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feat(proc-macro-srv): support metadata version 10

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Signed-off-by: Prajwal S N <prajwalnadig21@gmail.com>
This commit is contained in:
Prajwal S N 2025-04-03 14:57:33 +05:30
parent e02d76aa61
commit 094407aba4
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GPG key ID: 60701A603988FAC2
1 changed files with 4 additions and 4 deletions
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8
crates/proc-macro-srv/src/dylib/version.rs
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@ -27,7 +27,7 @@ pub fn read_dylib_info(obj: &object::File<'_>) -> io::Result<RustCInfo> {
let mut items = ver_str.split_whitespace();
let tag = items.next().ok_or_else(|| err!("version format error"))?;
if tag != "rustc" {
return Err(err!("version format error (No rustc tag)"));
return Err(err!("no rustc tag"));
}
let version_part = items.next().ok_or_else(|| err!("no version string"))?;
@ -83,7 +83,7 @@ fn read_section<'a>(obj: &object::File<'a>, section_name: &str) -> io::Result<&'
/// A proc macro crate binary's ".rustc" section has following byte layout:
/// * [b'r',b'u',b's',b't',0,0,0,5] is the first 8 bytes
/// * ff060000 734e6150 is followed, it's the snappy format magic bytes,
/// means bytes from here(including this sequence) are compressed in
/// means bytes from here (including this sequence) are compressed in
/// snappy compression format. Version info is inside here, so decompress
/// this.
///
@ -110,7 +110,7 @@ pub fn read_version(obj: &object::File<'_>) -> io::Result<String> {
));
}
let version = u32::from_be_bytes([dot_rustc[4], dot_rustc[5], dot_rustc[6], dot_rustc[7]]);
// Last supported version is:
// Last version with breaking changes is:
// https://github.com/rust-lang/rust/commit/b94cfefc860715fb2adf72a6955423d384c69318
let (mut metadata_portion, bytes_before_version) = match version {
8 => {
@ -118,7 +118,7 @@ pub fn read_version(obj: &object::File<'_>) -> io::Result<String> {
let data_len = u32::from_be_bytes(len_bytes.try_into().unwrap()) as usize;
(&dot_rustc[12..data_len + 12], 13)
}
9 => {
9 | 10 => {
let len_bytes = &dot_rustc[8..16];
let data_len = u64::from_le_bytes(len_bytes.try_into().unwrap()) as usize;
(&dot_rustc[16..data_len + 12], 17)