Hi! In the following, a few patches for libstdc++ to avoid '-Wunused-parameter' diagnostics (actually '-Werror=unused-parameter', for my '--enable-werror' builds). So far, only build-tested for GCN, nvptx. Are these changes OK?
What are exactly the semantics for '_GLIBCXX_THROW_OR_ABORT', should this evaluate its argument for '!__cpp_exceptions' or not? For example, compare to how 'gcc/system.h:gcc_checking_assert' gets defined so that "in release build EXPR is not evaluated". The other patches do similar to how '[[maybe_unused]]' appears to be used elsewhere, or should we rather '(void)' cast only in the specific '#if' regions where the variables are actually unused? Grüße Thomas
