inspecting std::string hogs all memory

I use qtcreator and when setting a breakpoint somewhere in the code containing a local std::string gdb lock up and start eating memory forever.

I'm sorry I can not provide any more details.

ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: gdb 7.10-1ubuntu2
ProcVersionSignature: Ubuntu 4.2.0-19.23-generic 4.2.6
Uname: Linux 4.2.0-19-generic x86_64
ApportVersion: 2.19.1-0ubuntu5
Architecture: amd64
CurrentDesktop: KDE
Date: Sun Dec 13 22:44:56 2015
InstallationDate: Installed on 2015-08-28 (107 days ago)
InstallationMedia: Kubuntu 15.10 "Wily Werewolf" - Alpha amd64 (20150828)
SourcePackage: gdb
UpgradeStatus: No upgrade log present (probably fresh install)