Hi Tim, > FreeBSD clang version 6.0.0 (tags/RELEASE_600/final 326565) (based on > LLVM 6.0.0)
OK. > The option -Wused-but-marked-unused is indirectly activated by > -Weverything -Weverything is not something we can support in gnulib. For the meaning of this option, see https://quuxplusone.github.io/blog/2018/12/06/dont-use-weverything/ > which is set during the ./configure run (kind of a > manywarnings module) Why do we have a 'manywarnings' module, not an 'allwarnings' module? Look into the list of warnings that we don't add through 'manywarnings': build-aux/gcc-warning.spec build-aux/g++-warning.spec > And I wonder why do the c_ macros are marked > UNUSED at all (I assume that gnulib does it for some reason) ? 'c-ctype' uses the module 'extern-inline'. In extern-inline.m4 you can see that on platforms where 'extern inline' cannot properly be supported, we let _GL_INLINE expand to 'static _GL_UNUSED'. Without '_GL_UNUSED', gcc (with some appropriate, useful warning options) would complain that the functions are not used. The ability to use this warning option - which allows developers to detect dead code - is more important than the option -Wused-but-marked-unused. Bruno
