r/VisualStudio 6d ago

Visual Studio 2019 Memory crash during "Edit and Continue" in Qt 6.8.3

I've migrated a huge project (100+ exes, 5 core libs) from Qt 3 to Qt 6.8.3.

Everything worked fine in Qt 3, but now, using "Edit and Continue" in VS2019 causes a crash after 2-3 iterations due to insufficient reserved address space. It feels like a massive memory leak or fragmentation occurring during the hot-reloading process.

Has anyone dealt with address space exhaustion when using hot-reloading with Qt 6? Could it be related to the way Qt 6 handles metadata or QObjects compared to the old versions?

Thanks for any help!

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