mirror of
https://git.savannah.gnu.org/git/gnulib.git
synced 2025-08-08 17:22:05 +03:00
doc: C11 and C++11 are now official
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@@ -2329,14 +2329,14 @@ func_all_modules ()
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func_module mbfile
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func_end_table
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element="Support for systems lacking draft ISO C 1X"
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func_section_wrap c1x_sup
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element="Support for systems lacking ISO C11"
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func_section_wrap c11_sup
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func_wrap H2
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func_echo "$element"
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element="Core language properties"
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element=`printf "%s" "$element" | sed -e "$sed_lt" -e "$sed_gt"`
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func_section_wrap c1x_core_properties
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func_section_wrap c11_core_properties
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func_wrap H3
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func_echo "$element"
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@@ -10,7 +10,7 @@ See also the Gnulib module @code{assert}.
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Portability problems fixed by Gnulib:
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@itemize
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@item
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The draft C1X and C++0X @code{static_assert}, and the draft C1X
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The C11 and C++11 @code{static_assert}, and the C11
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@code{_Static_assert}, are not supported by many platforms.
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For example, GCC versions before 4.6.0 do not support @code{_Static_assert},
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and G++ versions through at least 4.6.0 do not support @code{static_assert}.
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@@ -19,11 +19,11 @@ and G++ versions through at least 4.6.0 do not support @code{static_assert}.
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Portability problems not fixed by Gnulib:
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@itemize
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@item
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Draft C1X @code{_Static_assert} and draft C++0X @code{static_assert}
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C11 @code{_Static_assert} and C++11 @code{static_assert}
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are keywords that can be used without including @code{<assert.h>}.
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The Gnulib substitutes are macros that require including @code{<assert.h>}.
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@item
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The draft C1X @code{static_assert} and @code{_Static_assert} can also
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The C11 @code{static_assert} and @code{_Static_assert} can also
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be used within a @code{struct} or @code{union} specifier, in place of
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an ordinary declaration of a member of the struct or union. The
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Gnulib substitute can be used only as an ordinary declaration.
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@@ -2,9 +2,11 @@
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@section @file{stdalign.h}
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POSIX specification:@* Not in POSIX yet, but we expect it will be.
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ISO C1X @url{http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1570.pdf}
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ISO C11 (latest free draft
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@url{http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1570.pdf})
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sections 6.5.3.4, 6.7.5, 7.15.
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C++0X @url{http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2011/n3242.pdf}
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C++11 (latest free draft
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@url{http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2011/n3242.pdf})
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section 18.10.
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Gnulib module: stdalign
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@@ -50,11 +50,11 @@ integer constant expression, then a compiler might reject a usage like
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@samp{verify (@var{V});} even when @var{V} is
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nonzero.
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Although the standard @code{assert} macro is a runtime test, draft C1X
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Although the standard @code{assert} macro is a runtime test, C11
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specifies a builtin @code{_Static_assert (@var{V},
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@var{STRING-LITERAL})}, its @file{assert.h} header has a similar macro
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named @code{static_assert}, and draft C++0X has a similar
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@code{static_assert} builtin. These draft builtins and macros differ
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named @code{static_assert}, and C++11 has a similar
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@code{static_assert} builtin. These builtins and macros differ
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from @code{verify} in two major ways. First, they can also be used
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within a @code{struct} or @code{union} specifier, in place of an
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ordinary member declaration. Second, they require the programmer to
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@@ -1,4 +1,4 @@
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/* A substitute for ISO C 1x <stdalign.h>.
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/* A substitute for ISO C11 <stdalign.h>.
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Copyright 2011-2012 Free Software Foundation, Inc.
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@@ -21,12 +21,14 @@
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#ifndef _GL_STDALIGN_H
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#define _GL_STDALIGN_H
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/* ISO C1X <stdalign.h> for platforms that lack it.
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/* ISO C11 <stdalign.h> for platforms that lack it.
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References:
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ISO C1X <http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1570.pdf>
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ISO C11 (latest free draft
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<http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1570.pdf>)
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sections 6.5.3.4, 6.7.5, 7.15.
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C++0X <http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2011/n3242.pdf>
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C++11 (latest free draft
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<http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2011/n3242.pdf>)
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section 18.10. */
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/* alignof (TYPE), also known as _Alignof (TYPE), yields the alignment
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@@ -68,7 +70,7 @@
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To be portable to Sun C 5.11, do not align auto variables to
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anything stricter than their default alignment.
