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semantics.c (classtype_has_nothrow_copy_or_assign_p): Adjust per N2255; rename as classtype_has_nothrow_assign_or_copy_p.

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gcc/cp
2007-04-25  Paolo Carlini  <pcarlini@suse.de>

	* semantics.c (classtype_has_nothrow_copy_or_assign_p): Adjust
	per N2255; rename as classtype_has_nothrow_assign_or_copy_p.
	(trait_expr_value): Adjust.

gcc/testsuite/
2007-04-25  Paolo Carlini  <pcarlini@suse.de>

	* g++.dg/ext/has_nothrow_assign.C: Adjust per N2255.

gcc/
2007-04-25  Paolo Carlini  <pcarlini@suse.de>

	* doc/extend.texi ([Type Traits]): Adjust per N2255.

From-SVN: r124170
This commit is contained in:
Paolo Carlini 2007-04-25 23:55:11 +00:00 committed by Paolo Carlini
parent d6626ee7a5
commit b29441ec79
6 changed files with 49 additions and 60 deletions
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4
gcc/ChangeLog
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@ -1,3 +1,7 @@
2007-04-25 Paolo Carlini <pcarlini@suse.de>
* doc/extend.texi ([Type Traits]): Adjust per N2255.
2007-04-25 Bob Wilson <bob.wilson@acm.org>
* config/xtensa/lib1funcs.asm (__udivsi3, __divsi3): Throw an exception

6
gcc/cp/ChangeLog
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@ -1,3 +1,9 @@
2007-04-25 Paolo Carlini <pcarlini@suse.de>
* semantics.c (classtype_has_nothrow_copy_or_assign_p): Adjust
per N2255; rename as classtype_has_nothrow_assign_or_copy_p.
(trait_expr_value): Adjust.
2007-04-23 Simon Baldwin <simonb@google.com>
* decl.c (grokparms): Added new error for duplicate function

80
gcc/cp/semantics.c
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@ -4007,63 +4007,37 @@ finish_static_assert (tree condition, tree message, location_t location,
}
}
/* Called from trait_expr_value to evaluate either __has_nothrow_copy or
__has_nothrow_assign, depending on copy_p. */
/* Called from trait_expr_value to evaluate either __has_nothrow_assign or
__has_nothrow_copy, depending on assign_p. */
static bool
classtype_has_nothrow_copy_or_assign_p (tree type, bool copy_p)
classtype_has_nothrow_assign_or_copy_p (tree type, bool assign_p)
{
if ((copy_p && TYPE_HAS_INIT_REF (type))
|| (!copy_p && TYPE_HAS_ASSIGN_REF (type)))
tree fns;
if (assign_p)
{
bool const_p = false;
tree t;
struct copy_data
{
tree name;
int quals;
} data;
data.name = copy_p ? NULL_TREE : ansi_assopname (NOP_EXPR);
data.quals = TYPE_QUAL_CONST;
t = locate_copy (type, &data);
if (t)
{
const_p = true;
if (!TREE_NOTHROW (t))
return false;
}
if (copy_p || !CP_TYPE_CONST_P (type))
{
data.quals = TYPE_UNQUALIFIED;
t = locate_copy (type, &data);
if (t && !TREE_NOTHROW (t))
return false;
data.quals = TYPE_QUAL_VOLATILE;
t = locate_copy (type, &data);
if (t && !TREE_NOTHROW (t))
return false;
}
data.quals = (TYPE_QUAL_CONST | TYPE_QUAL_VOLATILE);
t = locate_copy (type, &data);
if (t)
{
const_p = true;
if (!TREE_NOTHROW (t))
return false;
}
if (!copy_p && CP_TYPE_CONST_P (type) && !const_p)
int ix;
ix = lookup_fnfields_1 (type, ansi_assopname (NOP_EXPR));
if (ix < 0)
return false;
fns = VEC_index (tree, CLASSTYPE_METHOD_VEC (type), ix);
}
else if (TYPE_HAS_INIT_REF (type))
{
/* If construction of the copy constructor was postponed, create
it now. */
if (CLASSTYPE_LAZY_COPY_CTOR (type))
lazily_declare_fn (sfk_copy_constructor, type);
fns = CLASSTYPE_CONSTRUCTORS (type);
}
else
return false;
for (; fns; fns = OVL_NEXT (fns))
if (!TREE_NOTHROW (OVL_CURRENT (fns)))
return false;
return true;
}
@ -4080,9 +4054,11 @@ trait_expr_value (cp_trait_kind kind, tree type1, tree type2)
switch (kind)
{
case CPTK_HAS_NOTHROW_ASSIGN:
return (trait_expr_value (CPTK_HAS_TRIVIAL_ASSIGN, type1, type2)
|| (CLASS_TYPE_P (type1)
&& classtype_has_nothrow_copy_or_assign_p (type1, false)));
return (!CP_TYPE_CONST_P (type1) && type_code1 != REFERENCE_TYPE
&& (trait_expr_value (CPTK_HAS_TRIVIAL_ASSIGN, type1, type2)
|| (CLASS_TYPE_P (type1)
&& classtype_has_nothrow_assign_or_copy_p (type1,
true))));
case CPTK_HAS_TRIVIAL_ASSIGN:
return (!CP_TYPE_CONST_P (type1) && type_code1 != REFERENCE_TYPE
@ -4104,7 +4080,7 @@ trait_expr_value (cp_trait_kind kind, tree type1, tree type2)
case CPTK_HAS_NOTHROW_COPY:
return (trait_expr_value (CPTK_HAS_TRIVIAL_COPY, type1, type2)
|| (CLASS_TYPE_P (type1)
&& classtype_has_nothrow_copy_or_assign_p (type1, true)));
&& classtype_has_nothrow_assign_or_copy_p (type1, false)));
case CPTK_HAS_TRIVIAL_COPY:
return (pod_type_p (type1) || type_code1 == REFERENCE_TYPE

13
gcc/doc/extend.texi
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@ -11246,13 +11246,12 @@ pair of types).
@table @code
@item __has_nothrow_assign (type)
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.
If @code{type} is const qualified, any copy assignment operator must
be both known not to throw an exception, and const qualified, for the
trait to be true. Requires: @code{type} shall be a complete type, an
array type of unknown bound, or is a @code{void} type.
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.
@item __has_nothrow_copy (type)
If @code{__has_trivial_copy (type)} is true then the trait is true, else if

4
gcc/testsuite/ChangeLog
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@ -1,3 +1,7 @@
2007-04-25 Paolo Carlini <pcarlini@suse.de>
* g++.dg/ext/has_nothrow_assign.C: Adjust per N2255.
2007-04-25 Thiemo Seufer <ths@mips.com>
* gcc.target/mips/mips16e-extends.c (cksum8): Change return

2
gcc/testsuite/g++.dg/ext/has_nothrow_assign.C
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@ -146,7 +146,7 @@ int main()
assert (NTEST (I1));
assert (PTEST (J));
assert (NTEST (const K));
assert (PTEST (const L));
assert (NTEST (const L));
return 0;
}