gcc/libstdc++-v3/testsuite/20_util
Patrick Palka 864fed4a49 c++: Explain fn template argument type/value mismatches [PR66439]
In fn_type_unifcation, we are passing NULL_TREE as the 'in_decl'
parameter to coerce_template_parms, and this is causing template
type/value mismatch error messages to get suppressed regardless of the
value of 'complain'.

This means that when substitution into a function template fails due to
a type/value mismatch between a template parameter and the provided
template argument, we just say "template argument deduction/substitution
failed:" without a followup explanation of the failure.

Fix this by passing 'fn' instead of NULL_TREE to coerce_template_parms.

gcc/cp/ChangeLog:

	PR c++/66439
	* pt.c (fn_type_unification): Pass 'fn' instead of NULL_TREE as
	the 'in_decl' parameter to coerce_template_parms.

gcc/testsuite/ChangeLog:

	PR c++/66439
	* g++.dg/cpp2a/concepts-ts4.C: Expect a "type/value mismatch"
	diagnostic.
	* g++.dg/cpp2a/concepts-ts6.C: Likewise.
	* g++.dg/template/error56.C: Likewise.
	* g++.dg/template/error59.C: New test.

libstdc++-v3/ChangeLog:

	PR c++/66439
	* testsuite/20_util/pair/astuple/get_neg.cc: Prune "type/value
	mismatch" messages.
	* testsuite/20_util/tuple/element_access/get_neg.cc: Likewise.
2020-05-18 23:50:14 -04:00
..
add_const
add_cv
add_lvalue_reference
add_pointer
add_rvalue_reference
add_volatile
addressof
align
aligned_storage
aligned_union
alignment_of
allocator libstdc++: Avoid errors in allocator's noexcept-specifier (PR 89510) 2020-04-30 16:01:43 +01:00
allocator_traits Library-side tests for parenthesized aggregate init 2020-03-31 17:07:52 +03:00
any libstdc++: Fix constructor constraints for std::any (PR 90415) 2020-04-24 00:54:20 +01:00
as_const
assume_aligned
auto_ptr
bad_function_call
bind x32 does not support MS ABI, skip testcases that require it. 2020-03-16 14:38:06 +01:00
bool_constant
common_reference/requirements
common_type/requirements
conditional/requirements
decay/requirements
declval/requirements
default_delete libstdc++: Add comparison operators to std::unique_ptr 2020-04-09 21:10:32 +01:00
duration libstdc++: Add comparison operators to <chrono> types 2020-04-18 00:47:45 +01:00
duration_cast
enable_if/requirements
enable_shared_from_this
exchange libstdc++: Do not define __cpp_lib_constexpr_algorithms in <utility> 2020-04-22 22:54:35 +01:00
extent
forward
from_chars libstdc++: Add comparison operators to <charconv> result types 2020-04-08 16:16:10 +01:00
function
function_objects libstdc++: Fixes for feature test macros (PR 91480) 2020-04-28 23:40:18 +01:00
has_unique_object_representations
has_virtual_destructor
hash
headers
in_place
integer_comparisons libstdc++: Fix new tests that fail for ILP32 targets 2020-02-18 18:57:30 +00:00
integer_sequence
integral_constant
is_abstract
is_aggregate
is_arithmetic
is_array
is_assignable
is_base_of
is_bounded_array
is_class
is_complete_or_unbounded
is_compound
is_const
is_constant_evaluated
is_constructible libstdc++: Fix tests that fail in C++20 mode 2020-04-20 22:06:32 +01:00
is_convertible
is_copy_assignable
is_copy_constructible
is_default_constructible
is_destructible
is_empty
is_enum
is_final
is_floating_point
is_function x32 does not support MS ABI, skip testcases that require it. 2020-03-16 14:38:06 +01:00
is_fundamental
is_implicitly_default_constructible
is_integral
is_invocable
is_literal_type
is_lvalue_reference
