476ea45c68
It is possible to link libunwind and use the normal backtrace code, but it fails to symbolize stack traces. I investigated and could get the list of instruction pointers and symbol names, but I'm not sure how to use the dwarf info to map from instruction pointer to source location. In any case, fixing this is probably not a high priority. See https://github.com/rust-lang/rust/issues/131738
51 lines
2.1 KiB
Rust
51 lines
2.1 KiB
Rust
// Test that when debug info only includes line tables that backtrace is still generated
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// successfully.
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// Original test:
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// <https://github.com/rust-lang/backtrace-rs/tree/6fa4b85b9962c3e1be8c2e5cc605cd078134152b/crates/line-tables-only>.
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// Part of <https://github.com/rust-lang/rust/issues/122899> porting some backtrace tests to rustc.
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// This test diverges from the original test in that it now uses a Rust library auxiliary because
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// rustc now has `-Cdebuginfo=line-tables-only`.
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// ignore-tidy-linelength
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//@ run-pass
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//@ compile-flags: -Cstrip=none -Cdebuginfo=line-tables-only
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//@ ignore-android FIXME #17520
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//@ ignore-fuchsia Backtraces not symbolized
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//@ ignore-emscripten Requires custom symbolization code
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//@ needs-unwind
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//@ aux-build: line-tables-only-helper.rs
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#![feature(backtrace_frames)]
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extern crate line_tables_only_helper;
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use std::backtrace::Backtrace;
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fn assert_contains(
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backtrace: &Backtrace,
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expected_name: &str,
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expected_file: &str,
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expected_line: u32,
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) {
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// FIXME(jieyouxu): fix this ugly fragile test when `BacktraceFrame` has accessors like...
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// `symbols()`.
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let backtrace = format!("{:#?}", backtrace);
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eprintln!("{}", backtrace);
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assert!(backtrace.contains(expected_name), "backtrace does not contain expected name {}", expected_name);
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assert!(backtrace.contains(expected_file), "backtrace does not contain expected file {}", expected_file);
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assert!(backtrace.contains(&expected_line.to_string()), "backtrace does not contain expected line {}", expected_line);
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}
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fn main() {
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std::env::set_var("RUST_BACKTRACE", "1");
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let backtrace = line_tables_only_helper::capture_backtrace();
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// FIXME(jieyouxu): for some forsaken reason on i686-msvc `foo` doesn't have an entry in the
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// line tables?
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#[cfg(not(all(target_pointer_width = "32", target_env = "msvc")))]
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{
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assert_contains(&backtrace, "foo", "line-tables-only-helper.rs", 5);
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}
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assert_contains(&backtrace, "bar", "line-tables-only-helper.rs", 10);
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assert_contains(&backtrace, "baz", "line-tables-only-helper.rs", 15);
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}
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