libstdc++: Only define basic_string::contains for C++23

The new contains member of the COW string is defined for non-strict
gnu++20 mode as well as for C++23 modes. I think that was left in the
committed patch unintentionally. It is inconsistent with the SSO string,
and doesn't actually compile because it uses the
basic_string_view::contains member which only defined for C++23.

This makes it only defined for C++23.

Signed-off-by: Jonathan Wakely <jwakely@redhat.com>

libstdc++-v3/ChangeLog:

	* include/bits/cow_string.h (basic_string::contains): Do not
	define for -std=gnu++20.
This commit is contained in:
Jonathan Wakely 2021-08-16 20:42:54 +01:00
parent c09cabb239
commit 3b3f2f7c26

View File

@ -2963,8 +2963,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
{ return __sv_type(this->data(), this->size()).ends_with(__x); }
#endif // C++20
#if __cplusplus >= 202011L \
|| (__cplusplus == 202002L && !defined __STRICT_ANSI__)
#if __cplusplus > 202011L
bool
contains(basic_string_view<_CharT, _Traits> __x) const noexcept
{ return __sv_type(this->data(), this->size()).contains(__x); }