https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66953
sandra at gcc dot gnu.org changed:
What |Removed |Added
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CC| |sandra at gcc dot gnu.org
--- Comment #1 from sandra at gcc dot gnu.org ---
Hmmm. Near the top of extend.texi we have:
"Some features that are in ISO C99 but not C90 or C++ are also, as
extensions, accepted by GCC in C90 mode and in C++."
Maybe we just need to generalize this to say that -std=gnu@var{version} may
also accept, as extensions, features from subsequent versions of the standard?
E.g. randomly looking at some release notes for recent releases, I see things
like
https://gcc.gnu.org/gcc-11/changes.html
"Several new features from the upcoming C2X revision of the ISO C standard are
supported with -std=c2x and -std=gnu2x. Some of these features are also
supported as extensions when compiling for older language versions."
I think it would be a big project to track all these historical additions down
now and document them individually, when we could instead just tell users to
explicitly compile with a -std= version that supports the language features
their code depends on.
