bjoernager/rust
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Write to stdout if - is given as output file

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If `-o -` or `--emit KIND=-` is provided, output will be written
to stdout instead. Binary output (`obj`, `llvm-bc`, `link` and
`metadata`) being written this way will result in an error unless
stdout is not a tty. Multiple output types going to stdout will
trigger an error too, as they will all be mixded together.
This commit is contained in:
Jing Peng 2023-02-26 15:27:27 -05:00
parent 1221e43bdf
commit 9b1a1e1d95
32 changed files with 456 additions and 101 deletions
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23
compiler/rustc_codegen_ssa/src/back/write.rs
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@ -23,12 +23,13 @@ use rustc_hir::def_id::{CrateNum, LOCAL_CRATE};
use rustc_incremental::{
copy_cgu_workproduct_to_incr_comp_cache_dir, in_incr_comp_dir, in_incr_comp_dir_sess,
};
use rustc_metadata::fs::copy_to_stdout;
use rustc_metadata::EncodedMetadata;
use rustc_middle::dep_graph::{WorkProduct, WorkProductId};
use rustc_middle::middle::exported_symbols::SymbolExportInfo;
use rustc_middle::ty::TyCtxt;
use rustc_session::cgu_reuse_tracker::CguReuseTracker;
use rustc_session::config::{self, CrateType, Lto, OutputFilenames, OutputType};
use rustc_session::config::{self, CrateType, Lto, OutFileName, OutputFilenames, OutputType};
use rustc_session::config::{Passes, SwitchWithOptPath};
use rustc_session::Session;
use rustc_span::source_map::SourceMap;
@ -535,9 +536,16 @@ fn produce_final_output_artifacts(
let mut user_wants_objects = false;
// Produce final compile outputs.
let copy_gracefully = |from: &Path, to: &Path| {
if let Err(e) = fs::copy(from, to) {
sess.emit_err(errors::CopyPath::new(from, to, e));
let copy_gracefully = |from: &Path, to: &OutFileName| match to {
OutFileName::Stdout => {
if let Err(e) = copy_to_stdout(from) {
sess.emit_err(errors::CopyPath::new(from, to.as_path(), e));
}
}
OutFileName::Real(path) => {
if let Err(e) = fs::copy(from, path) {
sess.emit_err(errors::CopyPath::new(from, path, e));
}
}
};
@ -547,7 +555,12 @@ fn produce_final_output_artifacts(
// to copy `foo.0.x` to `foo.x`.
let module_name = Some(&compiled_modules.modules[0].name[..]);
let path = crate_output.temp_path(output_type, module_name);
copy_gracefully(&path, &crate_output.path(output_type));
let output = crate_output.path(output_type);
if !output_type.is_text_output() && output.is_tty() {
sess.emit_err(errors::BinaryOutputToTty { shorthand: output_type.shorthand() });
} else {
copy_gracefully(&path, &output);
}
if !sess.opts.cg.save_temps && !keep_numbered {
// The user just wants `foo.x`, not `foo.#module-name#.x`.
ensure_removed(sess.diagnostic(), &path);