Arthur Marsh wrote, on 14/04/14 01:33: > gcc-4.9 4.9-20140411-2 > GNU assembler (GNU Binutils for Debian) 2.24.51.20140411 I repeated the process with gcc-4.8 and didn't hit the problem: gcc-4.8.real (Debian 4.8.2-19) 4.8.2 So this is probably a compiler bug. Arthur.