[Bug bootstrap/64675] New: [5 Regression] internal compiler error: tree check: expected function_decl, have <invalid tree code> in opts_for_fn, at tree.h:4706

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64675

            Bug ID: 64675
           Summary: [5 Regression] internal compiler error: tree check:
                    expected function_decl, have <invalid tree code> in
                    opts_for_fn, at tree.h:4706
           Product: gcc
           Version: 5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
          Assignee: unassigned at gcc dot gnu.org
          Reporter: hjl.tools at gmail dot com

On Linux/x86-64, r219824 gave

lto1: internal compiler error: tree check: expected function_decl, have
<invalid tree code> in opts_for_fn, at tree.h:4706
0x12bffc3 tree_check_failed(tree_node const*, char const*, int, char const*,
...)
        ../../src-trunk/gcc/tree.c:9290
0x1941714 tree_check(tree_node const*, char const*, int, char const*,
tree_code)
        ../../src-trunk/gcc/tree.h:3091
0x1941714 opts_for_fn
        ../../src-trunk/gcc/tree.h:4706
0x1941714 ipa_icf::sem_item_optimizer::filter_removed_items()
        ../../src-trunk/gcc/ipa-icf.c:1656
0x19472f5 ipa_icf::sem_item_optimizer::execute()
        ../../src-trunk/gcc/ipa-icf.c:1703
0x194e923 ipa_icf_driver
        ../../src-trunk/gcc/ipa-icf.c:2460
0x194e923 ipa_icf::pass_ipa_icf::execute(function*)
        ../../src-trunk/gcc/ipa-icf.c:2508
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
lto-wrapper: fatal error:
/export/gnu/import/git/gcc-test-profiled/bld/./prev-gcc/xg++ returned 1 exit
status
compilation terminated.

when GCC is configured with

--prefix=/usr/5.0.0 --enable-clocale=gnu --with-system-zlib --enable-shared
--with-demangler-in-ld --with-build-config=bootstrap-lto --disable-werror
--with-fpmath=sse --enable-languages=c,c++,fortran,java,lto,objc

and built with "make -j8 profiledbootstrap".