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std: Skip comptime struct fields in mem.zeroes() (#10406)

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closes #9934
This commit is contained in:
Ali Chraghi 2021-12-28 08:03:11 +03:30 committed by Andrew Kelley
parent 4d9377923d
commit b86aadfa38
1 changed files with 6 additions and 1 deletions
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7
lib/std/mem.zig
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@ -275,7 +275,9 @@ pub fn zeroes(comptime T: type) T {
} else { } else {
var structure: T = undefined; var structure: T = undefined;
inline for (struct_info.fields) |field| { inline for (struct_info.fields) |field| {
@field(structure, field.name) = zeroes(@TypeOf(@field(structure, field.name))); if (!field.is_comptime) {
@field(structure, field.name) = zeroes(@TypeOf(@field(structure, field.name)));
}
} }
return structure; return structure;
} }
@ -342,6 +344,8 @@ test "mem.zeroes" {
try testing.expect(a.y == 10); try testing.expect(a.y == 10);
const ZigStruct = struct { const ZigStruct = struct {
comptime comptime_field: u8 = 5,
integral_types: struct { integral_types: struct {
integer_0: i0, integer_0: i0,
integer_8: i8, integer_8: i8,
@ -376,6 +380,7 @@ test "mem.zeroes" {
}; };
const b = zeroes(ZigStruct); const b = zeroes(ZigStruct);
try testing.expectEqual(@as(u8, 5), b.comptime_field);
try testing.expectEqual(@as(i8, 0), b.integral_types.integer_0); try testing.expectEqual(@as(i8, 0), b.integral_types.integer_0);
try testing.expectEqual(@as(i8, 0), b.integral_types.integer_8); try testing.expectEqual(@as(i8, 0), b.integral_types.integer_8);
try testing.expectEqual(@as(i16, 0), b.integral_types.integer_16); try testing.expectEqual(@as(i16, 0), b.integral_types.integer_16);