https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86537
Bug ID: 86537
Summary: std::less specialization for std::shared_ptr
Product: gcc
Version: 4.8.5
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: d at ilvokhin dot com
Target Milestone: ---
Created attachment 44401
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44401&action=edit
problem demonstration
There is a specialization for std::less for std::shared_ptr in
bits/shared_ptr.h. I'm not sure it is really should be there. If user defines
operator < for std::shared_ptr<user_type> some inconsistent behaviour may
occurs depending on is operator < uses directly or through std::less. There is
a reference to 20.8.13.2.7 in this header file, but I can't found nothing about
std::less specialization for std::shared_ptr in standart.
I attach a simple example.cpp file, which illustrates problem.
(I use pretty old gcc version, but this behaviour persist in most recent
versions as well)
