diff options
Diffstat (limited to 'libcxx/include/ios')
| -rw-r--r-- | libcxx/include/ios | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/libcxx/include/ios b/libcxx/include/ios index 4b1306fc2ad8..00c1d5c2d4bc 100644 --- a/libcxx/include/ios +++ b/libcxx/include/ios @@ -359,7 +359,13 @@ public: } protected: - _LIBCPP_HIDE_FROM_ABI ios_base() { // purposefully does no initialization + _LIBCPP_HIDE_FROM_ABI ios_base() : __loc_(nullptr) { + // Purposefully does no initialization + // + // Except for the locale, this is a sentinel to avoid destroying + // an uninitialized object. See + // test/libcxx/input.output/iostreams.base/ios.base/ios.base.cons/dtor.uninitialized.pass.cpp + // for the details. } void init(void* __sb); @@ -571,7 +577,9 @@ public: _LIBCPP_HIDE_FROM_ABI char_type widen(char __c) const; protected: - _LIBCPP_HIDE_FROM_ABI basic_ios() { // purposefully does no initialization + _LIBCPP_HIDE_FROM_ABI basic_ios() { + // purposefully does no initialization + // since the destructor does nothing this does not have ios_base issues. } _LIBCPP_HIDE_FROM_ABI void init(basic_streambuf<char_type, traits_type>* __sb); |