[Bug compile/29198] New: [Regression] specified bound 4294967295 may exceed maximum object size 2147483647

["danglin at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=29198

            Bug ID: 29198
           Summary: [Regression] specified bound 4294967295 may exceed
                    maximum object size 2147483647
           Product: gdb
           Version: HEAD
            Status: NEW
          Severity: normal
          Priority: P2
         Component: compile
          Assignee: unassigned at sourceware dot org
          Reporter: danglin at gcc dot gnu.org
                CC: tromey at sourceware dot org
  Target Milestone: ---
              Host: hppa*-*-linux*
            Target: hppa*-*-linux*
             Build: hppa*-*-linux*

The following compile error was introduced by commit
8839e3f3b0d1af5d93ba1d4f667ce33936bb7db2:

  CXX    debuginfod-support.o
In file included from /usr/include/c++/11/string:40,
                 from ../../src/gdb/../gdbsupport/ptid.h:36,
                 from ../../src/gdb/../gdbsupport/common-defs.h:198,
                 from ../../src/gdb/defs.h:28,
                 from ../../src/gdb/debuginfod-support.c:19:
In static member function 'static constexpr const char_type*
std::char_traits<char>::find(const char_type*, std::size_t, const char_type&)',
    inlined from 'constexpr std::basic_string_view<_CharT, _Traits>::size_type
std::basic_string_view<_CharT, _Traits>::find(_CharT,
std::basic_string_view<_CharT, _Traits>::size_type) const [with _CharT = char;
_Traits = std::char_traits<char>]' at
/usr/include/c++/11/bits/string_view.tcc:87:41,
    inlined from 'constexpr std::basic_string_view<_CharT, _Traits>::size_type
std::basic_string_view<_CharT, _Traits>::find_first_of(_CharT,
std::basic_string_view<_CharT, _Traits>::size_type) const [with _CharT = char;
_Traits = std::char_traits<char>]' at /usr/include/c++/11/string_view:431:26,
    inlined from 'bool debuginfod_is_enabled()' at
../../src/gdb/debuginfod-support.c:193:40:
/usr/include/c++/11/bits/char_traits.h:413:62: error: 'void*
__builtin_memchr(const void*, int, unsigned int)' specified bound 4294967295
may exceed maximum object size 2147483647 [-Werror=stringop-overread]
  413 |         return static_cast<const char_type*>(__builtin_memchr(__s, __a,
__n));
      |                                             
~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~
cc1plus: all warnings being treated as errors
make[2]: *** [Makefile:1659: debuginfod-support.o] Error 1
make[2]: Leaving directory '/home/dave/gnu/binutils/objdir/gdb'

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