Just look around

本文探讨了当个人对未来感到迷茫时如何寻找方向的方法。建议从周围环境中获取灵感,并主动寻求帮助来找到解决问题的答案。

Some times, you will be not clearly know about what to do next. Just look around and ask for some help. The answer is just on the way.

If so, just execute both commands and retry the installation as mentioned above. You can now use valgrind as normal. Note: in case of failures during the build, make sure you have the latest Xcode/CLI tools installed. Update Any brew upgrade will now correctly rebuild the latest LouisBrunner/valgrind instead of the upstream one (which doesn't support the latest macOS versions). brew upgrade --fetch-HEAD LouisBrunner/valgrind/valgrind Tests Linux (Ubuntu 24.04) These errors seem to come from the CI environment itself (as they show with or without my changes). == 857 tests, 20 stderr failures, 1 stdout failure, 0 stderrB failures, 0 stdoutB failures, 0 post failures == none/tests/fdleak_cmsg (stderr) none/tests/fdleak_cmsg_supp (stderr) none/tests/fdleak_cmsg_xml (stderr) none/tests/fdleak_creat (stderr) none/tests/fdleak_creat_sup (stderr) none/tests/fdleak_creat_xml (stderr) none/tests/fdleak_dup (stderr) none/tests/fdleak_dup2 (stderr) none/tests/fdleak_dup2_xml (stderr) none/tests/fdleak_dup_xml (stderr) none/tests/fdleak_fcntl (stderr) none/tests/fdleak_fcntl_xml (stderr) none/tests/fdleak_ipv4 (stderr) none/tests/fdleak_open (stderr) none/tests/fdleak_pipe (stderr) none/tests/fdleak_socketpair (stderr) none/tests/linux/getdents_filter (stdout) none/tests/rlimit64_nofile (stderr) none/tests/rlimit_nofile (stderr) none/tests/track_high (stderr) none/tests/track_yes (stderr) should be (according to the official Fedora x86_64 builds) == 835 tests, 4 stderr failures, 0 stdout failures, 0 stderrB failures, 0 stdoutB failures, 0 post failures == memcheck/tests/descr_belowsp (stderr) helgrind/tests/tc22_exit_w_lock (stderr) drd/tests/std_thread2 (stderr) drd/tests/tls_threads (stderr) See here for details. macOS See the macos-VERSION-expected.txt in .github/ for more details about which tests pass on which version. Some tests are a bit flaky and might fail randomly, see .github/flaky-tests.txt for more details. Contributing Suppressions Valgrind is a very thorough program and can often report false positives. There are wide range of reasons why those come up (e.g. Valgrind not tracking some OS-specific part of the memory). Moreover, Valgrind might also report issues inside standard libraries, which are relevant for maintainers of such projects, but not to the end-user. While fixing those issues would be better, it isn't always possible. This is why Valgrind supports a system called "suppressions", which is a special file format instructing which errors to ignore so the end-user doesn't see them. Because some of those errors only show in special conditions, you might be asked to provide a "suppressions" file to be added to the repository. You can also keep those local to the project you are debugging and use them when running Valgrind. To create a "suppressions" file, simply run: valgrind YOUR_VALGRIND_OPTIONS --gen-suppressions=all YOUR_PROGRAM YOUR_PROGRAM_ARGS # for example: valgrind --trace-syscalls=yes --gen-suppressions=all ls -la # if you want to choose on a case-by-case basis instead of generating all the suppressions, you can do: valgrind --trace-syscalls=yes --gen-suppressions=yes ls -la You will then see a few extra entries in your output, they will look something like that: { <insert_a_suppression_name_here> Memcheck:Cond fun:_platform_strlen fun:_mh_execute_header fun:(below main) } or { <insert_a_suppression_name_here> Memcheck:Param write(buf) fun:write$NOCANCEL obj:/dev/ttys002 fun:_swrite fun:__sflush fun:__sfvwrite fun:puts fun:_mh_execute_header fun:(below main) } You can then add them to a new file, e.g. one called my.supp, replace the name <insert_a_suppression_name_here> with a description of the issue for later use. You can also use # to comment out lines, for documentation or disabling specific suppressions. Check any of the .supp files in this repository for examples, e.g. darwin19.supp. Acknowledgements tyrael9: for their work around porting Valgrind to iOS armv7 which was used as part of the port to arm64 (see here) Footnotes Supported as part of upstream Valgrind ↩ PowerPC is unsupported (#62) ↩ macOS 15 arm64 is experimental (#123) ↩翻译
11-15
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