is_member_function_pointer x32 does not support MS ABI, skip testcases that require it. 2020-03-16 14:38:06 +01:00
is_member_object_pointer
is_member_pointer
is_move_assignable
is_move_constructible
is_nothrow_assignable
is_nothrow_constructible libstdc++: Support arrays in std::is_nothrow_constructible (PR 94149) 2020-04-21 22:18:51 +01:00
is_nothrow_convertible
is_nothrow_copy_assignable
is_nothrow_copy_constructible
is_nothrow_default_constructible
is_nothrow_destructible
is_nothrow_invocable
is_nothrow_move_assignable
is_nothrow_move_constructible
is_nothrow_swappable
is_nothrow_swappable_with
is_null_pointer
is_object x32 does not support MS ABI, skip testcases that require it. 2020-03-16 14:38:06 +01:00
is_pod libstdc++: Fix testsuite failures and warnings due to is_pod deprecation 2020-01-09 21:31:50 +00:00
is_pointer
is_polymorphic
is_reference
is_rvalue_reference
is_same
is_scalar
is_signed
is_standard_layout
is_swappable
is_swappable_with
is_trivial
is_trivially_assignable
is_trivially_constructible
is_trivially_copy_assignable
is_trivially_copy_constructible
is_trivially_copyable
is_trivially_default_constructible
is_trivially_destructible
is_trivially_move_assignable
is_trivially_move_constructible
is_unbounded_array
is_union
is_unsigned
is_void
is_volatile
logical_traits
make_signed/requirements
make_unsigned/requirements
memory_resource
monotonic_buffer_resource
move
move_if_noexcept
nonesuch
optional Library-side tests for parenthesized aggregate init 2020-03-31 17:07:52 +03:00
owner_less
pair c++: Explain fn template argument type/value mismatches [PR66439] 2020-05-18 23:50:14 -04:00
pointer_safety
pointer_traits
polymorphic_allocator libstdc++: make polymorphic_allocator throw consistent type (LWG 3237) 2020-02-19 15:34:08 +00:00
rank
ratio
raw_storage_iterator
reference_wrapper
remove_all_extents
remove_const
remove_cv
remove_cvref
remove_extent
remove_pointer
remove_reference
remove_volatile
result_of
scoped_allocator
shared_ptr libstdc++: Add comparison operators to std::shared_ptr (PR 94562) 2020-04-14 21:54:55 +01:00
specialized_algorithms libstdc++: Fix regression in std::_Construct (PR 94831) 2020-04-28 23:39:38 +01:00
steady_clock
synchronized_pool_resource libstdc++: Make pmr::synchronized_pool_resource work without libpthread (PR 94936) 2020-05-04 13:37:31 +01:00
system_clock
time_point libstdc++: Add comparison operators to <chrono> types 2020-04-18 00:47:45 +01:00
time_point_cast
to_address libstdc++: Add missing feature test macros 2020-04-22 22:54:34 +01:00
to_chars libstdc++: Add comparison operators to <charconv> result types 2020-04-08 16:16:10 +01:00
tuple c++: Explain fn template argument type/value mismatches [PR66439] 2020-05-18 23:50:14 -04:00
type_identity/requirements
typeindex libstdc++: Add spaceship operator to std::type_index 2020-04-15 19:47:47 +01:00
underlying_type/requirements
unique_ptr libstdc++: Add comparison operators to std::unique_ptr 2020-04-09 21:10:32 +01:00
unsynchronized_pool_resource libstdc++: Fix -Wunused-parameter warning in test 2020-04-16 08:44:10 +01:00
unwrap_reference libstdc++: Add __cpp_lib_unwrap_ref feature test macro 2020-02-19 15:28:54 +00:00
uses_allocator Library-side tests for parenthesized aggregate init 2020-03-31 17:07:52 +03:00
variant Library-side tests for parenthesized aggregate init 2020-03-31 17:07:52 +03:00
void_t
weak_ptr
rel_ops.cc
temporary_buffer.cc
variable_templates_for_traits.cc