break of close loop

[Efim Monjak <ymonyak@lipowsky.de>]

Hi all,

if it is need to stop in the small loop i.e.:
for(;;)
  ;
which is compiled as one opcode:
lable:
  jmp lable:

GDB works fine by "continue" and "stepi" commands: it sends ctrl+c
receive the break address and doing no more, but by "step" command
it try to do a one step after break address is received. The break address
is the "lable" address and this step starts the loop another time.

Hier is the part of protocol
(gdb) c
Continuing.

Program received signal SIGTRAP, Trace/breakpoint trap.
main () at ../src/main.c:95
95                      ;
(gdb) c
Continuing.

Program received signal SIGTRAP, Trace/breakpoint trap.
main () at ../src/main.c:95
95                      ;
(gdb) set debug remote 1
(gdb) stepi
Sending packet: $s#73...Ack
remote_interrupt called
remote_stop called
Packet received: T050B:EC3D0040;0D:E03D0040;0F:D8070040;
Sending packet: $m400007d8,4#94...Ack
Packet received: FEFFFFEA
Sending packet: $m40003de8,4#c5...Ack
Packet received: FEFFFFEA
Sending packet: $meafffffe,4#f6...Ack
Packet received: E01
Sending packet: $m40003de4,4#c1...Ack
Packet received: F03D0040
95                      ;
(gdb) stepi
Sending packet: $s#73...Ack
remote_interrupt called
remote_stop called
Packet received: T050B:EC3D0040;0D:E03D0040;0F:D8070040;
Sending packet: $m400007d8,4#94...Ack
Packet received: FEFFFFEA
Sending packet: $m40003de8,4#c5...Ack
Packet received: FEFFFFEA
Sending packet: $meafffffe,4#f6...Ack
Packet received: E01
Sending packet: $m40003de4,4#c1...Ack
Packet received: F03D0040
95                      ;
(gdb) step
Sending packet: $s#73...Ack
remote_interrupt called
remote_stop called
Packet received: T050B:EC3D0040;0D:E03D0040;0F:D8070040;

[hier loop is stopped]

Sending packet: $s#73...Ack

[hier loop is started by last step]

thanks