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| author | jsm28 <jsm28@138bc75d-0d04-0410-961f-82ee72b054a4> | 2010-04-25 21:54:22 +0000 |
|---|---|---|
| committer | jsm28 <jsm28@138bc75d-0d04-0410-961f-82ee72b054a4> | 2010-04-25 21:54:22 +0000 |
| commit | 39012afb52bcbeb198c90671aaece181d542728a (patch) | |
| tree | feff2a16895d1da5319551fc1b48b05b2a464692 /gcc/doc/standards.texi | |
| parent | d25092869c9e4dd8b8d56b60226200c14d7fa280 (diff) | |
| download | gcc-39012afb52bcbeb198c90671aaece181d542728a.tar.gz | |
gcc:
* c-common.c (flag_isoc1x): New.
(flag_isoc99): Update comment.
* c-common.h (flag_isoc1x): New.
(flag_isoc99): Update comment.
* c-cppbuiltin.c (builtin_define_float_constants): Also define
__<type>_DECIMAL_DIG__.
* c-opts.c (set_std_c1x): New.
(c_common_handle_option): Handle -std=c1x and -std=gnu1x.
(set_std_c89, set_std_c99): Also set flag_isoc1x to 0.
* c.opt (-std=c1x, -std=gnu1x): New options.
* doc/cpp.texi: Mention -std=c1x.
* doc/cppopts.texi (-std=c1x, -std=gnu1x): Document.
* doc/extend.texi: Mention -std=c1x and -std=gnu1x.
* doc/invoke.texi (-std=c1x, -std=gnu1x): Document.
* doc/standards.texi: Mention C1X.
* ginclude/float.h (FLT_DECIMAL_DIG, DBL_DECIMAL_DIG,
LDBL_DECIMAL_DIG, FLT_HAS_SUBNORM, DBL_HAS_SUBNORM,
LDBL_HAS_SUBNORM, FLT_TRUE_MIN, DBL_TRUE_MIN, LDBL_TRUE_MIN):
Define for C1X.
gcc/testsuite:
* gcc.dg/c90-float-1.c: Also test that C1X macros are not defined.
* gcc.dg/c99-float-1.c: Also test that C1X macros are not defined.
* gcc.dg/c1x-float-1.c: New test.
libcpp:
* include/cpplib.h (enum c_lang): Add CLK_GNUC1X and CLK_STDC1X.
* init.c (lang_defaults): Add entries for new language variants.
(cpp_init_builtins): Define __STDC_VERSION__ to 201000L for C1X
variants.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@158711 138bc75d-0d04-0410-961f-82ee72b054a4
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 |