stdmap - std::map fails in gcc 4.7.4

Question

I puzzled over a simple piece of code which relates to gcc 4.7.4 installation issues or may be to an existing bug in gcc itself...? std::map does not work, the sample code below where Key, Value are both integers fails in less < operator. I have found some posts that sited some issues with comparing std::map keys in gcc 4.7, but nothing really conclusive.

compile options: g++ -g -c -std=c++11 -Wall -static-libstdc++ -o mslarblogger.o -DUSE_JEMALLOC=1 -I.

typedef std::map<int, int>  MySessionMap;

MySessionMap my_sessions_;
my_sessions_[1] = 1;
// core dumping with segmentation fault after the first insertion above in less < operator...

my_sessions_[2] = 2;
my_sessions_[3] = 3;