Breakpoint 1, strcspn_ () at ../../src/string/strcspn.S:16
16		cmpb	$0, (%rsi)
(gdb) x/c $rsi
0x4010b4:	0 '\000'
(gdb) c
Continuing.

Breakpoint 1, strcspn_ () at ../../src/string/strcspn.S:16
16		cmpb	$0, (%rsi)
(gdb) x/c $rsi
0x401076:	0 '\000'
(gdb) c
Continuing.

Breakpoint 1, strcspn_ () at ../../src/string/strcspn.S:16
16		cmpb	$0, (%rsi)
(gdb) x/c $rsi
0x40107a:	109 'm'