topic Re:Version mismatch between Gcov and DPC++ while attempting to generate a code coverage report in Intel® oneAPI DPC++/C++ Compiler

Version mismatch between Gcov and DPC++ while attempting to generate a code coverage report

Paavan_Joshi — Wed, 30 Nov 2022 09:58:41 GMT

The procedures taken to generate code coverage for dpcpp.

- Updated Makefile and included gcov-specific parameters for compiling individual cpp files (-fPIC -fprofile-arcs ftest-coverage)

- It produced .gcno files.

- Executable code produced .gcda files for individual code files.

- The gcov command is required to provide a code coverage report. ->gcov file.cpp main.cpp

- error appears during this :-

main.gcno:version '408*', prefer 'A94*'

make: *** [Makefile:99: gcov] Segmentation fault (core dump)

Re:Version mismatch between Gcov and DPC++ while attempting to generate a code coverage report

VidyalathaB_Intel — Thu, 01 Dec 2022 10:59:48 GMT

Hi Paavan,

Thanks for reaching out to us.

Could you please provide us with a sample reproducer and steps to reproduce the issue so that we can check it from our end to proceed further in this case?

Please do let us know the dpcpp version you are working with along with your OS details.

Regards,

Vidya.

Re: Version mismatch between Gcov and DPC++ while attempting to generate a code coverage report

Paavan_Joshi — Thu, 01 Dec 2022 12:37:56 GMT

OS and DPC++ version details.

$ dpcpp -v
Intel(R) oneAPI DPC++/C++ Compiler 2022.1.0 (2022.1.0.20220316)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /home/tester/intel/oneapi/compiler/2022.1.0/linux/bin-llvm
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/8
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/9
Selected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/9
Candidate multilib: .;@m64
Candidate multilib: 32;@m32
Candidate multilib: x32;@mx32
Selected multilib: .;@m64

$ cat /etc/os-release
NAME="Ubuntu"
VERSION="20.04.5 LTS (Focal Fossa)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 20.04.5 LTS"
VERSION_ID="20.04"
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
VERSION_CODENAME=focal
UBUNTU_CODENAME=focal

Re:Version mismatch between Gcov and DPC++ while attempting to generate a code coverage report

VidyalathaB_Intel — Fri, 02 Dec 2022 09:18:57 GMT

Hi Paavan,

Thanks for sharing the details.

Could you please provide us with the source code if possible or any sample reproducer code along with the steps to reproduce the error so that we can test it from our end?

Regards,

Vidya.

Re: Version mismatch between Gcov and DPC++ while attempting to generate a code coverage report

Paavan_Joshi — Thu, 08 Dec 2022 06:54:52 GMT

Hi Vidya,

Sorry for the late response.

Hear is the sample code and required detail to setup and run.

main.cpp

#include <CL/sycl.hpp> #include <iostream> using namespace sycl; const std::string secret { "Ifmmp-!xpsme\"\012J(n!tpssz-!Ebwf/!" "J(n!bgsbje!J!dbo(u!ep!uibu/!.!IBM\01"}; const auto sz = secret.size(); int main() { queue Q; char*result = malloc_shared<char>(sz, Q); std::memcpy(result,secret.data(),sz); Q.parallel_for(sz,[=](auto&i) { result[i] -= 1; }).wait(); std::cout << result << "\n"; return 0; }

dpc_common.hpp

#ifndef _DP_HPP #define _DP_HPP #include <stdlib.h> #include <exception> #include <CL/sycl.hpp> namespace dpc_common { static auto exception_handler = [](cl::sycl::exception_list eList) { for (std::exception_ptr const &e : eList) { try { std::rethrow_exception(e); } catch (std::exception const &e) { #if _DEBUG std::cout << "Failure" << std::endl; #endif std::terminate(); } } }; class TimeInterval { public: TimeInterval() : start_(std::chrono::steady_clock::now()) {} double Elapsed() { auto now = std::chrono::steady_clock::now(); return std::chrono::duration_cast<Duration>(now - start_).count(); } private: using Duration = std::chrono::duration<double>; std::chrono::steady_clock::time_point start_; }; }; #endif

makefile

CC = dpcpp CFLAG = -fPIC -fprofile-arcs -ftest-coverage RM = rm -rf help: ## Makefile help @awk 'BEGIN {FS = ":.*?## "} /^[a-zA-Z_-]+:.*?## / {printf "\033[36m%-30s\033[0m %s\n", $$1, $$2}' $(MAKEFILE_LIST) main.o: main.cpp $(CC) $(CFLAG) -c -Wall main.cpp build: main.o ## Make build $(CC) $(CFLAG) -c -Wall main.cpp $(CC) $(CFLAG) -o main main.o coverage: ## Run code coverage gcov main.cpp lcov-report: coverage ## Generate lcov report mkdir lcov-report lcov --capture --directory . --output-file lcov-report/coverage.info genhtml lcov-report/coverage.info --output-directory lcov-report gcovr-report: coverage ## Generate gcovr report mkdir gcovr-report gcovr --root . --html --html-details --output gcovr-report/coverage.html deps: ## Install dependences sudo apt-get install lcov pip install gcovr clean: ## Clean all generate files $(RM) main *.o *.so *.gcno *.gcda *.gcov lcov-report gcovr-report

