Em Sat, Jul 21, 2012 at 08:22:33PM +0200, Nicolas escreveu:
> Hello,
>
> I tried using pahole, but I get a brain fart alert with the file
> attached (which is an extract from stdio.h). I'm running dwarves 1.10,
> libdw1 0.152 and g++ 4.6.1, on i386.
>
> Here is what I get:
>
> $ g++ -Wall -g -c brainfart.cpp -o brainfart.o && pahole brainfart.o
> class ios_base {
> enum _Ios_Openmodeconst in; /* 0 4 */
> typedef enum _Ios_Fmtflags fmtflags;
>
>
> /* size: 1, cachelines: 1, members: 1 */
> /* padding: 65533 */
> /* last cacheline: 1 bytes */
>
> /* BRAIN FART ALERT! 1 != 4 + 0(holes), diff = -3 */
>
> };
>
> Moreover, on amd64, pahole segfaults if I do the same (with dwarves
> 1.10, libdw1 0.152, g++ 4.6.3).
that is strange, I just tried it on rhel6, x86_64, and just reproduced
what you describe on i386:
[acme@sandy pahole]$ uname -a
Linux sandy.ghostprotocols.net 3.6.0-rc1+ #13 SMP Fri Aug 10 12:42:33 BRT 2012 x86_64 x86_64 x86_64 GNU/Linux
[acme@sandy pahole]$ g++ -Wall -g -c brainfart.cpp -o brainfart.o && pahole brainfart.o
class ios_base {
enum _Ios_Openmodeconst in; /* 0 4 */
typedef enum _Ios_Fmtflags fmtflags;
/* size: 1, cachelines: 1, members: 1 */
/* padding: 65533 */
/* last cacheline: 1 bytes */
/* BRAIN FART ALERT! 1 != 4 + 0(holes), diff = -3 */
};
[acme@sandy pahole]$ file brainfart.o
brainfart.o: ELF 64-bit LSB relocatable, x86-64, version 1 (SYSV), not stripped
[acme@sandy pahole]$
will try to fix this on the plane later today,
thanks for reporting and sorry for the late response,
- Arnaldo
--
To unsubscribe from this list: send the line "unsubscribe dwarves" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
