Hi:
I need some features for u128 support, thus we open "arbitrary_precision" feature. I already get that under "arbitrary_precision", all number is serialize/deserialize in string, but I find that the deserialize would be failed under #[serde(untagged)] struct.
like this:
serde_json version: 1.0.40
#[derive(Serialize, Deserialize, Debug)]
#[serde(untagged)]
enum Data {
Integer(u128),
Pair(String, String),
}
let d: Data = serde_json::from_str("1").unwrap();
println!("{:?}", d);this code would panic:
thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: Error("data did not match any variant of untagged enum Data", line: 0, column: 0)', src/libcore/result.rs:999:5
stack backtrace:
0: std::sys::unix::backtrace::tracing::imp::unwind_backtrace
at src/libstd/sys/unix/backtrace/tracing/gcc_s.rs:39
1: std::sys_common::backtrace::_print
at src/libstd/sys_common/backtrace.rs:71
2: std::panicking::default_hook::{{closure}}
at src/libstd/sys_common/backtrace.rs:59
at src/libstd/panicking.rs:197
3: std::panicking::default_hook
at src/libstd/panicking.rs:211
4: std::panicking::rust_panic_with_hook
at src/libstd/panicking.rs:474
5: std::panicking::continue_panic_fmt
at src/libstd/panicking.rs:381
6: rust_begin_unwind
at src/libstd/panicking.rs:308
7: core::panicking::panic_fmt
at src/libcore/panicking.rs:85
8: core::result::unwrap_failed
at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libcore/macros.rs:18
9: core::result::Result<T,E>::unwrap
at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libcore/result.rs:800
10: tmp::main
at src/main.rs:39
11: std::rt::lang_start::{{closure}}
at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/rt.rs:64
12: std::panicking::try::do_call
at src/libstd/rt.rs:49
at src/libstd/panicking.rs:293
13: __rust_maybe_catch_panic
at src/libpanic_unwind/lib.rs:85
14: std::rt::lang_start_internal
at src/libstd/panicking.rs:272
at src/libstd/panic.rs:394
at src/libstd/rt.rs:48
15: std::rt::lang_start
at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/rt.rs:64
16: main
17: __libc_start_main
18: _startI think there may be some bug in serde drive for feature "arbitrary_precision".
we must use u128 in our projects, thus this is important for us.
thank you very much!
Hi:
I need some features for u128 support, thus we open "arbitrary_precision" feature. I already get that under "arbitrary_precision", all number is serialize/deserialize in string, but I find that the deserialize would be failed under
#[serde(untagged)]struct.like this:
serde_json version: 1.0.40
this code would panic:
I think there may be some bug in serde drive for feature "arbitrary_precision".
we must use u128 in our projects, thus this is important for us.
thank you very much!