ondemand invalid free

[travisstaloch]

const simdjzon = @import("simdjzon");
const dom = simdjzon.dom;
const std = @import("std");
const testing = std.testing;
const allr = std.testing.allocator;
const ondemand = simdjzon.ondemand;

test "ondemand get with struct" {
    const S = struct { a: struct { b: []const u8 } };
    const input =
        \\{"a": {"b": "b-string"}}
    ;
    var src = std.io.StreamSource{ .const_buffer = std.io.fixedBufferStream(input) };
    var parser = try ondemand.Parser.init(&src, allr, "<fba>", .{});
    defer parser.deinit();
    var doc = try parser.iterate();

    var s: S = undefined;
    try doc.get(&s, .{ .allocator = allr });
    std.debug.print("s.a.b '{s}'\n", .{s.a.b});
    defer allr.free(s.a.b]);
    try testing.expectEqualStrings("b-string", s.a.b);
}

$ zig build test
test
└─ run test failure
thread 1154051 panic: Invalid free
~/Documents/Code/zig/zig/download/0.14.0/files/lib/std/heap/debug_allocator.zig:870:49: 0x1064377 in free (test)
            if (bucket.canary != config.canary) @panic("Invalid free");
                                                ^
~/Documents/Code/zig/zig/download/0.14.0/files/lib/std/mem/Allocator.zig:147:25: 0x108dffb in free__anon_11897 (test)
    return a.vtable.free(a.ptr, memory, alignment, ret_addr);
                        ^
/tmp/asdf2/src/main.zig:51:20: 0x110de8b in test.ondemand get with struct (test)
    defer allr.free(s.a.b);
                   ^

[travisstaloch]

I only noticed this today with zig 0.14.