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-rw-r--r--lib/compiler/src/beam_except.erl22
-rw-r--r--lib/compiler/src/beam_receive.erl2
-rw-r--r--lib/compiler/src/beam_validator.erl14
-rw-r--r--lib/compiler/src/compile.erl6
-rw-r--r--lib/compiler/src/core_lint.erl2
-rw-r--r--lib/compiler/src/sys_core_fold.erl7
-rw-r--r--lib/compiler/test/Makefile1
-rw-r--r--lib/compiler/test/compilation_SUITE.erl20
-rw-r--r--lib/compiler/test/core_fold_SUITE.erl44
-rw-r--r--lib/compiler/test/unused_multiple_values_error.core11
10 files changed, 105 insertions, 24 deletions
diff --git a/lib/compiler/src/beam_except.erl b/lib/compiler/src/beam_except.erl
index eddb41a358..e5ec1bd904 100644
--- a/lib/compiler/src/beam_except.erl
+++ b/lib/compiler/src/beam_except.erl
@@ -49,13 +49,14 @@ function({function,Name,Arity,CLabel,Is0}) ->
-record(st,
{lbl, %func_info label
- loc %location for func_info
+ loc, %location for func_info
+ arity %arity for function
}).
function_1(Is0) ->
case Is0 of
- [{label,Lbl},{line,Loc}|_] ->
- St = #st{lbl=Lbl,loc=Loc},
+ [{label,Lbl},{line,Loc},{func_info,_,_,Arity}|_] ->
+ St = #st{lbl=Lbl,loc=Loc,arity=Arity},
translate(Is0, St, []);
[{label,_}|_] ->
%% No line numbers. The source must be a .S file.
@@ -74,14 +75,14 @@ translate_1(Ar, I, Is, St, [{line,_}=Line|Acc1]=Acc0) ->
case dig_out(Ar, Acc1) of
no ->
translate(Is, St, [I|Acc0]);
- {yes,function_clause,Acc2} ->
+ {yes,{function_clause,Arity},Acc2} ->
case {Line,St} of
- {{line,Loc},#st{lbl=Fi,loc=Loc}} ->
+ {{line,Loc},#st{lbl=Fi,loc=Loc,arity=Arity}} ->
Instr = {jump,{f,Fi}},
translate(Is, St, [Instr|Acc2]);
{_,_} ->
%% This must be "error(function_clause, Args)" in
- %% the Erlang source code. Don't translate.
+ %% the Erlang source code or a fun. Don't translate.
translate(Is, St, [I|Acc0])
end;
{yes,Instr,Acc2} ->
@@ -135,11 +136,16 @@ fix_block(Is0, Words) ->
[{set,[],[],{alloc,Live,{F1,F2,Needed-Words,F3}}}|Is].
dig_out_block_fc([{set,[],[],{alloc,Live,_}}|Bl]) ->
- dig_out_fc(Bl, Live-1, nil);
+ case dig_out_fc(Bl, Live-1, nil) of
+ no ->
+ no;
+ yes ->
+ {yes,{function_clause,Live}}
+ end;
dig_out_block_fc(_) -> no.
dig_out_fc([{set,[Dst],[{x,Reg},Dst0],put_list}|Is], Reg, Dst0) ->
dig_out_fc(Is, Reg-1, Dst);
dig_out_fc([{set,[{x,0}],[{atom,function_clause}],move}], -1, {x,1}) ->
- {yes,function_clause};
+ yes;
dig_out_fc(_, _, _) -> no.
diff --git a/lib/compiler/src/beam_receive.erl b/lib/compiler/src/beam_receive.erl
index 0bb527aeb9..3dd5ed182e 100644
--- a/lib/compiler/src/beam_receive.erl
+++ b/lib/compiler/src/beam_receive.erl
@@ -249,7 +249,7 @@ opt_ref_used(Is, RefReg, Fail, D) ->
Done = gb_sets:singleton(Fail),
Regs = regs_init_x0(),
try
- opt_ref_used_1(Is, RefReg, D, Done, Regs),
+ _ = opt_ref_used_1(Is, RefReg, D, Done, Regs),
true
catch
throw:not_used ->
diff --git a/lib/compiler/src/beam_validator.erl b/lib/compiler/src/beam_validator.erl
index 58aba0b9cc..eb72290306 100644
--- a/lib/compiler/src/beam_validator.erl
+++ b/lib/compiler/src/beam_validator.erl
@@ -649,7 +649,8 @@ valfun_4(send, Vst) ->
call(send, 2, Vst);
valfun_4({set_tuple_element,Src,Tuple,I}, Vst) ->
assert_term(Src, Vst),
- assert_type({tuple_element,I+1}, Tuple, Vst);
+ assert_type({tuple_element,I+1}, Tuple, Vst),
+ Vst;
%% Match instructions.
valfun_4({select_val,Src,{f,Fail},{list,Choices}}, Vst) ->
assert_term(Src, Vst),
@@ -1044,7 +1045,7 @@ float_op(Src, Dst, Vst0) ->
assert_fls(Fls, Vst) ->
case get_fls(Vst) of
- Fls -> Vst;
+ Fls -> ok;
OtherFls -> error({bad_floating_point_state,OtherFls})
end.
