mirror of https://github.com/rust-lang/rust
71 lines
2.5 KiB
Rust
71 lines
2.5 KiB
Rust
//@ ignore-windows
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//@ ignore-apple
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// LLVM 17's embed-source implementation requires that source code is attached
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// for all files in the output DWARF debug info. This restriction was lifted in
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// LLVM 18 (87e22bdd2bd6d77d782f9d64b3e3ae5bdcd5080d).
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//@ min-llvm-version: 18
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// This test should be replaced with one in tests/debuginfo once we can easily
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// tell via GDB or LLDB if debuginfo contains source code. Cheap tricks in LLDB
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// like setting an invalid source map path don't appear to work, maybe this'll
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// become easier once GDB supports DWARFv6?
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use std::collections::HashMap;
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use std::path::PathBuf;
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use std::rc::Rc;
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use gimli::{AttributeValue, EndianRcSlice, Reader, RunTimeEndian};
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use object::{Object, ObjectSection};
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use run_make_support::{gimli, object, rfs, rustc};
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fn main() {
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let output = PathBuf::from("embed-source-main");
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rustc()
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.input("main.rs")
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.output(&output)
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.arg("-g")
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.arg("-Zembed-source=yes")
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.arg("-Zdwarf-version=5")
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.run();
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let output = rfs::read(output);
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let obj = object::File::parse(output.as_slice()).unwrap();
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let endian = if obj.is_little_endian() { RunTimeEndian::Little } else { RunTimeEndian::Big };
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let dwarf = gimli::Dwarf::load(|section| -> Result<_, ()> {
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let data = obj.section_by_name(section.name()).map(|s| s.uncompressed_data().unwrap());
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Ok(EndianRcSlice::new(Rc::from(data.unwrap_or_default().as_ref()), endian))
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})
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.unwrap();
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let mut sources = HashMap::new();
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let mut iter = dwarf.units();
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while let Some(header) = iter.next().unwrap() {
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let unit = dwarf.unit(header).unwrap();
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let unit = unit.unit_ref(&dwarf);
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if let Some(program) = &unit.line_program {
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let header = program.header();
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for file in header.file_names() {
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if let Some(source) = file.source() {
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let path = unit
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.attr_string(file.path_name())
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.unwrap()
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.to_string_lossy()
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.unwrap()
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.to_string();
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let source =
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unit.attr_string(source).unwrap().to_string_lossy().unwrap().to_string();
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if !source.is_empty() {
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sources.insert(path, source);
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}
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}
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}
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}
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}
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dbg!(&sources);
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assert_eq!(sources.len(), 1);
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assert_eq!(sources.get("main.rs").unwrap(), "// hello\nfn main() {}\n");
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}
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