Knowledge Base

Code Coverage data missing   ________________________________________________________________________ Applicable Environment ________________________________________________________________________ Topic: Code coverage SDP: 7.1.0 Target: AArch64, x86_64 ________________________________________________________________________ Issue ________________________________________________________________________ If you have multiple source files, building the project with just one qcc call ends up with Code Coverage data of just one file, i.e. just one gcno and gcda file is created, which can result in missing code coverage data. # qcc -Vgcc_ntox86_64 -ftest-coverage -fprofile-arcs file1.c file2.c file3.c -o project ________________________________________________________________________ Solution ________________________________________________________________________ If Code Coverage data doesn't appear in the IDE or with gcov. Make sure you have compiled any c-file with qcc instead of one qcc command with all c-files as arguments For example: You project has 3 c-files: file1.c, file2.c and file3.c. Building the project with these steps results in working code coverage: # qcc -Vgcc_ntox86_64 -c -ftest-coverage -fprofile-arcs file1.c -o file1.o # qcc -Vgcc_ntox86_64 -c -ftest-coverage -fprofile-arcs file2.c -o file2.o # qcc -Vgcc_ntox86_64 -c -ftest-coverage -fprofile-arcs file3.c -o file3.o # qcc -Vgcc_ntox86_64 -ftest-coverage -fprofile-arcs file1.o file2.o file3.o -o project This will create 3 header files during build time on the host machine: file1.gcno file2.gcno file3.gcno Running the program on the target creates (set GCOV_PREFIX_STRIP and GCOV_PREFIX): file1.gcda file2.gcda file3.gcda You should see Code Coverage results in the IDE or with gcov-dump from command line. ________________________________________________________________________ NOTE: This entry has been validated against the SDP version listed above. Use caution when considering this advice for any other SDP version. For supported releases, please reach out to QNX Technical Support if you have any questions/concerns. ________________________________________________________________________ Related Attachments  None Found

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