@@ -1120,7 +1121,7 @@ bsm_match_state(Slots) ->
{match_context,0,Slots}.
bsm_validate_context(Reg, Vst) ->
- bsm_get_context(Reg, Vst),
+ _ = bsm_get_context(Reg, Vst),
ok.
bsm_get_context({x,X}=Reg, #vst{current=#st{x=Xs}}=_Vst) when is_integer(X) ->
@@ -1133,7 +1134,7 @@ bsm_get_context(Reg, _) -> error({bad_source,Reg}).
bsm_save(Reg, {atom,start}, Vst) ->
%% Save point refering to where the match started.
%% It is always valid. But don't forget to validate the context register.
- bsm_get_context(Reg, Vst),
+ bsm_validate_context(Reg, Vst),
Vst;
bsm_save(Reg, SavePoint, Vst) ->
case bsm_get_context(Reg, Vst) of
@@ -1146,7 +1147,7 @@ bsm_save(Reg, SavePoint, Vst) ->
bsm_restore(Reg, {atom,start}, Vst) ->
%% (Mostly) automatic save point refering to where the match started.
%% It is always valid. But don't forget to validate the context register.
- bsm_get_context(Reg, Vst),
+ bsm_validate_context(Reg, Vst),
Vst;
bsm_restore(Reg, SavePoint, Vst) ->
case bsm_get_context(Reg, Vst) of
@@ -1312,8 +1313,7 @@ assert_term(Src, Vst) ->
%%
assert_type(WantedType, Term, Vst) ->
- assert_type(WantedType, get_term_type(Term, Vst)),
- Vst.
+ assert_type(WantedType, get_term_type(Term, Vst)).
assert_type(Correct, Correct) -> ok;
assert_type(float, {float,_}) -> ok;
diff --git a/lib/compiler/src/compile.erl b/lib/compiler/src/compile.erl
index d2baf51edd..497af2b52c 100644
--- a/lib/compiler/src/compile.erl
+++ b/lib/compiler/src/compile.erl
@@ -683,7 +683,7 @@ binary_passes() ->
%% Remove the target file so we don't have an old one if the compilation fail.
remove_file(St) ->
- file:delete(St#compile.ofile),
+ _ = file:delete(St#compile.ofile),
{ok,St}.
-record(asm_module, {module,
@@ -1092,7 +1092,7 @@ makedep_output(#compile{code=Code,options=Opts,ofile=Ofile}=St) ->
io:fwrite(Output1, "~ts", [Code]),
%% Close the file if relevant.
if
- CloseOutput -> file:close(Output1);
+ CloseOutput -> ok = file:close(Output1);
true -> ok
end,
{ok,St}
@@ -1231,7 +1231,7 @@ encrypt(des3_cbc=Mode, {K1,K2,K3, IVec}, Bin0) ->
random_bytes(N) ->
{A,B,C} = now(),
- random:seed(A, B, C),
+ _ = random:seed(A, B, C),
random_bytes_1(N, []).
random_bytes_1(0, Acc) -> Acc;
diff --git a/lib/compiler/src/core_lint.erl b/lib/compiler/src/core_lint.erl
index 8b688df830..1e8983f594 100644
--- a/lib/compiler/src/core_lint.erl
+++ b/lib/compiler/src/core_lint.erl
@@ -309,7 +309,7 @@ expr(#c_fun{vars=Vs,body=B}, Def, Rt, St0) ->
{Vvs,St1} = variable_list(Vs, St0),
return_match(Rt, 1, body(B, union(Vvs, Def), any, St1));
expr(#c_seq{arg=Arg,body=B}, Def, Rt, St0) ->
- St1 = expr(Arg, Def, any, St0), %Ignore values
+ St1 = expr(Arg, Def, 1, St0),
body(B, Def, Rt, St1);
expr(#c_let{vars=Vs,arg=Arg,body=B}, Def, Rt, St0) ->
St1 = body(Arg, Def, let_varcount(Vs), St0), %This is a body
diff --git a/lib/compiler/src/sys_core_fold.erl b/lib/compiler/src/sys_core_fold.erl
index 07b054c5d7..cda3f7d81e 100644
--- a/lib/compiler/src/sys_core_fold.erl
+++ b/lib/compiler/src/sys_core_fold.erl
@@ -132,7 +132,12 @@ body(Body, Sub) ->
body(#c_values{anno=A,es=Es0}, Ctxt, Sub) ->
Es1 = expr_list(Es0, Ctxt, Sub),
- #c_values{anno=A,es=Es1};
+ case Ctxt of
+ value ->
+ #c_values{anno=A,es=Es1};
+ effect ->
+ make_effect_seq(Es1, Sub)
+ end;
body(E, Ctxt, Sub) ->
?ASSERT(verify_scope(E, Sub)),
expr(E, Ctxt, Sub).
