http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52015
--- Comment #40 from Roman <roman.vasiliev at gmail dot com> --- (In reply to Jonathan Wakely from comment #36) > (In reply to Roman from comment #35) > > Tried to apply proposed patch for MinGW 4.8.1 and received no positive > > effect. Compiler tells about error : 'stoi' was not declared in this scope. > > Have any Idea how to fix it? > > Not enough information to be useful. > > Did you even use -std=c++11 ? Yes, shure. > > Noone here can debug your modified sources, you'll have to look into what is > or isn't defined on your system after the patch. Try looking at the > preprocessed source, for example. I'm not familiar with such a matter. Attached files are: stoi.cpp is initial code stoi_prep.cpp is result of g++ stoi.cpp -E > stoi_prep.cpp stoi_prep11.cpp is result of g++ stoi.cpp -E -std=c++11 > stoi_prep11.cpp