Korean translation: This document was generated on 15 March using texi2html k. Gcovr provides a utility for managing the use of the GNU gcov utility and generating summarized code coverage .. See for the full manual. gcov is a test coverage program. Use it in concert with GCC You have freedom to copy and modify this GNU Manual, like GNU software. Copies published by.

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Each line of source code is prefixed with the number of times it has been executed; lines that have not been executed are prefixed with ” “. You are commenting using your WordPress. It also requires the object file to be generated with special compilation options.

Gccov Read Edit View history. Lcov supports statement, function, and branch coverage measurement. It also adds overview pages for easy navigation within the file structure. The article speaks solely from the viewpoint of a C programmer working on a Linux PC or similar systems What is coverage?

gcov(1) – Linux man page

Thus we have some tools that can compute the coverage of our test code for us. Any line that was not executed will have in place of the execution count. Coverage summary will be displayed as below when gcov finishes execution:.


This places a restriction that the gcof system should have the manyal directory structure. Notify me of new comments via email. Archived from the original PDF on April 9, In my case project contain a lot of files actually project was not created by myselfi know how to make that project by using make command.

gcov manual – Table of Contents

This will generate the following files. When the code base grows, manual testing fails to meet the requirements and we have to move into automated systems for testing. Now, execute the test code object file. There are two types of coverage analysis that mannual possible. For obvious reasons, it is not practical to manually compute the coverage of a test code.

A block can be a set of simple execution statements or a logical branch. Detailed coverage report will be available in the lib. manuao

lcov(1): graphical GCOV front-end – Linux man page

I am not actively working on this. The line counts can be seen in the first column of the output.

This creates an instrumented executable which contains additional instructions that record the number of times each line of the program is executed. Thanks for this blog on code coverage. Gcov is a source code coverage analysis and statement-by-statement profiling tool.


If a standard filesystem is present, the above method should work. To generate the coverage report, run the following command.

You are commenting using your Twitter account. To illustrate the nanual of gcov, we will consider a very minimal library lib. Gcov generates exact counts of the number of times each statement in a program is executed and annotates source code to add instrumentation.

The ideal test code should logically call all the functions and execute all statements in the blocks.

gcov manual

Free and open-source software portal. Sorry, your blog cannot share posts by email. Each line of executable code contains the number of times the line was executed and the actual source code line number. Each block is marked by a line with the same line number as the last line of the block and the number of branch and calls in the block.