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Add quota for comptime sort, add test

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Simon Brown 2025-03-30 12:59:48 +01:00 committed by Alex Rønne Petersen
parent aca8ed9dec
commit e5ea175ffb
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1 changed files with 38 additions and 0 deletions
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38
lib/std/multi_array_list.zig
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@ -170,6 +170,7 @@ pub fn MultiArrayList(comptime T: type) type {
return lhs.alignment > rhs.alignment;
}
};
@setEvalBranchQuota(3 * fields.len * std.math.log2(fields.len));
mem.sort(Data, &data, {}, Sort.lessThan);
var sizes_bytes: [fields.len]usize = undefined;
var field_indexes: [fields.len]usize = undefined;
@ -978,3 +979,40 @@ test "0 sized struct" {
list.swapRemove(list.len - 1);
try testing.expectEqualSlices(u0, &[_]u0{0}, list.items(.a));
}
test "struct with many fields" {
const ManyFields = struct {
fn Type(count: comptime_int) type {
var fields: [count]std.builtin.Type.StructField = undefined;
for (0..count) |i| {
fields[i] = .{
.name = std.fmt.comptimePrint("a{}", .{i}),
.type = u32,
.default_value_ptr = null,
.is_comptime = false,
.alignment = @alignOf(u32),
};
}
const info: std.builtin.Type = .{ .@"struct" = .{
.layout = .auto,
.fields = &fields,
.decls = &.{},
.is_tuple = false,
} };
return @Type(info);
}
fn doTest(ally: std.mem.Allocator, count: comptime_int) !void {
var list: MultiArrayList(Type(count)) = .empty;
defer list.deinit(ally);
try list.resize(ally, 1);
list.items(.a0)[0] = 42;
}
};
try ManyFields.doTest(testing.allocator, 25);
try ManyFields.doTest(testing.allocator, 50);
try ManyFields.doTest(testing.allocator, 100);
try ManyFields.doTest(testing.allocator, 200);
}