Issue #20107 has been updated by kddnewton (Kevin Newton). Oh sorry I was going based on https://github.com/ruby/ruby/wiki/C99-Usage-Guidelines. If we no longer test with these, then I think this issue can be closed? Is there any other documentation or tests that need to be updated? ---------------------------------------- Misc #20107: Update required Oracle Solaris Studio version to 12.5 https://bugs.ruby-lang.org/issues/20107#change-106041 * 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/