diff options
Diffstat (limited to 'gcc/doc')
| -rw-r--r-- | gcc/doc/cpp.texi | 3 | ||||
| -rw-r--r-- | gcc/doc/invoke.texi | 9 | ||||
| -rw-r--r-- | gcc/doc/standards.texi | 6 |
3 files changed, 17 insertions, 1 deletions
diff --git a/gcc/doc/cpp.texi b/gcc/doc/cpp.texi index 5345574..cb5d5bd 100644 --- a/gcc/doc/cpp.texi +++ b/gcc/doc/cpp.texi @@ -1887,7 +1887,8 @@ the 1999 revision of the C standard; the value @code{201112L} signifies the 2011 revision of the C standard; the value @code{201710L} signifies the 2017 revision of the C standard (which is otherwise identical to the 2011 version apart from correction of -defects). +defects). An unspecified value larger than @code{201710L} is used for +the experimental @option{-std=c2x} and @option{-std=gnu2x} modes. This macro is not defined if the @option{-traditional-cpp} option is used, nor when compiling C++ or Objective-C@. diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index 7b08076..bf8bcfb 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -1933,6 +1933,10 @@ same as C11 except for corrections of defects (all of which are also applied with @option{-std=c11}) and a new value of @code{__STDC_VERSION__}, and so is supported to the same extent as C11. +@item c2x +The next version of the ISO C standard, still under development. The +support for this version is experimental and incomplete. + @item gnu90 @itemx gnu89 GNU dialect of ISO C90 (including some C99 features). @@ -1950,6 +1954,11 @@ The name @samp{gnu1x} is deprecated. @itemx gnu18 GNU dialect of ISO C17. This is the default for C code. +@item gnu2x +The next version of the ISO C standard, still under development, plus +GNU extensions. The support for this version is experimental and +incomplete. + @item c++98 @itemx c++03 The 1998 ISO C++ standard plus the 2003 technical corrigendum and some diff --git a/gcc/doc/standards.texi b/gcc/doc/standards.texi index bd9ff6b..26350cc 100644 --- a/gcc/doc/standards.texi +++ b/gcc/doc/standards.texi @@ -38,6 +38,8 @@ with some exceptions, and possibly with some extensions. @cindex C1X @cindex ISO C17 @cindex C17 +@cindex ISO C2X +@cindex C2X @cindex Technical Corrigenda @cindex TC1 @cindex Technical Corrigendum 1 @@ -109,6 +111,10 @@ known as @dfn{C17} and is supported with @option{-std=c17} or @option{-std=c11}, and the only difference between the options is the value of @code{__STDC_VERSION__}. +A further version of the C standard, known as @dfn{C2X}, is under +development; experimental and incomplete support for this is enabled +with @option{-std=c2x}. + By default, GCC provides some extensions to the C language that, on rare occasions conflict with the C standard. @xref{C Extensions,,Extensions to the C Language Family}. |