diff --git a/tests/ui/debuginfo/auxiliary/line-tables-only-helper.rs b/tests/ui/debuginfo/auxiliary/line-tables-only-helper.rs new file mode 100644 index 00000000000..65da2c3f5c7 --- /dev/null +++ b/tests/ui/debuginfo/auxiliary/line-tables-only-helper.rs @@ -0,0 +1,22 @@ +//@ compile-flags: -Cstrip=none -Cdebuginfo=line-tables-only + +#[no_mangle] +pub fn baz(mut cb: F, data: u32) where F: FnMut(u32) { + cb(data); +} + +#[no_mangle] +pub fn bar(cb: F, data: u32) where F: FnMut(u32) { + baz(cb, data); +} + +#[no_mangle] +pub fn foo(cb: F, data: u32) where F: FnMut(u32) { + bar(cb, data); +} + +pub fn capture_backtrace() -> std::backtrace::Backtrace { + let mut bt = None; + foo(|_| bt = Some(std::backtrace::Backtrace::capture()), 42); + bt.unwrap() +} diff --git a/tests/ui/debuginfo/backtrace-line-tables-only.rs b/tests/ui/debuginfo/backtrace-line-tables-only.rs new file mode 100644 index 00000000000..044f59e483a --- /dev/null +++ b/tests/ui/debuginfo/backtrace-line-tables-only.rs @@ -0,0 +1,49 @@ +// Test that when debug info only includes line tables that backtrace is still generated +// successfully. +// Original test: +// . +// Part of porting some backtrace tests to rustc. +// This test diverges from the original test in that it now uses a Rust library auxiliary because +// rustc now has `-Cdebuginfo=line-tables-only`. +// ignore-tidy-linelength +//@ run-pass +//@ compile-flags: -Cstrip=none -Cdebuginfo=line-tables-only +//@ ignore-android FIXME #17520 +//@ ignore-fuchsia Backtraces not symbolized +//@ needs-unwind +//@ aux-build: line-tables-only-helper.rs + +#![feature(backtrace_frames)] + +extern crate line_tables_only_helper; + +use std::backtrace::Backtrace; + +fn assert_contains( + backtrace: &Backtrace, + expected_name: &str, + expected_file: &str, + expected_line: u32, +) { + // FIXME(jieyouxu): fix this ugly fragile test when `BacktraceFrame` has accessors like... + // `symbols()`. + let backtrace = format!("{:#?}", backtrace); + eprintln!("{}", backtrace); + assert!(backtrace.contains(expected_name), "backtrace does not contain expected name {}", expected_name); + assert!(backtrace.contains(expected_file), "backtrace does not contain expected file {}", expected_file); + assert!(backtrace.contains(&expected_line.to_string()), "backtrace does not contain expected line {}", expected_line); +} + +fn main() { + std::env::set_var("RUST_BACKTRACE", "1"); + let backtrace = line_tables_only_helper::capture_backtrace(); + + // FIXME(jieyouxu): for some forsaken reason on i686-msvc `foo` doesn't have an entry in the + // line tables? + #[cfg(not(all(target_pointer_width = "32", target_env = "msvc")))] + { + assert_contains(&backtrace, "foo", "line-tables-only-helper.rs", 5); + } + assert_contains(&backtrace, "bar", "line-tables-only-helper.rs", 10); + assert_contains(&backtrace, "baz", "line-tables-only-helper.rs", 15); +}