bail on compilation if the comptime receiver is frozen

1 files changed, 6 insertions, 0 deletions

diff --git a/yjit/src/codegen.rs b/yjit/src/codegen.rs
index 6b2ef6806f..c60264078b 100644
--- a/yjit/src/codegen.rs
+++ b/yjit/src/codegen.rs
@@ -2191,6 +2191,12 @@ fn gen_setinstancevariable(
     let comptime_receiver = jit_peek_at_self(jit);
     let comptime_val_klass = comptime_receiver.class_of();
 
+    // If the comptime receiver is frozen, writing an IV will raise an exception
+    // and we don't want to JIT code to deal with that situation.
+    if comptime_receiver.is_frozen() {
+        return CantCompile;
+    }
+
     // Check if the comptime class uses a custom allocator
     let custom_allocator = unsafe { rb_get_alloc_func(comptime_val_klass) };
     let uses_custom_allocator = match custom_allocator {