[Bug bootstrap/51648] [4.7 Regression] Profiledbootstrap failure on x86_64-linux

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51648

--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-12-21 19:01:22 UTC ---
So, shorter/faster reproducer, using a snapshot from ~ today (tried with
r182599)
on x86_64-linux:
../configure --enable-languages=c --disable-bootstrap \
  --disable-libitm
make -j8
cd gcc
./cc1 -fpreprocessed -quiet -quiet -dumpbase gcc.c \
  -g -O2 -fexceptions -fprofile-generate /tmp/gcc.i -o /tmp/gcc.s
gcc -c -o gcc.o /tmp/gcc.s
gcc   -g -pedantic -fno-common -o xgccmy gccmy.o ggc-none.o \
  gccspec.o driver-i386.o libcommon-target.a libcommon.a \
  ../libcpp/libcpp.a   ../libiberty/libiberty.a \
  ../libdecnumber/libdecnumber.a libgcov.a
rm -f gcc.gcda
./xgccmy -qversion
./cc1 -fpreprocessed -quiet -quiet -dumpbase gcc.c \
  -g -O2 -fexceptions -fprofile-use /tmp/gcc.i -o /tmp/gcc.s

The steps before cd gcc could be left out if you have the tree built with other
options already, all it matters is if more-less similar *.o/*.a listed on the
command line are built, including libgcov.a.  /tmp/gcc.i contains the copy of
the first attachment here.