Use default visibility to work around clang -fvisibility-inlines-hidden bug

Clang (including trunk and many older versions) incorrectly marks static
local variables (__tag) hidden when -fvisibility-inlines-hidden is used.
This can lead to multiple instances of __tag when shares objects are used.

2018-07-20  Fangrui Song  <maskray@google.com>

	* include/bits/shared_ptr_base.h (_Sp_make_shared_tag::_S_ti): Use
	_GLIBCXX_VISIBILITY(default).

From-SVN: r262903

diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index 71a63db93e8666ab7dabd0faeac0cbeb15136a71..93d847a7fe41b255eef0551ac666e18520afffe5 100644 (file)
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,8 @@
+2018-07-20  Fangrui Song  <maskray@google.com>
+
+       * include/bits/shared_ptr_base.h (_Sp_make_shared_tag::_S_ti): Use
+       _GLIBCXX_VISIBILITY(default).
+
 2018-07-20  Jonathan Wakely  <jwakely@redhat.com>
 
        PR libstdc++/86603

diff --git a/libstdc++-v3/include/bits/shared_ptr_base.h b/libstdc++-v3/include/bits/shared_ptr_base.h
index f3994da158f6885e5c23230e9b4c280aaa2b54f5..870aeb9bfdacce07c8ef1e3de149d2465f5ff9dc 100644 (file)
--- a/libstdc++-v3/include/bits/shared_ptr_base.h
+++ b/libstdc++-v3/include/bits/shared_ptr_base.h
@@ -508,7 +508,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
       friend class _Sp_counted_ptr_inplace;
 
     static const type_info&
-    _S_ti() noexcept
+    _S_ti() noexcept _GLIBCXX_VISIBILITY(default)
     {
       alignas(type_info) static constexpr _Sp_make_shared_tag __tag;
       return reinterpret_cast<const type_info&>(__tag);