< 2.7 bug in not distinguishing raise from assert

test/simple_source/stmts/04_raise.py

@@ -0,0 +1,9 @@
+# 2.6.9 asynccore.py
+# Bug in 2.6 was confusing AssertError with an assert statement
+# There is special detect code to sort this out based on whether
+# we have POP_JUMP_IF_TRUE (2.7) / JUMP_IF_TRUE, POP_TOP
+
+def compact_traceback(tb):
+    if not tb: # Must have a traceback
+        raise AssertionError("traceback does not exist")
+    return