diff options
Diffstat (limited to 'lib/compiler/src/beam_utils.erl')
| -rw-r--r-- | lib/compiler/src/beam_utils.erl | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/lib/compiler/src/beam_utils.erl b/lib/compiler/src/beam_utils.erl index a631b8cd69..116ede0bc9 100644 --- a/lib/compiler/src/beam_utils.erl +++ b/lib/compiler/src/beam_utils.erl @@ -474,8 +474,15 @@ check_liveness(R, [{make_fun2,_,_,_,NumFree}|Is], St) -> end; check_liveness(R, [{try_end,Y}|Is], St) -> case R of - Y -> {killed,St}; - _ -> check_liveness(R, Is, St) + Y -> + {killed,St}; + {y,_} -> + %% y registers will be used if an exception occurs and + %% control transfers to the label given in the previous + %% try/2 instruction. + {used,St}; + _ -> + check_liveness(R, Is, St) end; check_liveness(R, [{catch_end,Y}|Is], St) -> case R of |