Qt mingw release版异常结束 crash信息捕捉和跟踪(含测试代码)

# Qt程序crash信息捕捉和跟踪(mingw) 1. 项目配置 在.pro文件中添加： QMAKE_CXXFLAGS_RELEASE = $$QMAKE_CXXFLAGS_RELEASE_WITH_DEBUGINFO QMAKE_CFLAGS_RELEASE = $$QMAKE_CLAGS_RELEASE_WITH_DEBUGINFO QMAKE_LFLAGS_RELEASE = $$QMAKE_LFLAGS_RELEASE_WITH_DEBUGINFO 2. 修改代码支持异常搜集 ``` #ifdef Q_OS_WIN long __stdcall callback(_EXCEPTION_POINTERS* excp) { CCrashStack crashStack(excp); QString sCrashInfo = crashStack.GetExceptionInfo(); TCHAR my_documents[MAX_PATH]; SHGetFolderPath(NULL, CSIDL_DESKTOP, NULL, SHGFP_TYPE_CURRENT, my_documents); QString file_path = QString::fromWCharArray(my_documents); QDir *folder_path = new QDir; bool exist = folder_path->exists(file_path.append("\\MyApp")); if(!exist) { folder_path->mkdir(file_path); } delete folder_path; folder_path = nullptr; QString sFileName = file_path + "\\crash.log"; QFile file(sFileName); if (file.open(QIODevice::WriteOnly|QIODevice::Truncate)) { file.write(sCrashInfo.toUtf8()); file.close(); } return EXCEPTION_EXECUTE_HANDLER; } #endif int main(int argc, char *argv[]) { #ifdef Q_OS_WIN SetUnhandledExceptionFilter(callback); #endif QApplication a(argc, argv); MainWindow w; w.show(); QString *p = NULL; p->clear(); return a.exec(); } ``` 3. 生成汇编信息 使用cmd命令 "objdump -S app.exe > app.asm" 生成汇编信息文件 4. 定位异常 查看crash.log里的 "Exception Addr: 004021D0" 在app.asm中查找相应地址 5. 缺点 程序文件中包含了调试信息和源代码信息，用户可以查看到。