Given the following content in Options -> Debugger -> GDB -> Additional Startup Commands:
Starting a debug session I get two modal dialog prompts with the error:
The issue seems to be new in 4.15 (I don't see it in 4.14.2).
|For Gerrit Dashboard: QTCREATORBUG-25666|
|347368,2||Debugger: Don't pass comments as custom commands to backends||master||qt-creator/qt-creator||Status: MERGED||+2||0|