[Bug middle-end/55595] New: [google] r172952 (LIPO) broke profiledbootstrap on google/main, and later in google/gcc-4_7

[matt at use dot net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55595

             Bug #: 55595
           Summary: [google] r172952 (LIPO) broke profiledbootstrap on
                    google/main, and later in google/gcc-4_7
    Classification: Unclassified
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: major
          Priority: P3
         Component: middle-end
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: matt@use.net


starting with r172592, google/main fails profiledbootstrap with the error
below. going one revision back eliminates the error. later commits
compound/mutate the profiledbootstrap failures; once this bug is fixed, I'll
retest.

$ rm -rf *

$ ../google-main/configure --program-suffix=-google-4.7 --prefix=/u/mhargett
--enable-languages=c,c++,lto --enable-lto --with-fpmath=sse
--disable-libmudflap --disable-libssp --enable-build-with-cxx --enable-gold=yes
--with-mpc=/u/mhargett --with-gmp=/u/mhargett/ --with-mpfr=/u/mhargett/
--disable-multilib --disable-libgomp --disable-werror

$ make -j1 profiledbootstrap

if [ x"-fpic" != x ]; then \
      /work/mhargett/google-main-obj/./prev-gcc/xgcc
-B/work/mhargett/google-main-obj/./prev-gcc/
-B/u/mhargett/x86_64-unknown-linux-gnu/bin/
-B/u/mhargett/x86_64-unknown-linux-gnu/bin/
-B/u/mhargett/x86_64-unknown-linux-gnu/lib/ -isystem
/u/mhargett/x86_64-unknown-linux-gnu/include -isystem
/u/mhargett/x86_64-unknown-linux-gnu/sys-include    -c -DHAVE_CONFIG_H -g -O2
-fprofile-use  -I. -I../../google-main/libiberty/../include  -W -Wall
-Wwrite-strings -Wc++-compat -Wstrict-prototypes -pedantic  -fpic
../../google-main/libiberty/cp-demangle.c -o pic/cp-demangle.o; \
    else true; fi
../../google-main/libiberty/cp-demangle.c: In function
\u2018is_ctor_or_dtor\u2019:
../../google-main/libiberty/cp-demangle.c:5172:1: error: coverage mismatch for
function \u2018is_ctor_or_dtor\u2019 while reading counter \u2018arcs\u2019
[-Werror=coverage-mismatch]
../../google-main/libiberty/cp-demangle.c:5172:1: note: number of counters is 7
instead of 8
../../google-main/libiberty/cp-demangle.c: In function
\u2018d_demangle_callback\u2019:
../../google-main/libiberty/cp-demangle.c:5172:1: error: coverage mismatch for
function \u2018d_demangle_callback\u2019 while reading counter \u2018arcs\u2019
[-Werror=coverage-mismatch]
../../google-main/libiberty/cp-demangle.c:5172:1: note: number of counters is
25 instead of 26
../../google-main/libiberty/cp-demangle.c: In function
\u2018d_ctor_dtor_name\u2019:
../../google-main/libiberty/cp-demangle.c:5172:1: error: coverage mismatch for
function \u2018d_ctor_dtor_name\u2019 while reading counter \u2018arcs\u2019
[-Werror=coverage-mismatch]
../../google-main/libiberty/cp-demangle.c:5172:1: note: number of counters is
20 instead of 18
../../google-main/libiberty/cp-demangle.c: In function
\u2018d_operator_name\u2019:
../../google-main/libiberty/cp-demangle.c:5172:1: error: coverage mismatch for
function \u2018d_operator_name\u2019 while reading counter \u2018arcs\u2019
[-Werror=coverage-mismatch]
../../google-main/libiberty/cp-demangle.c:5172:1: note: number of counters is
21 instead of 20
../../google-main/libiberty/cp-demangle.c: In function \u2018d_make_name\u2019:
../../google-main/libiberty/cp-demangle.c:5172:1: error: coverage mismatch for
function \u2018d_make_name\u2019 while reading counter \u2018arcs\u2019
[-Werror=coverage-mismatch]
../../google-main/libiberty/cp-demangle.c:5172:1: note: number of counters is 5
instead of 4
cc1: some warnings being treated as errors