Debugging asserts in Qt Creator

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心在旅途
心在旅途 2021-01-03 21:17

When I hit a normal assert statement while debugging with Visual Studio I get the option to break into the debugger so I can see the entire stack trace and the local variabl

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  • 2021-01-03 21:44

    You can install a handler for the messages/warnings that Qt emits, and do your own processing of them. See the documentation for qInstallMsgHandler and the example they give there. It should be easy to insert a break in a custom message handler (or indeed, just assert on your own at that point). The one small drawback is that you'll be a bit further on down the stack than where the error actually occurred, but it is a simple matter to just step up the stack until you are at the proper frame.

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  • 2021-01-03 21:51

    It's possible. I have coded a BreakInDebugger function by hand and an assert macro that calls the function.

    e.g: #define MyAssert(X) (BreakInDebugger();Q_ASSERT(X))

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  • 2021-01-03 22:04

    It's possible. Somehow the feature stopped working for me, but basically what you want is to stop on qFatal(). To ensure this happens, in qt Creator go to Tools -> Options -> Debugger -> GDB and select "Stop when a qFatal is issued"

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