Fix compiler crash when funs were matched

Code such as the following would crash the compiler in OTP 22:

   [some_atom = fun some_function/1]

The reason is that the fun would be copied (used both in the match
operation and as a value in the list), and the copy of the fun would
create two wrapper functions with the same name for calling
some_function/1. In OTP 21, the duplicate functions happened not to
cause any harm (one of the wrappers functions would be unused and
ultimately be removed by beam_clean). In OTP 22, the new beam_ssa_type
pass would be confused by the multiple definitions of the wrapper
function.

0 files changed, 0 insertions, 0 deletions