gcov

Code coverage analysis and profiling tool that discovers untested parts of a program.

Also displays a copy of source code annotated with execution frequencies of code segments.

• Generate a coverage report named `file.cpp.gcov`:

gcov {path/to/file.cpp}

• Write individual execution counts for every basic block:

gcov --all-blocks {path/to/file.cpp}

• Write branch frequencies to the output file and print summary information to stdout as a percentage:

gcov --branch-probabilities {path/to/file.cpp}

• Write branch frequencies as the number of branches taken, rather than the percentage:

gcov --branch-counts {path/to/file.cpp}

• Do not create a `gcov` output file:

gcov --no-output {path/to/file.cpp}

• Write file level as well as function level summaries:

gcov --function-summaries {path/to/file.cpp}

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