* i386-linux-tdep.c (linux_sigtramp_code, linux_rt_sigtramp_code):

* i386-linux-tdep.c (linux_sigtramp_code, linux_rt_sigtramp_code):
Change type to `static const gdb_byte'.
(i386_linux_sigtramp_start, i386_linux_rt_sigtramp_start)
(i386_linux_sigcontext_addr): Use gdb_byte for buf.
* amd64-linux-tdep.c (linux_sigtramp_code): Change type to `static
const gdb_byte'.
(amd64_linux_sigtramp_start, amd64_linux_sigcontext_addr): Use
gdb_byte for buf.
* amd64fbsd-tdep.c (amd64fbsd_supply_uthread)
(amd64fbsd_collect_uthread): Use gdb_byte for buf.