# Pastebin VKcx2xes
diff -r 503f4f78d861 rpython/jit/backend/x86/guard_compat.py
--- a/rpython/jit/backend/x86/guard_compat.py   Wed Jan 17 14:50:50 2018 +0100
+++ b/rpython/jit/backend/x86/guard_compat.py   Wed Jan 17 15:57:04 2018 +0100
@@ -183,6 +183,7 @@
     # contains one extra word on the stack:
     #    - saved RAX
 
+    assembler.pending_slowpaths = []
     mc = codebuf.MachineCodeBlockWrapper()
     mc.force_frame_size(frame_size)
     if IS_X86_32:    # save edi as an extra scratch register
@@ -286,6 +287,7 @@
         XXX
         mc.JMP_s(0)
 
+    assembler.flush_pending_slowpaths(mc)
     assembler.guard_compat_search_tree = mc.materialize(assembler.cpu, [])