diff options
| author | Jonathan Wakely <jwakely@redhat.com> | 2016-09-23 18:25:23 +0100 |
|---|---|---|
| committer | Jonathan Wakely <redi@gcc.gnu.org> | 2016-09-23 18:25:23 +0100 |
| commit | a922c5ff6f3872fc9ce1e484a0e92f288ff6c68d (patch) | |
| tree | 62231e54ad2ab9735e402dda27e441a3c84f50bb /libstdc++-v3/include/bits/basic_string.tcc | |
| parent | b862552dff04fbd4c7debf07a7c82d361869a552 (diff) | |
Optimize truncating a basic_string
* include/bits/basic_string.h [_GLIBCXX_USE_CXX11_ABI]
(basic_string::erase(size_type, size_type)): Add fast path for
truncating the string, by calling _M_set_length directly.
(basic_string::erase(__const_iterator, __const_iterator)): Likewise.
* include/bits/basic_string.tcc [_GLIBCXX_USE_CXX11_ABI]
(basic_string::resize(size_type, _CharT)): Likewise.
From-SVN: r240446
Diffstat (limited to 'libstdc++-v3/include/bits/basic_string.tcc')
| -rw-r--r-- | libstdc++-v3/include/bits/basic_string.tcc | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libstdc++-v3/include/bits/basic_string.tcc b/libstdc++-v3/include/bits/basic_string.tcc index 0080d2b0e2f..df1e8ddec75 100644 --- a/libstdc++-v3/include/bits/basic_string.tcc +++ b/libstdc++-v3/include/bits/basic_string.tcc @@ -351,7 +351,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION if (__size < __n) this->append(__n - __size, __c); else if (__n < __size) - this->_M_erase(__n, __size - __n); + this->_M_set_length(__n); } template<typename _CharT, typename _Traits, typename _Alloc> |