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Support -C save-temps in rustdoc

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This allows viewing failed merged doctests.
This commit is contained in:
Jynn Nelson 2025-12-03 15:48:16 -05:00
parent 29f31f1662
commit 3aa4ece95d
1 changed files with 12 additions and 4 deletions
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16
src/librustdoc/doctest.rs
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@ -123,8 +123,13 @@ pub(crate) fn generate_args_file(file_path: &Path, options: &RustdocOptions) ->
Ok(())
}
fn get_doctest_dir() -> io::Result<TempDir> {
TempFileBuilder::new().prefix("rustdoctest").tempdir()
fn get_doctest_dir(opts: &RustdocOptions) -> io::Result<TempDir> {
let mut builder = TempFileBuilder::new();
builder.prefix("rustdoctest");
if opts.codegen_options.save_temps {
builder.disable_cleanup(true);
}
builder.tempdir()
}
pub(crate) fn run(dcx: DiagCtxtHandle<'_>, input: Input, options: RustdocOptions) {
@ -197,7 +202,7 @@ pub(crate) fn run(dcx: DiagCtxtHandle<'_>, input: Input, options: RustdocOptions
let externs = options.externs.clone();
let json_unused_externs = options.json_unused_externs;
let temp_dir = match get_doctest_dir()
let temp_dir = match get_doctest_dir(&options)
.map_err(|error| format!("failed to create temporary directory: {error:?}"))
{
Ok(temp_dir) => temp_dir,
@ -207,6 +212,7 @@ pub(crate) fn run(dcx: DiagCtxtHandle<'_>, input: Input, options: RustdocOptions
crate::wrap_return(dcx, generate_args_file(&args_path, &options));
let extract_doctests = options.output_format == OutputFormat::Doctest;
let save_temps = options.codegen_options.save_temps;
let result = interface::run_compiler(config, |compiler| {
let krate = rustc_interface::passes::parse(&compiler.sess);
@ -259,7 +265,9 @@ pub(crate) fn run(dcx: DiagCtxtHandle<'_>, input: Input, options: RustdocOptions
eprintln!("{error}");
// Since some files in the temporary folder are still owned and alive, we need
// to manually remove the folder.
let _ = std::fs::remove_dir_all(temp_dir.path());
if !save_temps {
let _ = std::fs::remove_dir_all(temp_dir.path());
}
std::process::exit(1);
}
};