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From: David Edelsohn <dje.gcc@gmail.com>
To: Ian Lance Taylor <iant@google.com>
Cc: gcc-patches@gcc.gnu.org, gcc@gcc.gnu.org
Subject: Re: PATCH RFA: Build stages 2 and 3 with C++
Date: Wed, 20 Jul 2011 20:05:00 -0000	[thread overview]
Message-ID: <CAGWvny=99j6jpnzrL6WzqPtt=1f_50Rn873Wtiu6DTNVszDFhQ@mail.gmail.com> (raw)
In-Reply-To: <mcrsjq13q5u.fsf@coign.corp.google.com>

I now can get through the build of the compiler, but stage2 and stage3
libstdc++ and libsupc++ files have many comparison failures due to
tree.c:get_file_function_name() introducing explicit randomness to
produce different symbols for anonymous namespaces:

      /* Otherwise, the name must be unique across the entire link.
         We don't have anything that we know to be unique to this translation
         unit, so use what we do have and throw in some randomness.  */
      unsigned len;
      const char *name = weak_global_object_name;
      const char *file = main_input_filename;

      if (! name)
        name = "";
      if (! file)
        file = input_filename;

      len = strlen (file);
      q = (char *) alloca (9 * 2 + len + 1);
      memcpy (q, file, len + 1);

      sprintf (q + len, "_%08X_%08X", crc32_string (0, name),
               crc32_string (0, get_random_seed (false)));

producing differences like:

-       .lglobl
H.92.._ZN10__cxxabiv176_GLOBAL__N__farm_dje_src_src_libstdc___v3_libsupc___vec.cc_00000000_8F8DBED417uncatch_exceptionC2Ev
-       .lglobl
H.100.._ZN10__cxxabiv176_GLOBAL__N__farm_dje_src_src_libstdc___v3_libsupc___vec.cc_00000000_8F8DBED417uncatch_exceptionC1Ev
-       .lglobl
H.114.._ZN10__cxxabiv176_GLOBAL__N__farm_dje_src_src_libstdc___v3_libsupc___vec.cc_00000000_8F8DBED417uncatch_exceptionD2Ev
-       .lglobl
H.121.._ZN10__cxxabiv176_GLOBAL__N__farm_dje_src_src_libstdc___v3_libsupc___vec.cc_00000000_8F8DBED417uncatch_exceptionD1Ev
+       .lglobl
H.92.._ZN10__cxxabiv176_GLOBAL__N__farm_dje_src_src_libstdc___v3_libsupc___vec.cc_00000000_2322ABD117uncatch_exceptionC2Ev
+       .lglobl
H.100.._ZN10__cxxabiv176_GLOBAL__N__farm_dje_src_src_libstdc___v3_libsupc___vec.cc_00000000_2322ABD117uncatch_exceptionC1Ev
+       .lglobl
H.114.._ZN10__cxxabiv176_GLOBAL__N__farm_dje_src_src_libstdc___v3_libsupc___vec.cc_00000000_2322ABD117uncatch_exceptionD2Ev
+       .lglobl
H.121.._ZN10__cxxabiv176_GLOBAL__N__farm_dje_src_src_libstdc___v3_libsupc___vec.cc_00000000_2322ABD117uncatch_exceptionD1Ev


- David

  reply	other threads:[~2011-07-20 19:28 UTC|newest]

Thread overview: 53+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-07-16  6:56 Ian Lance Taylor
2011-07-16  7:05 ` Andrew Pinski
2011-07-16  7:48   ` Ian Lance Taylor
2011-07-16  7:59     ` Basile Starynkevitch
2011-07-17  3:17       ` Ian Lance Taylor
2011-07-16 16:11 ` Diego Novillo
2011-07-16 22:58   ` Ian Lance Taylor
2011-07-17 10:36     ` Richard Guenther
2011-07-17 12:21       ` Eric Botcazou
2011-07-17 16:55         ` Richard Guenther
2011-07-17 17:55           ` Markus Trippelsdorf
2011-07-17 22:37             ` Markus Trippelsdorf
2011-09-04 17:20   ` Thomas Schwinge
2011-07-16 20:40 ` Toon Moene
2011-07-19 21:33 ` Ian Lance Taylor
2011-07-19 22:24   ` Gabriel Dos Reis
2011-07-20  0:46   ` H.J. Lu
2011-07-20  1:15     ` H.J. Lu
2011-07-20  6:28   ` David Edelsohn
2011-07-20  9:34     ` Jonathan Wakely
2011-07-20 11:02       ` Jonathan Wakely
2011-07-20 12:41         ` David Edelsohn
2011-07-20 12:48           ` Richard Guenther
2011-07-20 14:07             ` Diego Novillo
2011-07-20 14:34               ` Ian Lance Taylor
2011-07-20 15:35                 ` Jonathan Wakely
2011-07-20 15:06   ` Toon Moene
2011-07-20 15:23     ` Ian Lance Taylor
2011-07-20 15:53       ` David Edelsohn
2011-07-20 15:55         ` Ian Lance Taylor
2011-07-20 20:05           ` David Edelsohn [this message]
2011-07-20 20:53             ` Ian Lance Taylor
2011-07-20 21:06               ` Mike Stump
2011-07-21  0:10                 ` Ian Lance Taylor
2011-07-21  9:40                   ` Basile Starynkevitch
2011-07-21 16:06                     ` Ian Lance Taylor
2011-07-21 17:44                       ` Jakub Jelinek
2011-07-21 19:40                         ` Ian Lance Taylor
2011-07-21 20:12                           ` Basile Starynkevitch
2011-07-21 22:38                             ` Ian Lance Taylor
2011-07-21  6:57                 ` David Edelsohn
2011-07-21  7:25                   ` Eric Botcazou
2011-07-21 14:24               ` David Edelsohn
2011-07-20 17:58         ` Thomas Schwinge
2011-07-20 21:41     ` Toon Moene
2011-07-31 23:20 ` Marc Glisse
2011-08-01  9:14   ` Richard Guenther
2011-08-01  9:53     ` Joseph S. Myers
2011-08-01  9:59       ` Richard Guenther
2011-08-01 10:05       ` Marc Glisse
2011-08-08 17:42 ` Romain Geissler
2011-08-08 18:49   ` Ian Lance Taylor
2011-08-08 19:40     ` Romain Geissler

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