rust/tests/ui/sanitizer/new-llvm-pass-manager-thin-lto.rs
Martin Nordholts e1d4f2a0c2 tests: Require run-fail ui tests to have an exit code (SIGABRT not ok)
And introduce two new directives for ui tests:
* `run-crash`
* `run-fail-or-crash`

Normally a `run-fail` ui test like tests that panic shall not be
terminated by a signal like `SIGABRT`. So begin having that as a hard
requirement.

Some of our current tests do terminate by a signal/crash however.
Introduce and use `run-crash` for those tests. Note that Windows crashes
are not handled by signals but by certain high bits set on the process
exit code. Example exit code for crash on Windows: `0xc000001d`.
Because of this, we define "crash" on all platforms as "not exit with
success and not exit with a regular failure code in the range 1..=127".

Some tests behave differently on different targets:
* Targets without unwind support will abort (crash) instead of exit with
  failure code 101 after panicking. As a special case, allow crashes for
  `run-fail` tests for such targets.
* Different sanitizer implementations handle detected memory problems
  differently. Some abort (crash) the process while others exit with
  failure code 1. Introduce and use `run-fail-or-crash` for such tests.
2025-07-19 18:44:07 +02:00

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Rust

// Regression test for sanitizer function instrumentation passes not
// being run when compiling with new LLVM pass manager and ThinLTO.
// Note: The issue occurred only on non-zero opt-level.
//
//@ needs-sanitizer-support
//@ needs-sanitizer-address
//@ ignore-cross-compile
//
//@ no-prefer-dynamic
//@ revisions: opt0 opt1
//@ compile-flags: -Zsanitizer=address -Clto=thin
//@[opt0]compile-flags: -Copt-level=0
//@[opt1]compile-flags: -Copt-level=1
//@ run-fail-or-crash
//@ error-pattern: ERROR: AddressSanitizer: stack-use-after-scope
static mut P: *mut usize = std::ptr::null_mut();
fn main() {
unsafe {
{
let mut x = 0;
P = &mut x;
}
std::ptr::write_volatile(P, 123);
}
}