You can take over these functions by installing a message handler using qInstallMsgHandler (). If the QT_FATAL_WARNINGS environment variable is set, qWarning () exits after printing the warning message. This makes it easy to obtain a backtrace in the debugger. Both qDebug ().
6/27/2019 · (lldb) env QT_ FATAL_WARNINGS =1 (lldb) run Process 19523 launched: ‘ /Users/michael/ github /bitcoin/src/qt/bitcoin-qt ‘ (x86_64) 2019-06-27 15:23:04.327755+0800 bitcoin-qt[19523:550417] MessageTracer: Falling back to default whitelist Process 19523 stopped * thread # 21, name = ‘bitcoin-httpworker.0’, stop reason = signal SIGABRT frame # 0: 0x00007fff593ec2c6.
QT_FATAL_WARNINGS The hammer QT_FATAL_WARNINGS somewhat goes against the idea of categorized logging. It should be possible to make warnings fatal per category, to be able to e.g. make only Qt warnings fatal.
Yes: set the QT_FATAL_WARNINGS environment variable to a non-zero value. You can do this during development in Qt Creator by going to the Projects pane, click Run, then under Run Environment click Details, then click Add.
Debugging Techniques | Qt 5 .15, What’s New in Qt 5.6.0: Logging to syslog and journald | ICS, What’s New in Qt 5.6.0: Logging to syslog and journald | ICS, Debugging Techniques | Qt 5 .15, QT_ FATAL_WARNINGS = 1. in the program environment during debugging. This causes the program to crash, giving you a good backtrace, especially if you run the code in the debugger. If you do not want a crash, see the answer above.
Namely, that QT_ FATAL_WARNINGS =1 is not a perfect solution, because other warnings which were not important (the task associated was not impeded), but are annoying to fix (https://stackoverflow.com/questions/46616685/qt-network-ssl-qsslsocket-cannot-resolve-sslv2-client-method – No solution!) are now halting my program before I can actually run the code which is.
If no message handler has been installed, the message is printed to stderr. Under Windows, the message is sent to the debugger. On QNX the message is sent to slogger2. This function does nothing if QT_NO_WARNING_OUTPUT was defined during compilation it exits if at the nth warning corresponding to the counter in environment variable QT_FATAL_WARNINGS. That is, if the environment variable.
I added QT_FATAL_WARNINGS in the main thread (The code looks like this: qWarning(QT_FATAL_WARNINGS ,1)) . And runnig in the debugger Here is the error code printed in debugger mode. This isn’t what I wrote. I said that you should set it as an environment variable. Look in your creator project configuration pane and add the variable and the value to the build/run environment.
