Today worked on some different things. The first one was making another libexecinfo based on libunwind. The issue was that the current libexecinfo (resslinux\/libexecinfo on github) sometimes segfaults. For me it segfaulted when emerging Emacs because temacs (Emacs bootstrap) used it, and I think it backtraced too far (into libc). After reading some GitHub issues\/ML posts it seemed like everyone recommended libunwind instead, and there were some issues with libexecinfo due to __builtin_frame_address. Because the execinfo interface is so simple: basically one function that returns a list of pointers to previous function calls, and two other functions that retrieves the symbol names for these addresses, I thought it would be neat to just use libunwind for the backtrace()-function (the one that returns list of ptrs) and then just copy paste the symbol lookup funcs. I tried it and it “just works” without the __builtin_* hackery! The current version is improved over libexecinfo in 4 ways:<\/p>\n
ebuild: https:\/\/github.com\/alfredfo\/catcream_repo\/blob\/master\/sys-libs\/libexecinfo\/libexecinfo-1.0.0.ebuild
\nsource: https:\/\/github.com\/alfredfo\/libexecinfo-unw<\/p>\n
see: https:\/\/github.com\/mikroskeem\/libexecinfo\/issues\/2, https:\/\/www.openwall.com\/lists\/musl\/2019\/08\/22\/2.<\/p>\n
I’ve also learnt how to set up clean musl build systems with ebuildtester. I have continued to research the Konsole test thing from monday. The TerminalInterfaceTest only fails when using zsh and ebuild konsole-ver.ebuild test (not executing test manually). I still don’t know really what causes it but when using bash it works.<\/p>\n This code fails, but changing it to works just fine. Really weird! It acts like there’s some garbage text inputted at the start.<\/p>\n I also never posted anything yesterday because I was up really late working on gsoc and just went to sleep :). Yesterday I messed around with Emacs to figure out the libexecinfo bug and I also looked into how to use libunwind, which got me the idea to implement libexecinfo using it. I also spent some time with the Konsole test thing.<\/p>\n","protected":false},"excerpt":{"rendered":" Today worked on some different things. The first one was making another libexecinfo based on libunwind. The issue was that the current libexecinfo (resslinux\/libexecinfo on github) sometimes segfaults. For me it segfaulted when emerging Emacs because temacs (Emacs bootstrap) used … Continue reading
\nExample: ebuildtester --portage-dir \/home\/cat\/gentoo --atom sys-process\/htop --docker-image gentoo\/stage3:musl<\/code>
\nSpent some time with Docker images before I realized that there was already a gentoo\/stage3:musl image ready.<\/p>\ncurrentDirectory = QStringLiteral(\"\/tmp\");
\nterminal->sendInput(QStringLiteral(\"cd\") + currentDirectory + QLatin1Char('\\n')); <- THIS
\nstateSpy.wait(2000);
\nQCOMPARE(stateSpy.count(), 1);<\/code><\/p>\n
\ncurrentDirectory = QStringLiteral(\"\/tmp\");
\nterminal->sendInput(QStringLiteral(\"\\ncd\") + currentDirectory + QLatin1Char('\\n'));
\nstateSpy.wait(2000);
\nQCOMPARE(stateSpy.count(), 1);<\/code>
\nor
\ncurrentDirectory = QStringLiteral(\"\/tmp\");
\nterminal->sendInput(QStringLiteral(\";cd\") + currentDirectory + QLatin1Char('\\n'));
\nstateSpy.wait(2000);
\nQCOMPARE(stateSpy.count(), 1);<\/code><\/p>\n