gcda1gcno
gcda1gcno is not an official standalone file format. It refers to the pair of coverage data files produced by GCC’s code coverage instrumentation: files with the extensions .gcda and .gcno. These files are used by coverage tools such as gcov, gcovr, and lcov to compute and report which parts of a program were executed during tests.
Generation and purpose: The compiler emits .gcno files when you build with coverage instrumentation (for example
Naming and location: Both files share the same base name as the source or object file and
Usage and reporting: To generate a report, run a coverage tool such as gcov on the relevant
Notes: There is no standard single file named "gcda1gcno"; the conventional files are <name>.gcno and <name>.gcda.