https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61514
Bug ID: 61514 Summary: -ftree-vectorize cause bogus "duplicate section ... has different size" on windows x64 Product: gcc Version: 4.8.3 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: blaffablaffa at gmail dot com some other instances: http://stackoverflow.com/q/14181351/1073006 http://stackoverflow.com/q/11635485/1073006 In my case the duplicated section is related to guard variable of a static function variable. I haven't been able to reduce this to a small test case, because being something related to optimization it's being very sensitive to the actual code being compiled. My code is located on github: wget https://github.com/pisto/spaghettimod/archive/4342b93933ce8d9f18c1bc2cc35db3e689a6d101.zip -O spaghetti.zip unzip spaghetti.zip rm spaghetti.zip cd spaghetti* make PLATFORM=x86_64-w64-mingw32 (you'll need a working `pkg-config lua`).