Cannot add custom gdb (MinGW)

To reproduce:

• Installed debugger is "extracted from Mingw32-kit"

• In settings dialog, click on debugger, note: SOFT ASSERT: "sitem" in file .\debuggeritemmodel.cpp, line 150

• Add new debugger, choose path, point to gdb from MinGW 64bit bit

• Go to some MinGW kit, select that debugger

• Select "Attach to running process", select that kit, Press "Attach"

Message box: Unable to create a debugger engine of the type 'No engine'

and asserts:

SOFT ASSERT: "d->m_engine" in file .\debuggerrunner.cpp, line 174
SOFT ASSERT: "d->m_engine" in file .\debuggerrunner.cpp, line 191

• Shake fists, quit creator, restart:

Note warnings:

Unknown debugger id {48ba7085-effa-4fda-a4d9-6478f472fc31} in kit Qt 5.1.2 (qt-m
ingw64)

• Open tools dialog, find that new debugger is gone.