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From: Nicolas <nikos42-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: dwarves-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Brain fart alert
Date: Sat, 21 Jul 2012 20:22:33 +0200	[thread overview]
Message-ID: <CACHCVZ6oDyFwGbC4EwF_wsR9tCkoych5N6buLhRRLcyaL6iifw@mail.gmail.com> (raw)

[-- Attachment #1: Type: text/plain, Size: 687 bytes --]

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).

Any ideas?

Thanks a lot,
Nicolas

[-- Attachment #2: brainfart.cpp --]
[-- Type: text/x-c++src, Size: 289 bytes --]

namespace std
{
  enum _Ios_Fmtflags
    {
      a = 1,
    };
  enum _Ios_Openmode
    {
      _S_in = 1L << 3,
    };
  class ios_base
  {
  public:
    typedef _Ios_Fmtflags fmtflags;
    static const _Ios_Openmode in = _S_in;
  };
  void setiosflags(ios_base::fmtflags __mask)  {  }
}

             reply	other threads:[~2012-07-21 18:22 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-07-21 18:22 Nicolas [this message]
     [not found] ` <CACHCVZ6oDyFwGbC4EwF_wsR9tCkoych5N6buLhRRLcyaL6iifw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-08-15 17:56   ` Brain fart alert Arnaldo Carvalho de Melo
     [not found]     ` <20120815175647.GK2370-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
2012-08-16 19:52       ` Arnaldo Carvalho de Melo
     [not found]         ` <20120816195224.GC10277-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
2012-08-19 22:16           ` Mark Wielaard
2012-08-20 13:45         ` Dodji Seketeli
     [not found]           ` <m3obm5fzhs.fsf-fIDRvF7C5exg9hUCZPvPmw@public.gmane.org>
2012-08-20 17:35             ` Arnaldo Carvalho de Melo
2012-08-20 18:02   ` Arnaldo Carvalho de Melo
     [not found]     ` <20120820180216.GE3046-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
2012-08-20 18:28       ` Arnaldo Carvalho de Melo
2012-08-30 16:35       ` Nicolas
     [not found]         ` <CACHCVZ5EJadxOTJ0T4phSfAcm1FK7wfeDTp9QcSa1V1JCpa8SA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-09-03 12:22           ` Mark Wielaard
     [not found]             ` <1346674948.3090.40.camel-OO0OHOuVXW89n/EXqpbZ8ns8WZQLr0HW@public.gmane.org>
2012-09-24 22:19               ` Nicolas
     [not found]                 ` <5060DC56.4080609-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2013-02-26  1:50                   ` Nicolas
     [not found]                     ` <CACHCVZ6uvDW1CpyxXio3P17EL6bE=FKGDNm11RNZTceR-dWLjg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-02-26 10:56                       ` Mark Wielaard
     [not found]                         ` <1361876163.4930.4.camel-Et2QWsRS+g7yukXOleVwRPp4M6BF03vq@public.gmane.org>
2013-03-20 13:37                           ` Arnaldo Carvalho de Melo
2015-11-11 18:26 David Sterba
     [not found] ` <20151111182618.GF6445-AlSwsSmVLrQ@public.gmane.org>
2015-11-11 20:11   ` Arnaldo Carvalho de Melo
     [not found]     ` <20151111201151.GA6712-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2015-11-11 21:05       ` David Sterba
     [not found]         ` <20151111210519.GG6445-AlSwsSmVLrQ@public.gmane.org>
2015-11-11 22:13           ` Arnaldo Carvalho de Melo
     [not found]             ` <20151111221340.GB12579-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2015-11-11 22:17               ` Arnaldo Carvalho de Melo
     [not found]                 ` <20151111221747.GC12579-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2015-11-11 22:48                   ` Arnaldo Carvalho de Melo

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