stack to be called (eg. mutex unlocking). When compiling with -fnon-call-exceptios everything almost works but: In context is saved address of failing instruction, not adress of instruction after the failing one. Thus decrementing of this address in __gxx_personality_v0 sometimes leads to calling of terminate(), because no suitable entry in call-site table (?is it the right name?) is found in .gcc_except_table. It is clearly supposed to be handled by SIGNAL_FRAME_BIT in flagss in struct _Unwind_Context. But this bit is not set in my context. That is why __gxx_personality misses proper handler by one byte, and calls terminate instead. If I put one simple pointer dereference before my failing instruction, decremented address is now inside the range described in call-site table and everything works fine. I am not sure I understand well how the SIGNAL_FRAME_BIT flag is supposed to be set. Shall there be a CIE with "S" augmentation in .eh_frame for signal handler? Threre is not such one in my program. How can I make gcc to create one? Or am I completely wrong? Just for completenes I have tried with gcc 4.1.0 and 4.2.1 on x86_64 (Suse 10.1 and 10.3). Thanks in advance
