Jim Wilson wrote: > JoseD wrote: > > @James > > What do you mean by 16.3.3/3? GCC's version ? > > This is a reference to the ISO C standard.
No. It's a reference to the ISO C++ standard. 16.3.3/3 includes the sentence "If the result [of the ## operator] is not a valid preprocessing token, the behavior is undefined." The passage in the ISO C standard is 6.10.3.3/3, and includes the same text. -- Richard Smith
