https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68058
Bug ID: 68058
Summary: _GLIBCXX_BEGIN_NAMESPACE_VERSION breaks regex
Product: gcc
Version: 5.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: dmorilha at gmail dot com
Target Milestone: ---
when compiling libstdc++ with --enable-symvers=gnu-versioned-namespace
std::regex complaining about private data members trying to be accessed outside
the class:
22:55:46 /home/y/include/c++/4.9.2/bits/regex.h:796:30: error:
‘std::__7::basic_regex<char>::_AutomatonPtr
std::__7::basic_regex<char>::_M_automaton’ is protected
22:55:46 _AutomatonPtr _M_automaton;
I believe the bug is related with the __detail namespace[1] and friend
classes[2] as it lacks the NAMESPACE_VERSION expansion. This happens in other
lines and I believe it extends to hashmap as well. Turning data members public
"fixes" the compilation problem.
[1]:
https://github.com/gcc-mirror/gcc/blob/e0f174323b4297f46d9109201666da42aaa55fc8/libstdc%2B%2B-v3/include/bits/regex.h#L46
[2]:
https://github.com/gcc-mirror/gcc/blob/e0f174323b4297f46d9109201666da42aaa55fc8/libstdc%2B%2B-v3/include/bits/regex.h#L772
