authorgravatar for git@vexu.euVeikka Tuominen <git@vexu.eu> 2022-09-29 15:04:07+03:00
committergravatar for git@vexu.euVeikka Tuominen <git@vexu.eu> 2022-09-30 00:09:24+03:00
log409cf4aeb826d8f7c35f0aa10bb0a8fe45188555
treeb2b34588c5ec7b22c1c138cfe632c8f4eb6f2daf
parent36d2a5503705b4da03dab9dbf724653895d2b641

Sema: use correct ptr ty to check for attributes of slice field ptr

Closes #12870 Closes #13006

2 files changed, 36 insertions(+), 4 deletions(-)

src/Sema.zig+8-4
......@@ -21664,14 +21664,17 @@ fn fieldPtr(
2166421664 else
2166521665 object_ptr;
2166621666
21667 const attr_ptr_ty = if (is_pointer_to) object_ty else object_ptr_ty;
21668
2166721669 if (mem.eql(u8, field_name, "ptr")) {
2166821670 const buf = try sema.arena.create(Type.SlicePtrFieldTypeBuffer);
2166921671 const slice_ptr_ty = inner_ty.slicePtrFieldType(buf);
2167021672
2167121673 const result_ty = try Type.ptr(sema.arena, sema.mod, .{
2167221674 .pointee_type = slice_ptr_ty,
21673 .mutable = object_ptr_ty.ptrIsMutable(),
21674 .@"addrspace" = object_ptr_ty.ptrAddressSpace(),
21675 .mutable = attr_ptr_ty.ptrIsMutable(),
21676 .@"volatile" = attr_ptr_ty.isVolatilePtr(),
21677 .@"addrspace" = attr_ptr_ty.ptrAddressSpace(),
2167521678 });
2167621679
2167721680 if (try sema.resolveDefinedValue(block, object_ptr_src, inner_ptr)) |val| {
......@@ -21690,8 +21693,9 @@ fn fieldPtr(
2169021693 } else if (mem.eql(u8, field_name, "len")) {
2169121694 const result_ty = try Type.ptr(sema.arena, sema.mod, .{
2169221695 .pointee_type = Type.usize,
21693 .mutable = object_ptr_ty.ptrIsMutable(),
21694 .@"addrspace" = object_ptr_ty.ptrAddressSpace(),
21696 .mutable = attr_ptr_ty.ptrIsMutable(),
21697 .@"volatile" = attr_ptr_ty.isVolatilePtr(),
21698 .@"addrspace" = attr_ptr_ty.ptrAddressSpace(),
2169521699 });
2169621700
2169721701 if (try sema.resolveDefinedValue(block, object_ptr_src, inner_ptr)) |val| {
test/behavior/slice.zig+28
......@@ -684,3 +684,31 @@ test "slice len modification at comptime" {
684684 try expect(items[1] == 1);
685685 }
686686}
687
688test "slice field ptr const" {
689 if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // TODO
690
691 const const_slice: []const u8 = "string";
692
693 const const_ptr_const_slice = &const_slice;
694 try expectEqual(*const []const u8, @TypeOf(&const_ptr_const_slice.*));
695 try expectEqual(*const [*]const u8, @TypeOf(&const_ptr_const_slice.ptr));
696
697 var var_ptr_const_slice = &const_slice;
698 try expectEqual(*const []const u8, @TypeOf(&var_ptr_const_slice.*));
699 try expectEqual(*const [*]const u8, @TypeOf(&var_ptr_const_slice.ptr));
700}
701
702test "slice field ptr var" {
703 if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // TODO
704
705 var var_slice: []const u8 = "string";
706
707 var var_ptr_var_slice = &var_slice;
708 try expectEqual(*[]const u8, @TypeOf(&var_ptr_var_slice.*));
709 try expectEqual(*[*]const u8, @TypeOf(&var_ptr_var_slice.ptr));
710
711 const const_ptr_var_slice = &var_slice;
712 try expectEqual(*[]const u8, @TypeOf(&const_ptr_var_slice.*));
713 try expectEqual(*[*]const u8, @TypeOf(&const_ptr_var_slice.ptr));
714}