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-rw-r--r--lib/compiler/src/sys_core_fold.erl43
-rw-r--r--lib/compiler/src/v3_codegen.erl4
-rw-r--r--lib/compiler/src/v3_core.erl34
-rw-r--r--lib/compiler/src/v3_kernel.erl3
-rw-r--r--lib/compiler/src/v3_life.erl3
5 files changed, 56 insertions, 31 deletions
diff --git a/lib/compiler/src/sys_core_fold.erl b/lib/compiler/src/sys_core_fold.erl
index 52d6dfe184..b7422318b2 100644
--- a/lib/compiler/src/sys_core_fold.erl
+++ b/lib/compiler/src/sys_core_fold.erl
@@ -2031,9 +2031,9 @@ case_opt(Arg, Cs0, Sub) ->
case_opt_args([A0|As0], Cs0, Sub, LitExpr, Acc) ->
case case_opt_arg(A0, Sub, Cs0, LitExpr) of
- error ->
+ {error,Cs1} ->
%% Nothing to be done. Move on to the next argument.
- Cs = [{Ps,C,[P|PsAcc],Bs} || {[P|Ps],C,PsAcc,Bs} <- Cs0],
+ Cs = [{Ps,C,[P|PsAcc],Bs} || {[P|Ps],C,PsAcc,Bs} <- Cs1],
case_opt_args(As0, Cs, Sub, LitExpr, [A0|Acc]);
{ok,As1,Cs} ->
%% The argument was either expanded (from tuple/list) or
@@ -2052,7 +2052,7 @@ case_opt_arg(E0, Sub, Cs, LitExpr) ->
E = maybe_replace_var(E0, Sub),
case cerl:is_data(E) of
false ->
- error;
+ {error,Cs};
true ->
case cerl:data_type(E) of
{atomic,_} ->
@@ -2102,35 +2102,44 @@ maybe_replace_var_1(E, #sub{t=Tdb}) ->
%% pattern matching is tricky, so we will give up in that case.
case_opt_lit(Lit, Cs0, LitExpr) ->
- try case_opt_lit_1(Cs0, Lit, LitExpr) of
+ Cs1 = case_opt_lit_1(Lit, Cs0, LitExpr),
+ try case_opt_lit_2(Lit, Cs1) of
Cs ->
{ok,[],Cs}
catch
throw:impossible ->
- error
+ {error,Cs1}
end.
-case_opt_lit_1([{[P|Ps],C,PsAcc,Bs0}|Cs], E, LitExpr) ->
+case_opt_lit_1(E, [{[P|_],C,_,_}=Current|Cs], LitExpr) ->
+ case cerl_clauses:match(P, E) of
+ none ->
+ %% The pattern will not match the literal. Remove the clause.
+ %% Unless the entire case expression is a literal, also
+ %% emit a warning.
+ case LitExpr of
+ false -> add_warning(C, nomatch_clause_type);
+ true -> ok
+ end,
+ case_opt_lit_1(E, Cs, LitExpr);
+ _ ->
+ [Current|case_opt_lit_1(E, Cs, LitExpr)]
+ end;
+case_opt_lit_1(_, [], _) -> [].
+
+case_opt_lit_2(E, [{[P|Ps],C,PsAcc,Bs0}|Cs]) ->
+ %% Non-matching clauses have already been removed in case_opt_lit_1/3.
case cerl_clauses:match(P, E) of
- none ->
- %% The pattern will not match the literal. Remove the clause.
- %% Unless the entire case expression is a literal, also
- %% emit a warning.
- case LitExpr of
- false -> add_warning(C, nomatch_clause_type);
- true -> ok
- end,
- case_opt_lit_1(Cs, E, LitExpr);
{true,Bs} ->
%% The pattern matches the literal. Remove the pattern
%% and update the bindings.
