Seen in a recent CVS checkout, and today's. Just "set debug target 1" and
run a threaded application:
#11524 0x0810c8f8 in read_register_gen (regnum=8,
buf=0xbfffe70c "\020Ï,\bÓ¤#\bÔ\f%\bP^\n\blð\021\bÿÿÿÿ") at ../../src/gdb/regcache.c:760
#11525 0x080d585d in debug_print_register (func=0x823a4f1 "target_fetch_registers", regno=8)
at ../../src/gdb/target.c:1736
#11526 0x080d5982 in debug_to_fetch_registers (regno=8) at ../../src/gdb/target.c:1756
#11527 0x0810c434 in regcache_raw_read (regcache=0x82cfd08, regnum=8, buf=0xbfffe7ec)
at ../../src/gdb/regcache.c:694
#11528 0x0810c991 in regcache_cooked_read (regcache=0x82cfd08, regnum=8, buf=0xbfffe7ec)
at ../../src/gdb/regcache.c:769
#11529 0x0810c8f8 in read_register_gen (regnum=8,
buf=0xbfffe7ec "\020Ï,\bÓ¤#\bÔ\f%\bP^\n\blð\021\bÿÿÿÿ") at ../../src/gdb/regcache.c:760
#11530 0x080d585d in debug_print_register (func=0x823a4f1 "target_fetch_registers", regno=8)
at ../../src/gdb/target.c:1736
#11531 0x080d5982 in debug_to_fetch_registers (regno=8) at ../../src/gdb/target.c:1756
#11532 0x0810c434 in regcache_raw_read (regcache=0x82cfd08, regnum=8, buf=0xbfffe8cc)
at ../../src/gdb/regcache.c:694
#11533 0x0810c991 in regcache_cooked_read (regcache=0x82cfd08, regnum=8, buf=0xbfffe8cc)
at ../../src/gdb/regcache.c:769
#11534 0x0810c8f8 in read_register_gen (regnum=8, buf=0xbfffe8cc "\020Ï,\b\b")
at ../../src/gdb/regcache.c:760
#11535 0x0810d908 in read_register (regnum=8) at ../../src/gdb/regcache.c:1150
#11536 0x0810d988 in read_register_pid (regnum=8, ptid={pid = 21520, lwp = 21520, tid = 0})
at ../../src/gdb/regcache.c:1162
#11537 0x0810ddcd in generic_target_read_pc (ptid={pid = 21520, lwp = 21520, tid = 0})
at ../../src/gdb/regcache.c:1320