On 15/10/15 09:59, Hadrien Grasland wrote: > I am pretty sure that they both feature 3 colons. Although my somewhat > ill-placed "No output" comment might hide the second one a bit in the > code I provided. Haha, yes, congratulations on a baffling test case. It's complaining that "st(0)" doesn't make any sense in this case. I see what you're trying to do, but I don't know how to make GCC do it. Andrew.