diff options
Diffstat (limited to 'lib/compiler/src/beam_utils.erl')
| -rw-r--r-- | lib/compiler/src/beam_utils.erl | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/lib/compiler/src/beam_utils.erl b/lib/compiler/src/beam_utils.erl index 6e23003fc7..6b2ab5a2a4 100644 --- a/lib/compiler/src/beam_utils.erl +++ b/lib/compiler/src/beam_utils.erl @@ -745,8 +745,11 @@ check_liveness_block_2(R, {gc_bif,Op,{f,Lbl}}, Ss, St) -> check_liveness_block_3(R, Lbl, {Op,length(Ss)}, St); check_liveness_block_2(R, {bif,Op,{f,Lbl}}, Ss, St) -> Arity = length(Ss), + + %% Note that is_function/2 is a type test but is not safe. case erl_internal:comp_op(Op, Arity) orelse - erl_internal:new_type_test(Op, Arity) of + (erl_internal:new_type_test(Op, Arity) andalso + erl_bifs:is_safe(erlang, Op, Arity)) of true -> {killed,St}; false -> |