2 files changed, 59 insertions, 0 deletions
diff --git a/tests/run-make/debug-assertions/Makefile b/tests/run-make/debug-assertions/Makefile
new file mode 100644
index 000000000..e83337c59
--- /dev/null
+++ b/tests/run-make/debug-assertions/Makefile
@@ -0,0 +1,26 @@
+# ignore-cross-compile
+include ../tools.mk
+
+all:
+	$(RUSTC) debug.rs -C debug-assertions=no
+	$(call RUN,debug) good
+	$(RUSTC) debug.rs -C opt-level=0
+	$(call RUN,debug) bad
+	$(RUSTC) debug.rs -C opt-level=1
+	$(call RUN,debug) good
+	$(RUSTC) debug.rs -C opt-level=2
+	$(call RUN,debug) good
+	$(RUSTC) debug.rs -C opt-level=3
+	$(call RUN,debug) good
+	$(RUSTC) debug.rs -C opt-level=s
+	$(call RUN,debug) good
+	$(RUSTC) debug.rs -C opt-level=z
+	$(call RUN,debug) good
+	$(RUSTC) debug.rs -O
+	$(call RUN,debug) good
+	$(RUSTC) debug.rs
+	$(call RUN,debug) bad
+	$(RUSTC) debug.rs -C debug-assertions=yes -O
+	$(call RUN,debug) bad
+	$(RUSTC) debug.rs -C debug-assertions=yes -C opt-level=1
+	$(call RUN,debug) bad
diff --git a/tests/run-make/debug-assertions/debug.rs b/tests/run-make/debug-assertions/debug.rs
new file mode 100644
index 000000000..76ca60a71
--- /dev/null
+++ b/tests/run-make/debug-assertions/debug.rs
@@ -0,0 +1,33 @@
+#![feature(rustc_attrs)]
+#![deny(warnings)]
+
+use std::env;
+use std::thread;
+
+fn main() {
+    let should_fail = env::args().nth(1) == Some("bad".to_string());
+
+    assert_eq!(thread::spawn(debug_assert_eq).join().is_err(), should_fail);
+    assert_eq!(thread::spawn(debug_assert).join().is_err(), should_fail);
+    assert_eq!(thread::spawn(overflow).join().is_err(), should_fail);
+}
+
+fn debug_assert_eq() {
+    let mut hit1 = false;
+    let mut hit2 = false;
+    debug_assert_eq!({ hit1 = true; 1 }, { hit2 = true; 2 });
+    assert!(!hit1);
+    assert!(!hit2);
+}
+
+fn debug_assert() {
+    let mut hit = false;
+    debug_assert!({ hit = true; false });
+    assert!(!hit);
+}
+
+fn overflow() {
+    fn add(a: u8, b: u8) -> u8 { a + b }
+
+    add(200u8, 200u8);
+}