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I want to test code coverage of my tests over library L.

Let L::foo() be a function in L that I do not use in my tests.

Therefore the object code of foo() is removed/opted out I think by the linker and is not be part of the test application.

So I end up with higher code coverage and cannot see that foo() is not covered.

I think there is a linker flag that forces linker to include even unused code, or perhaps I can do something else while running code coverage. Anyone knows how to do this?

I am using GCC, gcov on Linux.

I want to test code coverage of my tests over library L.

Let L::foo() be a function in L that I do not use in my tests.

Therefore the object code of foo() is removed/opted out I think by the linker and is not be part of the test application.

So I end up with higher code coverage and cannot see that foo() is not covered.

I think there is a linker flag that forces linker to include even unused code, or perhaps I can do something else while running code coverage. Anyone knows how to do this?

I am using GCC, gcov on Linux.

  • c++
  • linux
  • gcov
  • linker-flags
Share Improve this question edited Feb 25 at 12:43 dwto asked Feb 24 at 23:36 dwtodwto 8054 silver badges11 bronze badges
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In general you need to remove -Wl,--gc-sections and add -fkeep-static-functions in your coverage build.

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