http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59945
Jonathan Wakely <redi at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution|--- |DUPLICATE --- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> --- Glibc defines it: #ifdef __USE_MISC /* Old compatibility names for C types. */ typedef unsigned long int ulong; typedef unsigned short int ushort; typedef unsigned int uint; #endif __USE_MISC is defined because G++ defines _GNU_SOURCE, which is well known to cause problems, e.g. PR 11196 and PR 51749 This particular namespace pollution only occurs with C++11 because <string> only needs to #include <cstdlib> in C++11 mode to define std::to_string, std::stoi etc. but in general the problem affects C++98 too. *** This bug has been marked as a duplicate of bug 51749 ***