1. Open qtcreator.qbs (maybe the project must be build, I don't know)
2. Type "icore"
   ==> The very first entry is "icore.cpp.o"

For some reason I cannot reproduce this with a "C++ Application" from the wizard ("main.cpp.o" does not show up).

Most of the time the source files are more relevant than object files.

Suggestion: Either remove the object files from the list completely or at least reduce their priority so they do not show up as the very first entry.