GNU gdb (GDB) 7.12.1
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Reading symbols from ecfw...done.
(gdb) target extended-remote /dev/ttyACM0
Remote debugging using /dev/ttyACM0
(gdb) monitor swdp_scan
Target voltage: 3.3V
Available Targets:
No. Att Driver
 1      Atmel SAM4S
(gdb) attach 1
Attaching to program: /home/cmp/git/c4puter/ecfw/ecfw, Remote target
0x00401590 in prvIdleTask (pvParameters=<optimized out>) at FreeRTOS/Source/tasks.c:3166
3166				if( listCURRENT_LIST_LENGTH( &( pxReadyTasksLists[ tskIDLE_PRIORITY ] ) ) > ( UBaseType_t ) 1 )
(gdb) b commands.rs:454
Breakpoint 1 at 0x41835e: file /home/cmp/git/c4puter/ecfw/ecfw_rust/main/commands.rs, line 454.
(gdb) c
Continuing.
Note: automatically using hardware breakpoints for read-only addresses.

Breakpoint 1, ecfw_rust::main::commands::cmd_ls (args=...) at /home/cmp/git/c4puter/ecfw/ecfw_rust/main/commands.rs:456
456	    let path = if args.len() == 2 { args[1] } else { "/" };
(gdb) n
459	    let mut sb = StringBuilder::new();
(gdb)
460	    try!(sb.append(path));
(gdb) p sb
$1 = <optimized out>
(gdb) p path
$2 = &str {data_ptr: 0x200017af <instances+3> "/\000", length: 1}
(gdb) n
461	    let pab = path.as_bytes();
(gdb)
462	    if pab[pab.len() - 1] != '/' as u8 {
(gdb) p pab
$3 = &[u8] {data_ptr: 0x200017af <instances+3> "/\000", length: 1}
(gdb) n
465	    let only_path = sb.len();
(gdb)
467	    let mut dir = try!(drivers::ext4::dir_open(path));
(gdb) p only_path
$4 = 1
(gdb) q
A debugging session is active.

	Inferior 1 [Remote target] will be detached.

Quit anyway? (y or n) y
Detaching from program: /home/cmp/git/c4puter/ecfw/ecfw, Remote target