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bjorn3
4627bff6e6
And if an allocation while printing the backtrace fails, don't try to print another backtrace as that will never succeed.
50 lines
2.1 KiB
Rust
50 lines
2.1 KiB
Rust
//@ run-pass
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// We disable tail merging here because it can't preserve debuginfo and thus
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// potentially breaks the backtraces. Also, subtle changes can decide whether
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// tail merging succeeds, so the test might work today but fail tomorrow due to a
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// seemingly completely unrelated change.
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// Unfortunately, LLVM has no "disable" option for this, so we have to set
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// "enable" to 0 instead.
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//@ compile-flags:-g -Copt-level=0 -Cllvm-args=-enable-tail-merge=0
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//@ compile-flags:-Cforce-frame-pointers=yes
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//@ compile-flags:-Cstrip=none
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//@ ignore-android FIXME #17520
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//@ needs-subprocess
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//@ ignore-fuchsia Backtrace not symbolized, trace different line alignment
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//@ ignore-ios needs the `.dSYM` files to be moved to the device
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//@ ignore-tvos needs the `.dSYM` files to be moved to the device
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//@ ignore-watchos needs the `.dSYM` files to be moved to the device
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//@ ignore-visionos needs the `.dSYM` files to be moved to the device
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// FIXME(#117097): backtrace (possibly unwinding mechanism) seems to be different on at least
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// `i686-mingw` (32-bit windows-gnu)? cc #128911.
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//@ ignore-windows-gnu
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//@ ignore-backends: gcc
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//@ ignore-msvc see #62897 and `backtrace-debuginfo.rs` test
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use std::alloc::{Layout, handle_alloc_error};
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use std::process::Command;
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use std::{env, str};
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fn main() {
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if env::args().len() > 1 {
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handle_alloc_error(Layout::new::<[u8; 42]>())
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}
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let me = env::current_exe().unwrap();
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let output = Command::new(&me).env("RUST_BACKTRACE", "1").arg("next").output().unwrap();
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assert!(!output.status.success(), "{:?} is a success", output.status);
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let mut stderr = str::from_utf8(&output.stderr).unwrap();
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// When running inside QEMU user-mode emulation, there will be an extra message printed by QEMU
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// in the stderr whenever a core dump happens. Remove it before the check.
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stderr = stderr
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.strip_suffix("qemu: uncaught target signal 6 (Aborted) - core dumped\n")
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.unwrap_or(stderr);
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assert!(stderr.contains("memory allocation of 42 bytes failed"), "{}", stderr);
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assert!(stderr.contains("alloc_error_backtrace::main"), "{}", stderr);
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}
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