diff options
| -rw-r--r-- | lib/compiler/test/guard_SUITE.erl | 30 |
1 files changed, 28 insertions, 2 deletions
diff --git a/lib/compiler/test/guard_SUITE.erl b/lib/compiler/test/guard_SUITE.erl index d96cfdb7ac..7d2d58d5af 100644 --- a/lib/compiler/test/guard_SUITE.erl +++ b/lib/compiler/test/guard_SUITE.erl @@ -35,7 +35,8 @@ basic_andalso_orelse/1,traverse_dcd/1, check_qlc_hrl/1,andalso_semi/1,t_tuple_size/1,binary_part/1, bad_constants/1,bad_guards/1, - guard_in_catch/1,beam_bool_SUITE/1]). + guard_in_catch/1,beam_bool_SUITE/1, + cover_beam_dead/1]). suite() -> [{ct_hooks,[ts_install_cth]}]. @@ -54,7 +55,8 @@ groups() -> rel_ops,rel_op_combinations, literal_type_tests,basic_andalso_orelse,traverse_dcd, check_qlc_hrl,andalso_semi,t_tuple_size,binary_part, - bad_constants,bad_guards,guard_in_catch,beam_bool_SUITE]}]. + bad_constants,bad_guards,guard_in_catch,beam_bool_SUITE, + cover_beam_dead]}]. init_per_suite(Config) -> Config. @@ -2202,7 +2204,31 @@ maps() -> evidence(#{0 := Charge}) when 0; #{[] => Charge} == #{[] => 42} -> ok. +cover_beam_dead(_Config) -> + Mod = ?FUNCTION_NAME, + Attr = [], + Fs = [{function,test,1,2, + [{label,1}, + {line,[]}, + {func_info,{atom,Mod},{atom,test},1}, + {label,2}, + %% Cover beam_dead:turn_op/1 using swapped operand order. + {test,is_ne_exact,{f,3},[{integer,1},{x,0}]}, + {test,is_eq_exact,{f,1},[{atom,a},{x,0}]}, + {label,3}, + {move,{atom,ok},{x,0}}, + return]}], + Exp = [{test,1}], + Asm = {Mod,Exp,Attr,Fs,3}, + {ok,Mod,Beam} = compile:forms(Asm, [from_asm,binary,report]), + {module,Mod} = code:load_binary(Mod, Mod, Beam), + ok = Mod:test(1), + ok = Mod:test(a), + {'EXIT',_} = (catch Mod:test(other)), + true = code:delete(Mod), + _ = code:purge(Mod), + ok. %% Call this function to turn off constant propagation. id(I) -> I. |