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Add some logging useful in debugging #1373

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Ended up helping diagnose the problem in the end!
This commit is contained in:
Alex Crichton 2019-03-21 08:30:30 -07:00
parent d49d8c9e1b
commit 12355ce81c
2 changed files with 9 additions and 5 deletions
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11
crates/cli-support/src/decode.rs
View File

@ -42,16 +42,15 @@ impl<'src> Decode<'src> for &'src str {
let n = u32::decode(data);
let (a, b) = data.split_at(n as usize);
*data = b;
str::from_utf8(a).unwrap()
let r = str::from_utf8(a).unwrap();
log::trace!("decoded string {:?}", r);
r
}
}
impl<'src> Decode<'src> for String {
fn decode(data: &mut &'src [u8]) -> String {
let n = u32::decode(data);
let (a, b) = data.split_at(n as usize);
*data = b;
String::from_utf8(a.to_vec()).unwrap()
<&'src str>::decode(data).to_string()
}
}
@ -59,6 +58,7 @@ impl<'src, T: Decode<'src>> Decode<'src> for Vec<T> {
fn decode(data: &mut &'src [u8]) -> Self {
let n = u32::decode(data);
let mut v = Vec::with_capacity(n as usize);
log::trace!("found a list of length {}", n);
for _ in 0..n {
v.push(Decode::decode(data));
}
@ -84,6 +84,7 @@ macro_rules! decode_struct {
impl <'a> Decode<'a> for $name <$($lt)*> {
fn decode(_data: &mut &'a [u8]) -> Self {
log::trace!("start decode `{}`", stringify!($name));
$name {
$($field: Decode::decode(_data),)*
}

3
crates/cli-support/src/lib.rs
View File

@ -477,6 +477,7 @@ fn extract_programs<'a>(
continue;
}
to_remove.push(i);
log::debug!("custom section {} looks like a wasm bindgen section", i);
program_storage.push(mem::replace(&mut custom.value, Vec::new()));
}
@ -532,6 +533,7 @@ to open an issue at https://github.com/rustwasm/wasm-bindgen/issues!
);
}
let next = get_remaining(&mut payload).unwrap();
log::debug!("found a program of length {}", next.len());
ret.push(<decode::Program as decode::Decode>::decode_all(next));
}
}
@ -561,6 +563,7 @@ fn verify_schema_matches<'a>(data: &'a [u8]) -> Result<Option<&'a str>, Error> {
Ok(s) => s,
Err(_) => bad!(),
};
log::debug!("found version specifier {}", data);
if !data.starts_with("{") || !data.ends_with("}") {
bad!()
}