On Thu, 8 Oct 2020, JeanHeyd Meneide via Gcc-patches wrote: > * gcc/doc/cpp.texi: Document new predefined macro.
This documentation doesn't seem sufficient to use the macros. Do they expand to (narrow) string literals? To an unquoted sequence of characters? I think from the implementation that the answer is strings (so, in particular, not usable for testing anything in #if conditionals), but the documentation ought to say so. The test ought to verify the form of the expansion as well (even if it can't do anything useful at execution time, because if you make the macros reflect the command-line options they are character set names that are meaningful on the host, and any conversion functionality on the target may not use the same names as the host). -- Joseph S. Myers jos...@codesourcery.com
