ast-dump option in clang-cc not working?

Clang Frontend
1

Hi.
I am trying to understand clang and was trying to do clang-cc hello.c -ast-dump. clang and llvm was built from LLVM 2.6 release and am on Ubuntu 9.04 64-bit. Any ideas what may be the problem?
I get the follwing output indicating error:

typedef __int128_t __int128_t;
typedef __uint128_t __uint128_t;
struct __va_list_tag {
unsigned int gp_offset;
unsigned int fp_offset;
void *overflow_arg_area;
void *reg_save_area;
};
typedef struct __va_list_tag __va_list_tag;
typedef __va_list_tag __builtin_va_list[1];
0 clang-cc 0x0000000000efa8ff
1 clang-cc 0x0000000000efc611
2 libpthread.so.0 0x00007f58094a1080
3 clang-cc 0x000000000079a6e0
4 clang-cc 0x00000000007a8fc4
5 clang-cc 0x00000000007a50db
6 clang-cc 0x0000000000763f96
7 clang-cc 0x000000000076510c
8 clang-cc 0x0000000000763e98
9 clang-cc 0x0000000000764b6b
10 clang-cc 0x000000000043891d
11 clang-cc 0x00000000006402fb
12 clang-cc 0x0000000000427ff9
13 clang-cc 0x0000000000430f1a main + 4906
14 libc.so.6 0x00007f58087905a6 __libc_start_main + 230
15 clang-cc 0x0000000000425b09
Stack dump:
0. Program arguments: clang-cc -ast-dump hello.c

  1. parser at end of file
    Segmentation fault
    typedef __int128_t __int128_t;
    typedef __uint128_t __uint128_t;
    struct __va_list_tag {
    unsigned int gp_offset;
    unsigned int fp_offset;
    void *overflow_arg_area;
    void *reg_save_area;
    };
    typedef struct __va_list_tag __va_list_tag;
    typedef __va_list_tag __builtin_va_list[1];
    0 clang-cc 0x0000000000efa8ff
    1 clang-cc 0x0000000000efc611
    2 libpthread.so.0 0x00007f58094a1080
    3 clang-cc 0x000000000079a6e0
    4 clang-cc 0x00000000007a8fc4
    5 clang-cc 0x00000000007a50db
    6 clang-cc 0x0000000000763f96
    7 clang-cc 0x000000000076510c
    8 clang-cc 0x0000000000763e98
    9 clang-cc 0x0000000000764b6b
    10 clang-cc 0x000000000043891d
    11 clang-cc 0x00000000006402fb
    12 clang-cc 0x0000000000427ff9
    13 clang-cc 0x0000000000430f1a main + 4906
    14 libc.so.6 0x00007f58087905a6 __libc_start_main + 230
    15 clang-cc 0x0000000000425b09
    Stack dump:
  2. Program arguments: clang-cc -ast-dump hello.c
  3. parser at end of file
    Segmentation fault
2

We generally have not kept up-to-date with -ast-dump.
But a simple hello.c seems to work for me:

% cat hello.c
#include <stdio.h>

int main() {
  printf("HELLO");
}

$clang -cc1 -ast-dump hello.c

typedef __int128_t __int128_t;
typedef __uint128_t __uint128_t;
struct __va_list_tag {
     unsigned int gp_offset;
     unsigned int fp_offset;
     void *overflow_arg_area;
     void *reg_save_area;
};
typedef struct __va_list_tag __va_list_tag;
typedef __va_list_tag __builtin_va_list[1];
typedef signed char __int8_t;
typedef unsigned char __uint8_t;
typedef short __int16_t;
typedef unsigned short __uint16_t;
typedef int __int32_t;
typedef unsigned int __uint32_t;
typedef long long __int64_t;
typedef unsigned long long __uint64_t;
typedef long __darwin_intptr_t;
typedef unsigned int __darwin_natural_t;
typedef int __darwin_ct_rune_t;

...

- Fariborz