Question

Given a double d, I can print it,

(lldb) expr d
(double) $2 = 3.05658e-08

Is there a way to print more digits of d, such as

printf("%.15f", d) ?

Version of LLDB in question is LLDB-112.2, supplied with OS X 10.7.4

EDIT: Using

(lldb) expr (int) printf("%.15f", d)

results in the process being killed, with a

LLVM ERROR: Internal relocations not supported.

error message.

Answer 1

lldb-112.2 is a little old at this point (I think it is about six or seven months old); checking it against the Xcode 4.5 lldb (lldb-167 or so), it looks like it works correctly now.

0.000000030565830
Process 77907 stopped
* thread #1: tid = 0x1c03, 0x0000000100000f34 a.out`main + 52 at a.c:6, stop reason = breakpoint 1.1
    #0: 0x0000000100000f34 a.out`main + 52 at a.c:6
   3    {
   4      double d = .00000003056583;
   5      printf ("%.15f\n", d);
-> 6      return 5;
   7    }
(lldb) p d
(double) $0 = 3.05658e-08
(lldb) expr (int)printf("%.15f\n", d)
(int) $1 = 18
0.000000030565830