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From: "ebotcazou at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug middle-end/65874] [5 Regression] bootstrap comparison failure (gcc/ira.o) on ia64-linux-gnu
Date: Tue, 19 May 2015 10:21:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65874

Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |WAITING
   Last reconfirmed|                            |2015-05-19
                 CC|                            |ebotcazou at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #3 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
I can bootstrap the compiler though:

(botcazou@saco) /work/botcazou/gcc-5/ia64-linux-gnu $ gcc/xgcc -v
Using built-in specs.
COLLECT_GCC=gcc/xgcc
Target: ia64-linux-gnu
Configured with: /work/botcazou/gcc-5/src/configure --build=ia64-linux-gnu
--prefix=/work/botcazou/gcc-head/install_ia64
--with-gmp=/work/botcazou/support/ia64 --with-mpfr=/work/botcazou/support/ia64
--with-mpc=/work/botcazou/support/ia64 --enable-languages=c,c++
--enable-__cxa_atexit --disable-nls --disable-libsanitizer
Thread model: posix
gcc version 5.1.0 (GCC) 

Do you have local patches?