Index: Modules/cmathmodule.c
===================================================================
--- Modules/cmathmodule.c	(revision 64571)
+++ Modules/cmathmodule.c	(working copy)
@@ -838,9 +838,16 @@
 
 	errno = 0;
 	PyFPE_START_PROTECT("complex function", return 0)
+	printf("arg1 is complex(%.17g, %.17g)\n", x.real, x.imag);
 	x = c_log(x);
-	if (PyTuple_GET_SIZE(args) == 2)
-		x = c_quot(x, c_log(y));
+	printf("log(arg1) is complex(%.17g, %.17g)\n", x.real, x.imag);
+	if (PyTuple_GET_SIZE(args) == 2) {
+		printf("arg2 is complex(%.17g, %.17g)\n", y.real, y.imag);
+		y = c_log(y);
+		printf("log(arg2) is complex(%.17g, %.17g)\n", y.real, y.imag);
+		x = c_quot(x, y);
+		printf("quotient is complex(%.17g, %.17g)\n", x.real, x.imag);
+	}
 	PyFPE_END_PROTECT(x)
 	if (errno != 0)
 		return math_error();