On Monday 18 January 2016 15:39:11 Thiago Macieira wrote: > On Monday 18 January 2016 23:43:37 Marc Mutz wrote: > > a) std::string is not a movable type (at least I get a heap corruption > > when > > marking it as such in GCC 5.3) > > It used to be in C++98 and it is with libc++. The new C++11 std::string from > libstdc++ is not relocatable. They implemented SSO by storing the "begin" > pointer pointing to itself, so that the common operation of getting the > begin pointer does not need a conditional.
Note that this is exactly how Qt 4's QString knew whether the data was allocated by itself or it was fromRawData. The Qt 5 one doesn't store the pointer, but an offset from the data would be, so offset == 0 means "allocated". -- Thiago Macieira - thiago.macieira (AT) intel.com Software Architect - Intel Open Source Technology Center _______________________________________________ Development mailing list Development@qt-project.org http://lists.qt-project.org/mailman/listinfo/development
