From: "hsbt (Hiroshi SHIBATA) via ruby-core" Date: 2025-07-16T00:15:49+00:00 Subject: [ruby-core:122790] [Ruby Bug#21496] Fix for gcc-15 `-flto` option Issue #21496 has been updated by hsbt (Hiroshi SHIBATA). I created https://github.com/ruby/ruby/pull/13892 for Ruby 3.4. ---------------------------------------- Bug #21496: Fix for gcc-15 `-flto` option https://bugs.ruby-lang.org/issues/21496#change-114070 * Author: nobu (Nobuyoshi Nakada) * Status: Closed * Backport: 3.2: REQUIRED, 3.3: REQUIRED, 3.4: REQUIRED ---------------------------------------- Even no prototype information is available, gcc-15 seems retrieve something when LTO is enabled. As the result, `have_func` method may fail due to the inconsistency between the info and the default old-style declaration. Possible fixes are: * Specify the header file providing its proper prototype. * Add the argument list to the first argument. By the following commits, the extconf.h files generated with `-flto` option became same as without the option. > commit:11fe8b26c14 [ruby/etc] Run `have_func` with the header providing the declarations > commit:134bdf2d34a [ruby/io-console] Run `have_func` with the header providing the declarations > commit:ac72a25a578 [ruby/io-nonblock] Run `have_func` with the header providing the declarations > commit:89031666487 [ruby/io-wait] Run `have_func` with the header providing the declarations > commit:5277ca1431a [ruby/openssl] Run `have_func` with the header providing the declarations > commit:94803fe9e7b [ruby/strscan] Run `have_func` with the header providing the declarations > commit:9d080765cc3 [ruby/json] Run `have_func` with the header providing the declarations -- https://bugs.ruby-lang.org/ ______________________________________________ ruby-core mailing list -- ruby-core@ml.ruby-lang.org To unsubscribe send an email to ruby-core-leave@ml.ruby-lang.org ruby-core info -- https://ml.ruby-lang.org/mailman3/lists/ruby-core.ml.ruby-lang.org/