[Bug sanitizer/61130] New: 4.9 branch (r210278) bootstrap failure

["sezeroz at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=61130

            Bug ID: 61130
           Summary: 4.9 branch (r210278) bootstrap failure
           Product: gcc
           Version: 4.9.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: sanitizer
          Assignee: unassigned at gcc dot gnu.org
          Reporter: sezeroz at gmail dot com
                CC: dodji at gcc dot gnu.org, dvyukov at gcc dot gnu.org,
                    jakub at gcc dot gnu.org, kcc at gcc dot gnu.org

$ ../gcc49.r210278/configure --enable-checking=yes --enable-languages=c,c++
--enable-lto --enable-shared --enable-threads --with-local-prefix=/usr
--prefix=/home/myname/opt/gcc490 --program-suffix=49 --bindir=/home/myname/bin
--disable-nls --disable-multilib
[...]
$ make -j2 bootstrap
[...]
libtool: compile:  /home/myname/gcc49.build/./gcc/xgcc -shared-libgcc
-B/home/myname/gcc49.build/./gcc -nostdinc++
-L/home/myname/gcc49.build/i686-pc-linux-gnu/libstdc++-v3/src
-L/home/myname/gcc49.build/i686-pc-linux-gnu/libstdc++-v3/src/.libs
-L/home/myname/gcc49.build/i686-pc-linux-gnu/libstdc++-v3/libsupc++/.libs
-B/home/myname/opt/gcc490/i686-pc-linux-gnu/bin/
-B/home/myname/opt/gcc490/i686-pc-linux-gnu/lib/ -isystem
/home/myname/opt/gcc490/i686-pc-linux-gnu/include -isystem
/home/myname/opt/gcc490/i686-pc-linux-gnu/sys-include -D_GNU_SOURCE -D_DEBUG
-D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I.
-I../../../../gcc49.r210278/libsanitizer/ubsan -I.. -I
../../../../gcc49.r210278/libsanitizer -I
../../../../gcc49.r210278/libsanitizer/include -Wall -W -Wno-unused-parameter
-Wwrite-strings -pedantic -Wno-long-long -fPIC -fno-builtin -fno-exceptions
-fno-rtti -fomit-frame-pointer -funwind-tables -fvisibility=hidden
-Wno-variadic-macros -I../../libstdc++-v3/include
-I../../libstdc++-v3/include/i686-pc-linux-gnu
-I../../../../gcc49.r210278/libsanitizer/../libstdc++-v3/libsupc++ -g -O2
-D_GNU_SOURCE -MT ubsan_handlers.lo -MD -MP -MF .deps/ubsan_handlers.Tpo -c
../../../../gcc49.r210278/libsanitizer/ubsan/ubsan_handlers.cc  -fPIC -DPIC -o
.libs/ubsan_handlers.o
In file included from
../../../../gcc49.r210278/libsanitizer/ubsan/ubsan_handlers.cc:13:0:
../../../../gcc49.r210278/libsanitizer/ubsan/ubsan_diag.h: In function 'void
handleTypeMismatchImpl(__ubsan::TypeMismatchData*, __ubsan::ValueHandle,
__ubsan::Location)':
../../../../gcc49.r210278/libsanitizer/ubsan/ubsan_diag.h:192:72: warning:
'Loc.__ubsan::Location::MemoryLoc' may be used uninitialized in this function
[-Wmaybe-uninitialized]
     : Loc(Loc), Level(Level), Message(Message), NumArgs(0), NumRanges(0) {}
                                                                        ^
../../../../gcc49.r210278/libsanitizer/ubsan/ubsan_handlers.cc:29:12: note:
'Loc.__ubsan::Location::MemoryLoc' was declared here
   Location Loc = Data->Loc.acquire();
            ^

Host bootstrap compiler:
$ gcc -v
Host bootstrap compiler:
$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/home/myname/b1/../opt/gcc480/libexec/gcc/i686-pc-linux-gnu/4.8.3/lto-wrapper
Target: i686-pc-linux-gnu
Configured with: ../gcc48.r210266/configure --enable-checking=yes
--enable-languages=c,c++ --enable-lto --enable-shared --enable-threads
--with-local-prefix=/usr --prefix=/home/myname/opt/gcc480 --program-suffix=48
--bindir=/home/myname/bin --disable-nls --disable-multilib
Thread model: posix
gcc version 4.8.3 20140509 (prerelease) (GCC)

The host i686-Linux using an old fedora9.