diff --git a/lib/compiler/test/Makefile b/lib/compiler/test/Makefile
index b9c5be09ce..51b3064589 100644
--- a/lib/compiler/test/Makefile
+++ b/lib/compiler/test/Makefile
@@ -75,6 +75,7 @@ INLINE= \
CORE_MODULES = \
bs_shadowed_size_var \
+ unused_multiple_values_error \
nested_call_in_case
diff --git a/lib/compiler/test/compilation_SUITE.erl b/lib/compiler/test/compilation_SUITE.erl
index f8f74e6f7a..a62ec7ce79 100644
--- a/lib/compiler/test/compilation_SUITE.erl
+++ b/lib/compiler/test/compilation_SUITE.erl
@@ -50,7 +50,8 @@ groups() ->
trycatch_4,opt_crash,otp_5404,otp_5436,otp_5481,
otp_5553,otp_5632,otp_5714,otp_5872,otp_6121,
otp_6121a,otp_6121b,otp_7202,otp_7345,on_load,
- string_table,otp_8949_a,otp_8949_a,split_cases]}].
+ string_table,otp_8949_a,otp_8949_a,split_cases,
+ beam_utils_liveopt]}].
init_per_suite(Config) ->
Config.
@@ -683,4 +684,21 @@ do_split_cases(A) ->
end,
Z.
+-record(alarmInfo, {type,cause,origin}).
+
+beam_utils_liveopt(Config) ->
+ F = beam_utils_liveopt_fun(42, pebkac, user),
+ void = F(42, #alarmInfo{type=sctp,cause=pebkac,origin=user}),
+ ok.
+
+beam_utils_liveopt_fun(Peer, Cause, Origin) ->
+ fun(PeerNo, AlarmInfo)
+ when PeerNo == Peer andalso
+ AlarmInfo == #alarmInfo{type=sctp,
+ cause=Cause,
+ origin=Origin} ->
+ void
+ end.
+
+
id(I) -> I.
diff --git a/lib/compiler/test/core_fold_SUITE.erl b/lib/compiler/test/core_fold_SUITE.erl
index c2a592f699..abc9ab6a72 100644
--- a/lib/compiler/test/core_fold_SUITE.erl
+++ b/lib/compiler/test/core_fold_SUITE.erl
@@ -21,7 +21,8 @@
-export([all/0, suite/0,groups/0,init_per_suite/1, end_per_suite/1,
init_per_group/2,end_per_group/2,
t_element/1,setelement/1,t_length/1,append/1,t_apply/1,bifs/1,
- eq/1,nested_call_in_case/1,guard_try_catch/1,coverage/1]).
+ eq/1,nested_call_in_case/1,guard_try_catch/1,coverage/1,
+ unused_multiple_values_error/1,unused_multiple_values/1]).
-export([foo/0,foo/1,foo/2,foo/3]).
@@ -36,7 +37,8 @@ all() ->
groups() ->
[{p,test_lib:parallel(),
[t_element,setelement,t_length,append,t_apply,bifs,
- eq,nested_call_in_case,guard_try_catch,coverage]}].
+ eq,nested_call_in_case,guard_try_catch,coverage,
+ unused_multiple_values_error,unused_multiple_values]}].
init_per_suite(Config) ->
@@ -289,3 +291,41 @@ cover_is_safe_bool_expr(X) ->
end.
id(I) -> I.
+
+unused_multiple_values_error(Config) when is_list(Config) ->
+ PrivDir = ?config(priv_dir, Config),
+ Dir = filename:dirname(code:which(?MODULE)),
+ Core = filename:join(Dir, "unused_multiple_values_error"),
+ Opts = [no_copt,clint,return,from_core,{outdir,PrivDir}
+ |test_lib:opt_opts(?MODULE)],
+ {error,[{unused_multiple_values_error,
+ [{core_lint,{return_mismatch,{hello,1}}}]}],
+ []} = c:c(Core, Opts),
+ ok.
+
+unused_multiple_values(Config) when is_list(Config) ->
+ put(unused_multiple_values, []),
+ [false] = test_unused_multiple_values(false),
+ [b,a,{a,b},false] = test_unused_multiple_values({a,b}),
+ ok.
+
+test_unused_multiple_values(X) ->
+ ok = do_unused_multiple_values(X),
+ get(unused_multiple_values).
+
+do_unused_multiple_values(X) ->
+ case do_something(X) of
+ false ->
+ A = false;
+ Res ->
+ {A,B} = Res,
+ do_something(A),
+ do_something(B)
+ end,
+ _ThisShouldNotFail = A,
+ ok.
+
+do_something(I) ->
+ put(unused_multiple_values,
+ [I|get(unused_multiple_values)]),
+ I.
diff --git a/lib/compiler/test/unused_multiple_values_error.core b/lib/compiler/test/unused_multiple_values_error.core
new file mode 100644
index 0000000000..e06587c936
--- /dev/null
+++ b/lib/compiler/test/unused_multiple_values_error.core
@@ -0,0 +1,11 @@
+module 'unused_multiple_values_error' ['hello'/1]
+ attributes []
+'hello'/1 =
+ fun (_cor0) ->
+ do
+ case _cor0 of
+ <_cor0> when 'true' ->
+ <'ok','ok'>
+ end
+ 'ok'
+end
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-02 19:22:22 +0000