- [{Ps,C,PsAcc,Bs++Bs0}|case_opt_lit_1(Cs, E, LitExpr)];
+ [{Ps,C,PsAcc,Bs++Bs0}|case_opt_lit_2(E, Cs)];
{false,_} ->
%% Binary literal and pattern. We are not sure whether
%% the pattern will match.
throw(impossible)
end;
-case_opt_lit_1([], _, _) -> [].
+case_opt_lit_2(_, []) -> [].
%% case_opt_data(Expr, Clauses0, LitExpr) -> {ok,Exprs,Clauses}
diff --git a/lib/compiler/src/v3_codegen.erl b/lib/compiler/src/v3_codegen.erl
index f1331d1fe7..47a357c23d 100644
--- a/lib/compiler/src/v3_codegen.erl
+++ b/lib/compiler/src/v3_codegen.erl
@@ -960,7 +960,6 @@ select_extract_map(Src, Vs, Fail, I, Vdb, Bef, St) ->
end, {{[],[]},Bef}, Vs),
Code = case {HasKs,GetVs} of
- {[],[]} -> {[],Aft,St};
{HasKs,[]} ->
[{test,has_map_fields,{f,Fail},Rsrc,{list,HasKs}}];
{[],GetVs} ->
@@ -1553,8 +1552,7 @@ map_pair_strip_and_termsort(Es) ->
Ls = [{K,V}||{_,K,V}<-Es],
lists:sort(fun ({{_,A},_}, {{_,B},_}) -> erts_internal:cmp_term(A,B) =< 0;
({nil,_}, {{_,B},_}) -> [] =< B;
- ({{_,A},_}, {nil,_}) -> A =< [];
- ({nil,_}, {nil,_}) -> true
+ ({{_,A},_}, {nil,_}) -> A =< []
end, Ls).
%%%
diff --git a/lib/compiler/src/v3_core.erl b/lib/compiler/src/v3_core.erl
index 04210ae243..a548ba2f7c 100644
--- a/lib/compiler/src/v3_core.erl
+++ b/lib/compiler/src/v3_core.erl
@@ -514,15 +514,26 @@ expr({tuple,L,Es0}, St0) ->
expr({map,L,Es0}, St0) ->
% erl_lint should make sure only #{ K => V } are allowed
% in map construction.
- {Es1,Eps,St1} = map_pair_list(Es0, St0),
- A = lineno_anno(L, St1),
- {ann_c_map(A,Es1),Eps,St1};
+ try map_pair_list(Es0, St0) of
+ {Es1,Eps,St1} ->
+ A = lineno_anno(L, St1),
+ {ann_c_map(A,Es1),Eps,St1}
+ catch
+ throw:{bad_map,Warning} ->
+ St = add_warning(L, Warning, St0),
+ LineAnno = lineno_anno(L, St),
+ As = [#c_literal{anno=LineAnno,val=badarg}],
+ {#icall{anno=#a{anno=LineAnno}, %Must have an #a{}
+ module=#c_literal{anno=LineAnno,val=erlang},
+ name=#c_literal{anno=LineAnno,val=error},
+ args=As},[],St}
+ end;
expr({map,L,M0,Es0}, St0) ->
try expr_map(M0,Es0,lineno_anno(L, St0),St0) of
{_,_,_}=Res -> Res
catch
- throw:bad_map ->
- St = add_warning(L, bad_map, St0),
+ throw:{bad_map,Warning} ->
+ St = add_warning(L, Warning, St0),
LineAnno = lineno_anno(L, St),
As = [#c_literal{anno=LineAnno,val=badarg}],
{#icall{anno=#a{anno=LineAnno}, %Must have an #a{}
@@ -762,7 +773,7 @@ expr_map(M0,Es0,A,St0) ->
{Es1,Eps,St2} = map_pair_list(Es0, St1),
{ann_c_map(A,M1,Es1),Mps++Eps,St2}
end;
- false -> throw(bad_map)
+ false -> throw({bad_map,bad_map})
end.
