On Thu, 2014-07-24 at 09:19 +0100, Jonathan Wakely wrote: > That is valid C++ code. C linkage doesn't mean the function has to > actually be usable from C. > > You can also declare functions with C linkage that take reference > parameters or throw exceptions. I didn't know that. Out of curiosity...I assumed that one of the ramifications of declaring some code w/ C linkage was that it emitted symbols that have C mangling. Is that true? If so, how are C++ antics handled in this scenario? > > My question is: does GCC have a warning for this scenario? > > Specifically, can it warn when something is declared extern "C" that's > > incompatible with C linkage? > > No, there is no such warning as far as I know. > > Such a warning doesn't seem unreasonable, since *usually* (not not > always) you want functions with C language linkage to be callable from > C. Ok well let me know if I should open an enhancement request ticket for this.
