[Bug bootstrap/86872] New: [9 Regression] LTO bootstrap failed with profiledbootstrap

["hjl.tools at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86872

            Bug ID: 86872
           Summary: [9 Regression] LTO bootstrap failed with
                    profiledbootstrap
           Product: gcc
           Version: 9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
          Assignee: unassigned at gcc dot gnu.org
          Reporter: hjl.tools at gmail dot com
  Target Milestone: ---

On x86-64, r263300 gave

In function ‘gimple_simplify_32’:
lto1: internal compiler error: in linemap_check_ordinary, at
libcpp/include/line-map.h:587
0x5e2991 ???
        ../../src-trunk/libcpp/include/line-map.h:587
0x93aeae ???
        ../../src-trunk/libcpp/line-map.c:754
0x1d653e2 ???
        ../../src-trunk/gcc/lto-streamer-in.c:194
0x1d6661f ???
        ../../src-trunk/gcc/lto-streamer-in.c:304
0xbc5f88 ???
        ../../src-trunk/gcc/gimple-streamer-in.c:111
0x91d3c7 lto_read_body_or_constructor(lto_file_decl_data*, symtab_node*, char
const*, lto_section_type) [clone .isra.95] [clone .constprop.697]
        ../../src-trunk/gcc/lto-streamer-in.c:1092
0x22631cd ???
        ../../src-trunk/gcc/lto-streamer-in.c:1343
0x226e950 ???
        ../../src-trunk/gcc/cgraphunit.c:2086
0x227fa1b ???
        ../../src-trunk/gcc/cgraphunit.c:2254
0x23a9564 ???
        ../../src-trunk/gcc/lto/lto.c:3426
0x1ab4a59 ???
        ../../src-trunk/gcc/toplev.c:455
0x1ab7d67 ???
        ../../src-trunk/gcc/toplev.c:2161
0x904cca ???
        ../../src-trunk/gcc/main.c:39
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.

when GCC is configured with

--with-build-config=bootstrap-lto --disable-werror

and built with profiledbootstrap. r263286 is OK.