Commands with its output to build, run and generate code coverage report :-

- ls (before code compile)

dpc_common.hpp main.cpp makefile

- make build

- ls

dpc_common.hpp main main.cpp main.gcno main.o makefile

- main

- Gives respected code op

- ls

dpc_common.hpp main main.cpp main.gcda main.gcno main.o makefile

- make coverage

gcno main.cpp

main.gcno:version '408*', prefer 'B13*'

make: *** [Makefile:17: coverage] Segmentation fault (core dump)

Thanks,

Paavan

Re: Version mismatch between Gcov and DPC++ while attempting to generate a code coverage report

VidyalathaB_Intel — Thu, 29 Dec 2022 11:54:33 GMT

Hi Paavan ,

Thanks for your providing us with the details.

We use Clang based option sets for code coverage

Please refer to the below link for more details

https://clang.llvm.org/docs/SourceBasedCodeCoverage.html

I've modified the makefile with the options available in Clang.

CC = dpcpp CFLAG = -fprofile-instr-generate -fcoverage-mapping RM = rm -rf export LLVM__ROOT = /opt/intel/oneapi/compiler/2022.2.1/linux/bin-llvm help: ## Makefile help @awk 'BEGIN {FS = ":.*?## "} /^[a-zA-Z_-]+:.*?## / {printf "\033[36m%-30s\033[0m %s\n", $$1, $$2}' $(MAKEFILE_LIST) main.o: main.cpp $(CC) $(CFLAG) -c -Wall main.cpp build: main.o ## Make build $(CC) $(CFLAG) -c -Wall main.cpp $(CC) $(CFLAG) -o main main.o coverage: ## Run code coverage LLVM_PROFILE_FILE="main.profraw" ./main #llvm-cov: coverage ## Generate lcov report $(LLVM__ROOT)/llvm-profdata merge -sparse main.profraw -o main.profdata #llvm-profdata: coverage ## Generate gcovr report $(LLVM__ROOT)/llvm-cov report ./main -instr-profile=main.profdata #deps: ## Install dependences # sudo apt-get install lcov # pip install gcovr clean: ## Clean all generate files $(RM) main *.o *.profdata *.profraw

Both llvm-cov and llvm-profdata merge are in our builds and you can find them under the following location /opt/intel/oneapi/compiler/2022.2.1/linux/bin-llvm/

Steps followed:

> make build

> make coverage

Please try it and let us know if you have any issues.

Regards,

Vidya.

Re: Version mismatch between Gcov and DPC++ while attempting to generate a code coverage report

VidyalathaB_Intel — Wed, 21 Dec 2022 06:36:29 GMT

Hi @Paavan_Joshi ,

As we haven't heard back from you, could you please provide us with an update regarding the issue?

Regards,

Vidya.

Re: Version mismatch between Gcov and DPC++ while attempting to generate a code coverage report

Paavan_Joshi — Thu, 22 Dec 2022 06:19:01 GMT

Hello, Vidya.

I tested this method and it works good, but we wrote some test cases using the Gtest framework, thus we need to use gcove to generate coverage reports, or is there another way to generate coverage reports by modifying the cmake file?

Thanks,

Paavan

Re: Version mismatch between Gcov and DPC++ while attempting to generate a code coverage report

VidyalathaB_Intel — Thu, 29 Dec 2022 12:11:52 GMT

Hi Paavan,

>>we wrote some test cases using the Gtest framework, thus we need to use gcove to generate coverage reports, or is there another way to generate coverage reports by modifying the cmake file?

Could you please let us know if you are facing any issues with the provided options with respect to clang in the makefile while generating code coverage reports for the application in which you have used Gtest framework?

Please elaborate more on your issue so that it would help us better in understanding the issue.

Regards,

Vidya.

Re:Version mismatch between Gcov and DPC++ while attempting to generate a code coverage report

VidyalathaB_Intel — Thu, 05 Jan 2023 16:53:49 GMT

Hi Paavan,

As we haven't heard back from you, could you please provide us with an update regarding the issue?

Regards,

Vidya.

Re: Version mismatch between Gcov and DPC++ while attempting to generate a code coverage report

Paavan_Joshi — Fri, 06 Jan 2023 08:06:04 GMT

Hi Vidya,

Sorry for the delayed response, however I tried the same method with my test cases and it provided me with a coverage report.
So we can put this matter to rest.

And thank you for your help.

Thanks,

Paavan

Re:Version mismatch between Gcov and DPC++ while attempting to generate a code coverage report

VidyalathaB_Intel — Mon, 09 Jan 2023 03:37:51 GMT

Hi Paavan,

>>So we can put this matter to rest.

Thanks for the confirmation!

As the issue is addressed we are closing this thread. Please post a new question if you need any additional assistance from Intel as this thread will no longer be monitored.

Regards,

Vidya.