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The following draft C1X requirements are not supported here:
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The following C11 requirements are not supported here:
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- If A is zero, alignas has no effect.
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- alignas can be used multiple times; the strictest one wins.
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14
lib/verify.h
14
lib/verify.h
@@ -21,13 +21,11 @@
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# define _GL_VERIFY_H
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/* Define _GL_HAVE__STATIC_ASSERT to 1 if _Static_assert works as per the
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C1X draft N1548 section 6.7.10. This is supported by GCC 4.6.0 and
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later, in C mode, and its use here generates easier-to-read diagnostics
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when verify (R) fails.
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/* Define _GL_HAVE__STATIC_ASSERT to 1 if _Static_assert works as per C11.
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This is supported by GCC 4.6.0 and later, in C mode, and its use
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here generates easier-to-read diagnostics when verify (R) fails.
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Define _GL_HAVE_STATIC_ASSERT to 1 if static_assert works as per the
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C++0X draft N3242 section 7.(4).
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Define _GL_HAVE_STATIC_ASSERT to 1 if static_assert works as per C++11.
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This will likely be supported by future GCC versions, in C++ mode.
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Use this only with GCC. If we were willing to slow 'configure'
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@@ -188,7 +186,7 @@ template <int w>
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trailing ';'. If R is false, fail at compile-time, preferably
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with a diagnostic that includes the string-literal DIAGNOSTIC.
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Unfortunately, unlike C1X, this implementation must appear as an
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Unfortunately, unlike C11, this implementation must appear as an
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ordinary declaration, and cannot appear inside struct { ... }. */
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# ifdef _GL_HAVE__STATIC_ASSERT
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@@ -205,7 +203,7 @@ template <int w>
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# define _Static_assert(R, DIAGNOSTIC) _GL_VERIFY (R, DIAGNOSTIC)
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# endif
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# if !defined _GL_HAVE_STATIC_ASSERT && !defined static_assert
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# define static_assert _Static_assert /* Draft C1X requires this #define. */
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# define static_assert _Static_assert /* C11 requires this #define. */
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# endif
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# endif
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@@ -1,4 +1,4 @@
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# gnulib-common.m4 serial 31
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# gnulib-common.m4 serial 32
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dnl Copyright (C) 2007-2012 Free Software Foundation, Inc.
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dnl This file is free software; the Free Software Foundation
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dnl gives unlimited permission to copy and/or distribute it,
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@@ -13,7 +13,7 @@ AC_DEFUN([gl_COMMON], [
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])
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AC_DEFUN([gl_COMMON_BODY], [
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AH_VERBATIM([_Noreturn],
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[/* The _Noreturn keyword of draft C1X. */
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[/* The _Noreturn keyword of C11. */
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#ifndef _Noreturn
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# if (3 <= __GNUC__ || (__GNUC__ == 2 && 8 <= __GNUC_MINOR__) \
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|| 0x5110 <= __SUNPRO_C)
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@@ -224,7 +224,7 @@ m4_ifndef([AS_VAR_IF],
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# - When AC_PROG_CC_STDC is invoked twice, it adds the C99 enabling options
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# to CC twice
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# <http://lists.gnu.org/archive/html/bug-gnulib/2011-09/msg00431.html>.
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# - AC_PROG_CC_STDC is likely to change when C1X is an ISO standard.
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# - AC_PROG_CC_STDC is likely to change now that C11 is an ISO standard.
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AC_DEFUN([gl_PROG_CC_C99],
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[
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dnl Change that version number to the minimum Autoconf version that supports
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@@ -1,4 +1,4 @@
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# Check for stdalign.h that conforms to C1x.
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# Check for stdalign.h that conforms to C11.
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dnl Copyright 2011-2012 Free Software Foundation, Inc.
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dnl This file is free software; the Free Software Foundation
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@@ -1,5 +1,5 @@
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Description:
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An <assert.h> that conforms to C1X.
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An <assert.h> that conforms to C11.
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Files:
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lib/assert.in.h
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@@ -1,5 +1,5 @@
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Description:
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The _Noreturn keyword of C1X.
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The _Noreturn keyword of C11.
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Applicability:
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all
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@@ -1,5 +1,5 @@
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Description:
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A <stdalign.h> that nearly conforms to ISO C1X and C++0X.
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A <stdalign.h> that nearly conforms to ISO C11 and C++11.
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Files:
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lib/stdalign.in.h
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