Auto merge of rust-lang#2929 - RalfJung:tls-panic, r=RalfJung

add tests for panicky drop in thread_local destructor

Adds a test for rust-lang#112285

src/tools/miri/tests/fail/panic/thread_local_const_drop_panic.rs

@@ -0,0 +1,22 @@
+//@error-in-other-file: aborted execution
+// Backtraces vary wildly between platforms, we have to normalize away almost the entire thing.
+// Full backtraces avoid annoying empty line differences.
+//@compile-flags: -Zmiri-backtrace=full
+//@normalize-stderr-test: "'main'|'<unnamed>'" -> "$$NAME"
+//@normalize-stderr-test: ".*(note|-->|\|).*\n" -> ""
+
+pub struct NoisyDrop {}
+
+impl Drop for NoisyDrop {
+    fn drop(&mut self) {
+        panic!("ow");
+    }
+}
+
+thread_local! {
+    pub static NOISY: NoisyDrop = const { NoisyDrop {} };
+}
+
+fn main() {
+    NOISY.with(|_| ());
+}

src/tools/miri/tests/fail/panic/thread_local_const_drop_panic.stderr

@@ -0,0 +1,6 @@
+thread $NAME panicked at 'ow', $DIR/thread_local_const_drop_panic.rs:LL:CC
+fatal runtime error: thread local panicked on drop
+error: abnormal termination: the program aborted execution
+
+error: aborting due to previous error
+

src/tools/miri/tests/fail/panic/thread_local_drop_panic.rs

@@ -0,0 +1,20 @@
+//@error-in-other-file: aborted execution
+// Backtraces vary wildly between platforms, we have to normalize away almost the entire thing
+//@normalize-stderr-test: "'main'|'<unnamed>'" -> "$$NAME"
+//@normalize-stderr-test: ".*(note|-->|\|).*\n" -> ""
+
+pub struct NoisyDrop {}
+
+impl Drop for NoisyDrop {
+    fn drop(&mut self) {
+        panic!("ow");
+    }
+}
+
+thread_local! {
+    pub static NOISY: NoisyDrop = NoisyDrop {};
+}
+
+fn main() {
+    NOISY.with(|_| ());
+}

src/tools/miri/tests/fail/panic/thread_local_drop_panic.stderr

@@ -0,0 +1,6 @@
+thread $NAME panicked at 'ow', $DIR/thread_local_drop_panic.rs:LL:CC
+fatal runtime error: thread local panicked on drop
+error: abnormal termination: the program aborted execution
+
+error: aborting due to previous error
+