https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71298
Bug ID: 71298 Summary: changes to libstdc++ breaks windows builds Product: gcc Version: 6.1.0 Status: UNCONFIRMED Severity: major Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: ralphengels at gmail dot com Target Milestone: --- gcc-6.1.0 libstdc++ cannot find stdlib.h on mingw-w64. the change seems to have been cstdlib where the include was changed to include_next.