sigtrap之后无法在GDB中逐步逐步逐步逐步启动程序
使用mingw gdb，当我在运行时打破程序时（使用在mingw上，我如何使ctrl-c停止程序？），GDB无法从那里捡起。
我唯一能获得的返回式信息是
#0 0x00007fffbfccd881 in ntdll!DbgBreakPoint () from /c/WINDOWS/SYSTEM32/ntdll.dll
#1 0x00007fffbfcf99fb in ntdll!DbgUiRemoteBreakin () from /c/WINDOWS/SYSTEM32/ntdll.dll
#2 0x00007fffbd473034 in KERNEL32!BaseThreadInitThunk ()
from /c/WINDOWS/System32/KERNEL32.DLL
#3 0x00007fffbfca1431 in ntdll!RtlUserThreadStart () from /c/WINDOWS/SYSTEM32/ntdll.dll
#4 0x0000000000000000 in ?? ()
，如果我尝试逐步完成我获得的程序
Single stepping until exit from function ntdll!DbgUiRemoteBreakin,
which has no line number information.
，并且程序可以完成。我能够正常（断点之后）踏上
Using mingw gdb, when I to break the program as it's running (using the method from In GDB on MinGW, how do I make Ctrl-C stop the program?), gdb fails to pick up from there.
The only backtrace information I can get is
#0 0x00007fffbfccd881 in ntdll!DbgBreakPoint () from /c/WINDOWS/SYSTEM32/ntdll.dll
#1 0x00007fffbfcf99fb in ntdll!DbgUiRemoteBreakin () from /c/WINDOWS/SYSTEM32/ntdll.dll
#2 0x00007fffbd473034 in KERNEL32!BaseThreadInitThunk ()
from /c/WINDOWS/System32/KERNEL32.DLL
#3 0x00007fffbfca1431 in ntdll!RtlUserThreadStart () from /c/WINDOWS/SYSTEM32/ntdll.dll
#4 0x0000000000000000 in ?? ()
and if I try to step through the program I get
Single stepping until exit from function ntdll!DbgUiRemoteBreakin,
which has no line number information.
and the program runs to completion. I am able to step through normally (after a breakpoint) but I can't seem to get the debugger to recover from a SIGTRAP
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debugbreak breaks 创建一个新线程在目标过程，然后是通过断点例外来向调试器发出信号，以暂停执行。
您可以使用
Info Threads列出所有可用线程，然后通过thread your_thread_number切换到另一个线程。DebugBreakProcess creates a new thread in the target process, which is then signalling the debugger via a breakpoint exception to pause the execution.
You can list all available threads with
info threads, and then switch to another thread viathread YOUR_THREAD_NUMBER.