Issue #20107 has been updated by hsbt (Hiroshi SHIBATA). I'm not sure what you mean. We already removed Solaris from [Ruby CI](https://rubyci.org/) from Oct 2023. Can you point what is the old CI tasks? ---------------------------------------- Misc #20107: Update required Oracle Solaris Studio version to 12.5 https://bugs.ruby-lang.org/issues/20107#change-106039 * Author: kddnewton (Kevin Newton) * Status: Open * Priority: Normal * Assignee: ngoto (Naohisa Goto) ---------------------------------------- Per https://www.oracle.com/us/assets/lifetime-support-hardware-301321.pdf and https://www.oracle.com/a/ocom/docs/support/advanced-customer-support/solaris..., 12.2, 12.3, and 12.4 are all end-of-life for "extended support". We should drop these old compilers from our support suite for Ruby 3.4.0 so that we can use more of C99. Specifically, in conjunction with bumping to Visual Studio 2015, I believe this means we can now rely on `stdbool.h`, the `restrict` keyword, `va_copy`, `snprintf`, and the `%zu` printf specifier all functioning as expected. -- https://bugs.ruby-lang.org/