Re: [Lightning] Re: failure with GNU lightning on Mac OS X 10.6.2

[Todd Rovito]

On Tue, Feb 23, 2010 at 1:10 AM, Paolo Bonzini <address@hidden> wrote:
>
>> Program received signal EXC_BAD_ACCESS, Could not access memory.
>> Reason: KERN_INVALID_ADDRESS at address: 0xffffffffffffffff
>> 0x0000000100000bde in main () at incr.c:19
>> 19             jit_leaf(1);                     /*      leaf  1
>>   */
>> (gdb)
>
> Can you type
>
> disass *codeBuffer *(codeBuffer+100)
>
> in gdb?

Sure here are the results:
(gdb) run
Starting program: /Users/rovitotv/prog/lightning/test/incr
Reading symbols for shared libraries +. done

Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_INVALID_ADDRESS at address: 0xffffffffffffffff
0x0000000100000bde in main () at incr.c:19
19             jit_leaf(1);                     /*      leaf  1             */
(gdb) disass *codeBuffer *(codeBuffer+100)
Cannot access memory at address 0xffffffffffffffff

Strange I guess it is not allocating the RAM correctly with the mmap
command.  I did another gdb session with a break at the start and I
get similar results here:
(gdb) break main
Breakpoint 1 at 0x100000b6e: file incr.c, line 11.
(gdb) run
Starting program: /Users/rovitotv/prog/lightning/test/incr
Reading symbols for shared libraries +. done

Breakpoint 1, main () at incr.c:11
11             codeBuffer = mmap (NULL, 1024, PROT_EXEC | PROT_READ | 
PROT_WRITE,
(gdb) n
14             pifi  incr = (pifi) (jit_set_ip(codeBuffer).iptr);
(gdb) disass *codeBuffer
Cannot access memory at address 0xffffffffffffffff
(gdb) disass *codeBuffer *(codeBuffer+100)
Cannot access memory at address 0xffffffffffffffff


Again thanks for the excellent support.