diff options
Diffstat (limited to 'libstdc++-v3')
-rw-r--r-- | libstdc++-v3/src/c++98/locale.cc | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/libstdc++-v3/src/c++98/locale.cc b/libstdc++-v3/src/c++98/locale.cc index d308140..1ef0c39 100644 --- a/libstdc++-v3/src/c++98/locale.cc +++ b/libstdc++-v3/src/c++98/locale.cc @@ -206,6 +206,12 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION void locale::facet::_S_initialize_once() { + // Need to check this because we could get called once from + // _S_get_c_locale() when the program is single-threaded, and then again + // (via __gthread_once) when it's multi-threaded. + if (_S_c_locale) + return; + // Initialize the underlying locale model. _S_create_c_locale(_S_c_locale, _S_c_name); } @@ -216,12 +222,9 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION #ifdef __GTHREADS if (__gthread_active_p()) __gthread_once(&_S_once, _S_initialize_once); - else #endif - { - if (!_S_c_locale) - _S_initialize_once(); - } + if (__builtin_expect (!_S_c_locale, 0)) + _S_initialize_once(); return _S_c_locale; } |