Under RHEL-38861, we are implementing the POSIX rules for struct sockaddr type-based aliasing analysis. It has come to our intention that this approach is not fully compatible with -flto.

• Bug 114493 - [11/12/13/14/15 Regression] internal compiler error: in fld_incomplete_type_of with may_alias

The reproducer is quite simple. Compiling it with -flto is enough:

typedef struct git_midx_writer git_midx_writer;
int git_futils_rmdir_flags;
int __attribute__git_midx_writer_new(git_midx_writer **);
struct __attribute__((__may_alias__)) git_midx_writer {};