Hello, I'm stuck building and running the tests for gcc, in particular the run-tests (not compile tests) for just one test case I added myself. I found an issue in libstdc++ (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105387) and now want to write a test for it to prove that the patch I created works and that the libstdc++ code breaks without the patch. I added the test application into libstdc++-v3/testsuite/abi/. Now how do I run this very application and via the test suite and how do I confirm that it successfully ran? I've been looking into the libstdc++ test doc page: libstdc++-v3/doc/html/manual/test.html in the repository, but it is still not clear to me how to do the aforementioned task. After successfully building the entire gcc, I stayed in the build directory and tried this: make check-c++ RUNTESTFLAGS="libstdc++.exp". But all I got was a bunch of output without any of the files in libstdc++-v3/testsuite/abi/ listed. How do I run the tests (with stdout output, because using gdb is another story) for a particular .cc file in any of the directories in libstdc++-v3/testsuite/ ? Thanks, Jakob