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Auto merge of #132402 - bjorn3:remove_snap_decompression, r=jieyouxu,Veykril
Remove support for decompressing dylib metadata
We haven't been compressing dylib metadata for a while now. Removing decompression support will regress error messages about an incompatible rustc version being used, but dylibs are pretty rare anyway.
Fixes https://github.com/rust-lang/rust-analyzer/issues/18451
| -rw-r--r-- | Cargo.lock | 7 | ||||
| -rw-r--r-- | Cargo.toml | 1 | ||||
| -rw-r--r-- | crates/proc-macro-srv/Cargo.toml | 1 | ||||
| -rw-r--r-- | crates/proc-macro-srv/src/dylib/version.rs | 17 |
4 files changed, 4 insertions, 22 deletions
diff --git a/Cargo.lock b/Cargo.lock index 695c37f6d7..424357e847 100644 --- a/Cargo.lock +++ b/Cargo.lock @@ -1364,7 +1364,6 @@ dependencies = [ "proc-macro-api", "proc-macro-test", "ra-ap-rustc_lexer", - "snap", "span", "stdx", "syntax-bridge", @@ -1889,12 +1888,6 @@ dependencies = [ ] [[package]] -name = "snap" -version = "1.1.1" -source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "1b6b67fb9a61334225b5b790716f609cd58395f895b3fe8b328786812a40bc3b" - -[[package]] name = "span" version = "0.0.0" dependencies = [ diff --git a/Cargo.toml b/Cargo.toml index 3aa93b7b7b..1099d2cb91 100644 --- a/Cargo.toml +++ b/Cargo.toml @@ -145,7 +145,6 @@ smallvec = { version = "1.10.0", features = [ "const_generics", ] } smol_str = "0.3.2" -snap = "1.1.0" text-size = "1.1.1" tracing = "0.1.40" tracing-tree = "0.3.0" diff --git a/crates/proc-macro-srv/Cargo.toml b/crates/proc-macro-srv/Cargo.toml index e8d9677c92..4fabcc9006 100644 --- a/crates/proc-macro-srv/Cargo.toml +++ b/crates/proc-macro-srv/Cargo.toml @@ -16,7 +16,6 @@ doctest = false object.workspace = true libloading.workspace = true memmap2.workspace = true -snap.workspace = true stdx.workspace = true tt.workspace = true diff --git a/crates/proc-macro-srv/src/dylib/version.rs b/crates/proc-macro-srv/src/dylib/version.rs index 1f7ef7914b..7f0e95c50d 100644 --- a/crates/proc-macro-srv/src/dylib/version.rs +++ b/crates/proc-macro-srv/src/dylib/version.rs @@ -8,7 +8,6 @@ use std::{ use memmap2::Mmap; use object::read::{File as BinaryFile, Object, ObjectSection}; use paths::AbsPath; -use snap::read::FrameDecoder as SnapDecoder; #[derive(Debug)] #[allow(dead_code)] @@ -123,9 +122,8 @@ pub fn read_version(dylib_path: &AbsPath) -> 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: // https://github.com/rust-lang/rust/commit/b94cfefc860715fb2adf72a6955423d384c69318 - let (snappy_portion, bytes_before_version) = match version { - 5 | 6 => (&dot_rustc[8..], 13), - 7 | 8 => { + let (mut metadata_portion, bytes_before_version) = match version { + 8 => { let len_bytes = &dot_rustc[8..12]; let data_len = u32::from_be_bytes(len_bytes.try_into().unwrap()) as usize; (&dot_rustc[12..data_len + 12], 13) @@ -143,13 +141,6 @@ pub fn read_version(dylib_path: &AbsPath) -> io::Result<String> { } }; - let mut uncompressed: Box<dyn Read> = if &snappy_portion[0..4] == b"rust" { - // Not compressed. - Box::new(snappy_portion) - } else { - Box::new(SnapDecoder::new(snappy_portion)) - }; - // We're going to skip over the bytes before the version string, so basically: // 8 bytes for [b'r',b'u',b's',b't',0,0,0,5] // 4 or 8 bytes for [crate root bytes] @@ -157,11 +148,11 @@ pub fn read_version(dylib_path: &AbsPath) -> io::Result<String> { // so 13 or 17 bytes in total, and we should check the last of those bytes // to know the length let mut bytes = [0u8; 17]; - uncompressed.read_exact(&mut bytes[..bytes_before_version])?; + metadata_portion.read_exact(&mut bytes[..bytes_before_version])?; let length = bytes[bytes_before_version - 1]; let mut version_string_utf8 = vec![0u8; length as usize]; - uncompressed.read_exact(&mut version_string_utf8)?; + metadata_portion.read_exact(&mut version_string_utf8)?; let version_string = String::from_utf8(version_string_utf8); version_string.map_err(|e| io::Error::new(io::ErrorKind::InvalidData, e)) } |