diff options
Diffstat (limited to 'gcc/doc/standards.texi')
| -rw-r--r-- | gcc/doc/standards.texi | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/gcc/doc/standards.texi b/gcc/doc/standards.texi index b9761bb30d6..f6d8acd6a72 100644 --- a/gcc/doc/standards.texi +++ b/gcc/doc/standards.texi @@ -33,6 +33,8 @@ with some exceptions, and possibly with some extensions. @cindex C99 @cindex ISO C9X @cindex C9X +@cindex ISO C1X +@cindex C1X @cindex Technical Corrigenda @cindex TC1 @cindex Technical Corrigendum 1 @@ -93,14 +95,19 @@ Errors in the 1999 ISO C standard were corrected in three Technical Corrigenda published in 2001, 2004 and 2007. GCC does not support the uncorrected version. +A fourth version of the C standard, known as @dfn{C1X}, is under +development; GCC has limited preliminary support for parts of this +standard, enabled with @option{-std=c1x}. + 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}. Use of the @option{-std} options listed above will disable these extensions where they conflict with the C standard version selected. You may also select an extended version of the C language explicitly with -@option{-std=gnu90} (for C90 with GNU extensions) or @option{-std=gnu99} -(for C99 with GNU extensions). The default, if no C language dialect +@option{-std=gnu90} (for C90 with GNU extensions), @option{-std=gnu99} +(for C99 with GNU extensions) or @option{-std=gnu1x} (for C1X with GNU +extensions). The default, if no C language dialect options are given, is @option{-std=gnu90}; this will change to @option{-std=gnu99} in some future release when the C99 support is complete. Some features that are part of the C99 standard are |