Implement SEH (Structured Exception Handling)

[AlexMacocian]

VC++ supports handling terminating exceptions such as memory access violation with a special syntax

__try {
    // Code that might throw an exception
} __except (EXCEPTION_EXECUTE_HANDLER) {
    // Exception handling code
}

We can then retrieve the stacktrace

#include <windows.h>
#include <dbghelp.h>
#include <iostream>

void LogStackTrace() {
    // Initialize stack walking
    HANDLE process = GetCurrentProcess();
    HANDLE thread = GetCurrentThread();

    CONTEXT context = {};
    context.ContextFlags = CONTEXT_FULL;
    RtlCaptureContext(&context);

    STACKFRAME64 stack = {};
    stack.AddrPC.Offset = context.Rip;
    stack.AddrPC.Mode = AddrModeFlat;
    stack.AddrFrame.Offset = context.Rbp;
    stack.AddrFrame.Mode = AddrModeFlat;
    stack.AddrStack.Offset = context.Rsp;
    stack.AddrStack.Mode = AddrModeFlat;

    while (StackWalk64(IMAGE_FILE_MACHINE_AMD64, process, thread, &stack, &context, NULL, SymFunctionTableAccess64, SymGetModuleBase64, NULL)) {
        std::cout << "Address: " << stack.AddrPC.Offset << std::endl;
        // Additional code to resolve symbols
    }
}

Finally, before crashing the process, we could show a MessageBox with the name of the error and we could log the stacktrace somewhere