Why doesn't gcov report any lines being covered by my unit tests?

Question

I am using Xcode 3.2 on 10.6, with the shipped version of gcov and default GCC compiler (both version 4.2.1). I have created a dependent Cocoa unit test bundle which is injected

Answer 1

I was getting 0 coverage when *.gcno files for static library was overwritten by those for shared library.