Cannot set breakpoints in template code. Attempting to do so while debugging causes Qt Creator to hang.

I am unable to set breakpoints in template code. In non-template code, breakpoints work as expected. I am able to step through template code as normal.

Attempting to set a breakpoint in template code while debugging causes Qt Creator to issue an Execution Error, e.g.: "Cannot continue debugged process: Warning: Cannot insert breakpoint 13. Error accessing memory addres 0x95ab0074: Input/output error."

Setting (or forgetting to remove!) a non-disabled breakpoint in template code before starting a debugging session makes Qt Creator issue a warning, "Cannot insert breakpoint 12. Error accessing memory address 0x0. Input/output error," after which the requested debug session does not start, but cannot be killed without re-starting Qt Creator.

My template code is instantiated in the same dll as the non-template code it is called from.