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Merge #11365
11365: Add a way to disable dll copying for users of proc_macro_srv library r=lnicola a=vlad20012
We use `ra_ap_proc_macro_srv` library in IntelliJ Rust in order to expand proc macros. We need a way to disable [DLL copying to a temp dir on Windows](https://github.com/rust-analyzer/rust-analyzer/blob/master/crates/proc_macro_srv/src/dylib.rs#L166) behavior because it causes issues like https://github.com/intellij-rust/intellij-rust/issues/7709. Unlike RA, file locking is not an issue for IntelliJ Rust because we copy DLLs to a temp dir before calling the expander.
Co-authored-by: vlad20012 <[email protected]>
| -rw-r--r-- | crates/proc_macro_srv/src/dylib.rs | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/crates/proc_macro_srv/src/dylib.rs b/crates/proc_macro_srv/src/dylib.rs index ab13e66fb8..cc0b816a53 100644 --- a/crates/proc_macro_srv/src/dylib.rs +++ b/crates/proc_macro_srv/src/dylib.rs @@ -168,6 +168,10 @@ fn ensure_file_with_lock_free_access(path: &Path) -> io::Result<PathBuf> { use std::ffi::OsString; use std::hash::{BuildHasher, Hasher}; + if std::env::var("RA_DONT_COPY_PROC_MACRO_DLL").is_ok() { + return Ok(path.to_path_buf()); + } + let mut to = std::env::temp_dir(); let file_name = path.file_name().ok_or_else(|| { |