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re PR other/48748 (Undocumented type traits used in libstdc++-4.6)

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2011-04-24  Paolo Carlini  <paolo.carlini@oracle.com>

	PR other/48748
	* doc/extend.texi (Type Traits): Document __is_standard_layout,
	__is_literal_type, and __is_trivial; update throughout about
	possibly cv-qualified void types.

From-SVN: r172911
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Paolo Carlini 2011-04-24 09:42:16 +00:00 committed by Paolo Carlini
parent bebd5f993c
commit 5307cbaa75
2 changed files with 43 additions and 21 deletions
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@ -1,3 +1,10 @@
2011-04-24 Paolo Carlini <paolo.carlini@oracle.com>
PR other/48748
* doc/extend.texi (Type Traits): Document __is_standard_layout,
__is_literal_type, and __is_trivial; update throughout about
possibly cv-qualified void types.
2011-04-24 Gerald Pfeifer <gerald@pfeifer.com>
* doc/sourcebuild.texi (Ada Tests): Adjust reference to ACATS

57
gcc/doc/extend.texi
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@ -14305,63 +14305,63 @@ If @code{type} is const qualified or is a reference type then the trait is
false. Otherwise if @code{__has_trivial_assign (type)} is true then the trait
is true, else if @code{type} is a cv class or union type with copy assignment
operators that are known not to throw an exception then the trait is true,
else it is false. Requires: @code{type} shall be a complete type, an array
type of unknown bound, or is a @code{void} type.
else it is false. Requires: @code{type} shall be a complete type,
(possibly cv-qualified) @code{void}, or an array of unknown bound.
@item __has_nothrow_copy (type)
If @code{__has_trivial_copy (type)} is true then the trait is true, else if
@code{type} is a cv class or union type with copy constructors that
are known not to throw an exception then the trait is true, else it is false.
Requires: @code{type} shall be a complete type, an array type of
unknown bound, or is a @code{void} type.
Requires: @code{type} shall be a complete type, (possibly cv-qualified)
@code{void}, or an array of unknown bound.
@item __has_nothrow_constructor (type)
If @code{__has_trivial_constructor (type)} is true then the trait is
true, else if @code{type} is a cv class or union type (or array
thereof) with a default constructor that is known not to throw an
exception then the trait is true, else it is false. Requires:
@code{type} shall be a complete type, an array type of unknown bound,
or is a @code{void} type.
exception then the trait is true, else it is false. Requires:
@code{type} shall be a complete type, (possibly cv-qualified)
@code{void}, or an array of unknown bound.
@item __has_trivial_assign (type)
If @code{type} is const qualified or is a reference type then the trait is
false. Otherwise if @code{__is_pod (type)} is true then the trait is
true, else if @code{type} is a cv class or union type with a trivial
copy assignment ([class.copy]) then the trait is true, else it is
false. Requires: @code{type} shall be a complete type, an array type
of unknown bound, or is a @code{void} type.
false. Requires: @code{type} shall be a complete type, (possibly
cv-qualified) @code{void}, or an array of unknown bound.
@item __has_trivial_copy (type)
If @code{__is_pod (type)} is true or @code{type} is a reference type
then the trait is true, else if @code{type} is a cv class or union type
with a trivial copy constructor ([class.copy]) then the trait
is true, else it is false. Requires: @code{type} shall be a complete
type, an array type of unknown bound, or is a @code{void} type.
type, (possibly cv-qualified) @code{void}, or an array of unknown bound.
@item __has_trivial_constructor (type)
If @code{__is_pod (type)} is true then the trait is true, else if
@code{type} is a cv class or union type (or array thereof) with a
trivial default constructor ([class.ctor]) then the trait is true,
else it is false. Requires: @code{type} shall be a complete type, an
array type of unknown bound, or is a @code{void} type.
else it is false. Requires: @code{type} shall be a complete
type, (possibly cv-qualified) @code{void}, or an array of unknown bound.
@item __has_trivial_destructor (type)
If @code{__is_pod (type)} is true or @code{type} is a reference type then
the trait is true, else if @code{type} is a cv class or union type (or
array thereof) with a trivial destructor ([class.dtor]) then the trait
is true, else it is false. Requires: @code{type} shall be a complete
type, an array type of unknown bound, or is a @code{void} type.
type, (possibly cv-qualified) @code{void}, or an array of unknown bound.
@item __has_virtual_destructor (type)
If @code{type} is a class type with a virtual destructor
([class.dtor]) then the trait is true, else it is false. Requires:
@code{type} shall be a complete type, an array type of unknown bound,
or is a @code{void} type.
@code{type} shall be a complete type, (possibly cv-qualified)
@code{void}, or an array of unknown bound.
@item __is_abstract (type)
If @code{type} is an abstract class ([class.abstract]) then the trait
is true, else it is false. Requires: @code{type} shall be a complete
type, an array type of unknown bound, or is a @code{void} type.
type, (possibly cv-qualified) @code{void}, or an array of unknown bound.
@item __is_base_of (base_type, derived_type)
If @code{base_type} is a base class of @code{derived_type}
@ -14386,22 +14386,37 @@ any, are bit-fields of length 0, and @code{type} has no virtual
members, and @code{type} has no virtual base classes, and @code{type}
has no base classes @code{base_type} for which
@code{__is_empty (base_type)} is false. Requires: @code{type} shall
be a complete type, an array type of unknown bound, or is a
@code{void} type.
be a complete type, (possibly cv-qualified) @code{void}, or an array
of unknown bound.
@item __is_enum (type)
If @code{type} is a cv enumeration type ([basic.compound]) the trait is
true, else it is false.
@item __is_literal_type (type)
If @code{type} is a literal type ([basic.types]) the trait is
true, else it is false. Requires: @code{type} shall be a complete type,
(possibly cv-qualified) @code{void}, or an array of unknown bound.
@item __is_pod (type)
If @code{type} is a cv POD type ([basic.types]) then the trait is true,
else it is false. Requires: @code{type} shall be a complete type,
an array type of unknown bound, or is a @code{void} type.
else it is false. Requires: @code{type} shall be a complete type,
(possibly cv-qualified) @code{void}, or an array of unknown bound.
@item __is_polymorphic (type)
If @code{type} is a polymorphic class ([class.virtual]) then the trait
is true, else it is false. Requires: @code{type} shall be a complete
type, an array type of unknown bound, or is a @code{void} type.
type, (possibly cv-qualified) @code{void}, or an array of unknown bound.
@item __is_standard_layout (type)
If @code{type} is a standard-layout type ([basic.types]) the trait is
true, else it is false. Requires: @code{type} shall be a complete
type, (possibly cv-qualified) @code{void}, or an array of unknown bound.
@item __is_trivial (type)
If @code{type} is a trivial type ([basic.types]) the trait is
true, else it is false. Requires: @code{type} shall be a complete
type, (possibly cv-qualified) @code{void}, or an array of unknown bound.
@item __is_union (type)
If @code{type} is a cv union type ([basic.compound]) the trait is