v3_core: Don't depend on sys_core_fold for cleaning up

v3_core would generate unsafe code for the following example:

  f() ->
    {ok={error,E}} = foo(),
    E.

Internally, the code would look similar to:

  f() ->
    Var = foo(),
    error({badmatch,Var}),
    E.

That is, there would remain a reference to an unbound variable.
Normally, sys_core_fold would remove the reference to 'E', but if
if optimization was disabled the compiler would crash.

0 files changed, 0 insertions, 0 deletions