mirror of https://github.com/CrimsonTome/tldr.git
30 lines
929 B
Markdown
30 lines
929 B
Markdown
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# gcov
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> Code coverage analysis and profiling tool that discovers untested parts of a program.
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> Also displays a copy of source code annotated with execution frequencies of code segments.
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> More information: <https://gcc.gnu.org/onlinedocs/gcc/Invoking-Gcov.html>.
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- Generate a coverage report named `file.cpp.gcov`:
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`gcov {{path/to/file.cpp}}`
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- Write individual execution counts for every basic block:
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`gcov --all-blocks {{path/to/file.cpp}}`
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- Write branch frequencies to the output file and print summary information to `stdout` as a percentage:
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`gcov --branch-probabilities {{path/to/file.cpp}}`
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- Write branch frequencies as the number of branches taken, rather than the percentage:
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`gcov --branch-counts {{path/to/file.cpp}}`
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- Do not create a `gcov` output file:
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`gcov --no-output {{path/to/file.cpp}}`
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- Write file level as well as function level summaries:
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`gcov --function-summaries {{path/to/file.cpp}}`
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