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  1. Qt
  2. QTBUG-76337

[REG 5.12-5.13] CMake release builds link to Qt debug LIBs

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    • Platform/s:
      Windows
    • Commits:
      44602224bfae7bea08e5883768cfeef6629ac503 (qt/qtbase/5.13)

      Description

      With Qt 5.13.0 RC2, CMake-based projects seem to link to the debug version of certain Qt LIB files also when building in release. This triggers the following run-time error:

      Debug Assertion Failed!
      
      Program: C:\Dev\TestProject\Release\MyApp.exe
      File: minkernel\crts\ucrt\src\appcrt\heap\debug_heap.cpp
      Line: 904
      
      Expression: _CrtIsValidHeapPointer(block)
      

      The mis-linking seem to be triggered by usage of static Qt libraries like ActiveQt.

      Reproducer project: https://github.com/forderud/Qt-CMake-HelloWorld/tree/5.13-cmake . The reproducer will link to Qt5AxBased.lib Qt5Widgetsd.lib Qt5Guid.lib Qt5Cored.lib also when building in release.

      I unfortunately don't know exactly when this regression was introduced, but it must have been sometime after 5.12.

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              Assignee:
              andysh Andy Shaw
              Reporter:
              forderud Fredrik Orderud
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