/usr/bin/i586-mingw32msvc-gcc-4.2.1-sjlj is in mingw32 4.2.1.dfsg-2ubuntu1.
This file is owned by root:root, with mode 0o755.
It is a symlink to /usr/bin/./usr/bin/i586-mingw32msvc-gcc
/usr/bin/./usr/bin/i586-mingw32msvc-gcc