gcov

问题 I have C/C++ code coverage setup with gcov for several files in the project. The executables are being run in parallel. This results in some shared piece of code to be run in parallel. I am getting corrupt .da files or zero sized .da files. Is this a problem on parallel run? Because two or more executable instance is trying to write on the same .da file for writing the coverage count for each statement in execution? If so, is there any workaround? Gcov version being used is 1.5 回答1: I had a

问题 I am using gcov for analyzing coverage of .c file. on compilation it is generation .gcna but on execution it is not generating gcda file. I already applied -fprofile-arcs -ftest-coverage flags in my run.sh script. And using library -lgcov -coverage . I am running it on arm compiled environment 来源： https://stackoverflow.com/questions/29389053/gcov-is-not-generating-gcda-file

问题 I am using gcov for analyzing coverage of .c file. on compilation it is generation .gcna but on execution it is not generating gcda file. I already applied -fprofile-arcs -ftest-coverage flags in my run.sh script. And using library -lgcov -coverage . I am running it on arm compiled environment 来源： https://stackoverflow.com/questions/29389053/gcov-is-not-generating-gcda-file

问题 I'm trying to understand the output of the gcov tool. Running it with -a options makes sense, and want to understand the block coverage options. Unfortunately it's hard to make sense of what the blocks do and why they aren't taken. Below is the output. I have run add function in my calculator program once. I have no clue why it shows block0. -: 0:Source:calculator.c -: 0:Graph:calculator.gcno -: 0:Data:calculator.gcda -: 0:Runs:1 -: 0:Programs:1 -: 1:#include "calculator.h" -: 2:#include

问题 By condition coverage, I mean like in the definition here. I didn't find such option in the documentation here. An option that gives me relevant statistics which I can parse easily condition coverage is also fine - but I can't find one. 来源： https://stackoverflow.com/questions/48260434/is-it-possible-to-check-condition-coverage-with-gcov

问题 I am running gcov to measure coverage but I get "has arcs from exit block" message for each of the functions I use in the c code. Is there any problem with this message? Should I ignore them? 回答1: This can mean that your gcno file has been generated with newer/different version of gcc compiler. See if at the beginning you have also warning like 'version '404*', prefer '402*' If yes, solution below: Check if g++ --version and gcov --version give you the same results. If not, update your tools

来源： https://stackoverflow.com/questions/37978016/cmake-gcov-c-creating-wrong-gcno-files

来源： https://stackoverflow.com/questions/56710598/fprofile-dir-tag-in-gcov-utility

问题 I'm doing this in a makefile and it results on the first run creating the .gcda files in that dir; but as soon as i do the second, if find that the executable is almost as slow (and this is surely related), is still writing new files to the dir after compiled. From my understanding this shouldn't occur. Removing -fprofile-arcs (or -lgcov for that matter) makes the second compile complain about missing symbols. What amd i missing? I make clean in between both of these executions btw. I also

问题 I developed a simple example to test gcovr and gcov: #include <iostream> int main (int argc, const char * argv[]) { std::cout << argc << std::endl; if(argc == 1) { int y = 1; std::cout << "Argc > 1" << std::endl; } if(argc == 2) std::cout << "Argc > 2" << std::endl; if(argc == 3) { std::cout << "Argc > 3" << std::endl; } int i = 34; i = i * i; return 0; } And a script for coverage report generation: #! /bin/bash rm -rf build-run mkdir build-run cd build-run g++ -O6 -DDEBUG=0 --coverage -ftest