Environment: OS: Debian Wheezy on qemu-system-sparc64 Kernel: 3.2.0-4-sparc64 gcc: 4.7 strace commit hash: 6d3162acf, configured without --enable-gcc-Werror. Because this error happens on ./linux/sparc64/* , I suspect it is specific to sparc. Any hint on minimum gcc version? Thanks Yunchih