is_valid_map_src(#c_literal{val = M}) when is_map(M) -> true;
@@ -774,18 +785,23 @@ map_pair_list(Es, St) ->
foldr(fun
({map_field_assoc,L,K0,V0}, {Ces,Esp,St0}) ->
{K,Ep0,St1} = safe(K0, St0),
+ ok = ensure_valid_map_key(K),
{V,Ep1,St2} = safe(V0, St1),
A = lineno_anno(L, St2),
Pair = #c_map_pair{op=#c_literal{val=assoc},anno=A,key=K,val=V},
{[Pair|Ces],Ep0 ++ Ep1 ++ Esp,St2};
({map_field_exact,L,K0,V0}, {Ces,Esp,St0}) ->
{K,Ep0,St1} = safe(K0, St0),
+ ok = ensure_valid_map_key(K),
{V,Ep1,St2} = safe(V0, St1),
A = lineno_anno(L, St2),
Pair = #c_map_pair{op=#c_literal{val=exact},anno=A,key=K,val=V},
{[Pair|Ces],Ep0 ++ Ep1 ++ Esp,St2}
end, {[],[],St}, Es).
+ensure_valid_map_key(#c_literal{}) -> ok;
+ensure_valid_map_key(_) -> throw({bad_map,bad_map_key}).
+
%% try_exception([ExcpClause], St) -> {[ExcpVar],Handler,St}.
try_exception(Ecs0, St0) ->
@@ -1595,7 +1611,9 @@ pattern_map_pair({map_field_exact,L,K,V}, St) ->
{bin,L,Es0} ->
case constant_bin(Es0) of
error ->
- throw(badmatch);
+ %% this will throw a cryptic error message
+ %% but it is better than nothing
+ throw(nomatch);
Bin ->
#c_literal{anno=lineno_anno(L,St),val=Bin}
end;
@@ -2299,6 +2317,8 @@ format_error(nomatch) ->
"pattern cannot possibly match";
format_error(bad_binary) ->
"binary construction will fail because of a type mismatch";
+format_error(bad_map_key) ->
+ "map construction will fail because of none literal key (large binaries are not literals)";
format_error(bad_map) ->
"map construction will fail because of a type mismatch".
diff --git a/lib/compiler/src/v3_kernel.erl b/lib/compiler/src/v3_kernel.erl
index d3b785aa14..40d2f72b4c 100644
--- a/lib/compiler/src/v3_kernel.erl
+++ b/lib/compiler/src/v3_kernel.erl
@@ -581,8 +581,7 @@ map_key_clean(#k_literal{val=V}) -> {k_literal,V};
map_key_clean(#k_int{val=V}) -> {k_int,V};
map_key_clean(#k_float{val=V}) -> {k_float,V};
map_key_clean(#k_atom{val=V}) -> {k_atom,V};
-map_key_clean(#k_nil{}) -> k_nil;
-map_key_clean(#k_var{name=V}) -> {k_var,V}.
+map_key_clean(#k_nil{}) -> k_nil.
%% call_type(Module, Function, Arity) -> call | bif | apply | error.
diff --git a/lib/compiler/src/v3_life.erl b/lib/compiler/src/v3_life.erl
index c4f54a7970..cd4b5fd674 100644
--- a/lib/compiler/src/v3_life.erl
+++ b/lib/compiler/src/v3_life.erl
@@ -324,8 +324,7 @@ type(k_binary) -> binary;
type(k_bin_seg) -> bin_seg;
type(k_bin_int) -> bin_int;
type(k_bin_end) -> bin_end;
-type(k_map) -> map;
-type(k_map_pair) -> map_pair.
+type(k_map) -> map.
%% variable(Klit) -> Lit.
%% var_list([Klit]) -> [Lit].
generated by cgit v1.2.3 (git 2.25.1) at 2025-05-04 17:19:19 +0000