Hello, I've spend a lot of time to bisecting and found the first *working* commit. Which is https://github.com/gcc-mirror/gcc/commit/89d8a412de548b218cf7c967e65ad98bceb1ed4e Merge libffi to upstream commit c82cc159426d8d4402375fa1ae3f045b9cf82e16 git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@219477 138bc75d-0d04-0410-961f-82ee72b054a4 Unfortunately, I don't have an idea yet how to test further.