1 files changed, 15 insertions, 0 deletions
diff --git a/tests/ui/const_prop/apfloat-remainder-regression.rs b/tests/ui/const_prop/apfloat-remainder-regression.rs
new file mode 100644
index 000000000..08932c333
--- /dev/null
+++ b/tests/ui/const_prop/apfloat-remainder-regression.rs
@@ -0,0 +1,15 @@
+// run-pass
+// compile-flags: -O -Zmir-opt-level=3 -Cno-prepopulate-passes
+
+// Regression test for a broken MIR optimization (issue #102403).
+pub fn f() -> f64 {
+    std::hint::black_box(-1.0) % std::hint::black_box(-1.0)
+}
+
+pub fn g() -> f64 {
+    -1.0 % -1.0
+}
+
+pub fn main() {
+    assert_eq!(f().signum(), g().signum());
+}