Issue #7840 has been updated by ko1 (Koichi Sasada). Category set to build Assignee set to nobu (Nobuyoshi Nakada) Target version set to next minor ---------------------------------------- Bug #7840: -Wdeclaration-after-statement is valid for C/ObjC but not for C++ https://bugs.ruby-lang.org/issues/7840#change-36372 Author: Hanmac (Hans Mackowiak) Status: Open Priority: Normal Assignee: nobu (Nobuyoshi Nakada) Category: build Target version: next minor ruby -v: ruby 2.0.0dev (2013-02-13 trunk 39224) [x86_64-linux] because of the new flags in warnflags i get this following errors: cc1plus: warning: command line option '-Wdeclaration-after-statement' is valid for C/ObjC but not for C++ [enabled by default] cc1plus: warning: command line option '-Wimplicit-function-declaration' is valid for C/ObjC but not for C++ [enabled by default] its because my gems are written in C++ and not in C, so i think this flags should not be used when the variable is used for both C and C++ -- http://bugs.ruby-lang.org/