http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47528
--- Comment #11 from Dongsheng Song <dongsheng.song at gmail dot com> 2011-02-08 11:04:32 UTC --- I don't known where I report the following issue: C:\>gcc -O2 -pipe Hello.c C:\>a Hello, World! C:\>gcc -O2 -pipe -flto Hello.c c:/gcc-4.6-windows/bin/../lib/gcc/i686-w64-mingw32/4.6.0/../../../../i686-w64-mingw32/bin/ld.exe: could not unlink output file collect2: ld returned 1 exit status
