Bug 1969775

I was told on OFTC #gcc that this bug is known and was fixed in 2018:
https://sourceware.org/bugzilla/show_bug.cgi?id=23425

Can you please backport it into RHEL 8?

Description of problem:
Building Python with LTO+PGO failed once on 200 builds with a linker error:


/usr/bin/ld: Dwarf Error: Offset (2487097600) greater than or equal to .debug_str size (571933).
/usr/bin/ld: Dwarf Error: Could not find abbrev number 12095.

Version-Release number of selected component (if applicable):

* binutils-2.30-93.el8.x86_64
* gcc-8.4.1-1.el8.x86_64
* RHEL 8.4

"gcc (GCC) 8.4.1 20200928 (Red Hat 8.4.1-1)"

How reproducible:
Failure rate: 1/200

Steps to Reproduce:
1. git clone https://github.com/python/cpython/
2. cd cpython
3. ./configure --prefix '$(PWD)/target' --with-lto --enable-optimizations
4. make -j10 all

Actual results:
---
ar rcs libpython3.11.a Modules/getbuildinfo.o Parser/token.o  Parser/pegen.o Parser/parser.o Parser/string_parser.o Parser/peg_api.o Parser/myreadline.o Parser/tokenizer.o Objects/abstract.o Objects/accu.o Objects/boolobject.o Objects/bytes_methods.o Objects/bytearrayobject.o Objects/bytesobject.o Objects/call.o Objects/capsule.o Objects/cellobject.o Objects/classobject.o Objects/codeobject.o Objects/complexobject.o Objects/descrobject.o Objects/enumobject.o Objects/exceptions.o Objects/genericaliasobject.o Objects/genobject.o Objects/fileobject.o Objects/floatobject.o Objects/frameobject.o Objects/funcobject.o Objects/interpreteridobject.o Objects/iterobject.o Objects/listobject.o Objects/longobject.o Objects/dictobject.o Objects/odictobject.o Objects/memoryobject.o Objects/methodobject.o Objects/moduleobject.o Objects/namespaceobject.o Objects/object.o Objects/obmalloc.o Objects/picklebufobject.o Objects/rangeobject.o Objects/setobject.o Objects/sliceobject.o Objects/structseq.o Objects/tupleobject.o Objects/typeobject.o Objects/unicodeobject.o Objects/unicodectype.o Objects/unionobject.o Objects/weakrefobject.o Python/_warnings.o Python/Python-ast.o Python/asdl.o Python/ast.o Python/ast_opt.o Python/ast_unparse.o Python/bltinmodule.o Python/ceval.o Python/codecs.o Python/compile.o Python/context.o Python/dynamic_annotations.o Python/errors.o Python/frozenmain.o Python/future.o Python/getargs.o Python/getcompiler.o Python/getcopyright.o Python/getplatform.o Python/getversion.o Python/hamt.o Python/hashtable.o Python/import.o Python/importdl.o Python/initconfig.o Python/marshal.o Python/modsupport.o Python/mysnprintf.o Python/mystrtoul.o Python/pathconfig.o Python/preconfig.o Python/pyarena.o Python/pyctype.o Python/pyfpe.o Python/pyhash.o Python/pylifecycle.o Python/pymath.o Python/pystate.o Python/pythonrun.o Python/pytime.o Python/bootstrap_hash.o Python/specialize.o Python/structmember.o Python/symtable.o Python/sysmodule.o Python/thread.o Python/traceback.o Python/getopt.o Python/pystrcmp.o Python/pystrtod.o Python/pystrhex.o Python/dtoa.o Python/formatter_unicode.o Python/fileutils.o Python/suggestions.o Python/dynload_shlib.o    Modules/config.o Modules/getpath.o Modules/main.o Modules/gcmodule.o Modules/posixmodule.o  Modules/errnomodule.o  Modules/pwdmodule.o  Modules/_sre.o  Modules/_codecsmodule.o  Modules/_weakref.o  Modules/_functoolsmodule.o  Modules/_operator.o  Modules/_collectionsmodule.o  Modules/_abc.o  Modules/itertoolsmodule.o  Modules/atexitmodule.o  Modules/signalmodule.o  Modules/_stat.o  Modules/timemodule.o  Modules/_threadmodule.o  Modules/_localemodule.o  Modules/_iomodule.o Modules/iobase.o Modules/fileio.o Modules/bytesio.o Modules/bufferedio.o Modules/textio.o Modules/stringio.o  Modules/faulthandler.o  Modules/_tracemalloc.o  Modules/symtablemodule.o  Modules/xxsubtype.o Python/frozen.o
gcc -pthread   -fno-semantic-interposition -flto -fuse-linker-plugin -ffat-lto-objects -flto-partition=none -g -fprofile-generate -Xlinker -export-dynamic -o python Programs/python.o libpython3.11.a -lcrypt -lpthread -ldl  -lutil -lm   -lm 
gcc -pthread   -fno-semantic-interposition -flto -fuse-linker-plugin -ffat-lto-objects -flto-partition=none -g -fprofile-generate -Xlinker -export-dynamic -o Programs/_testembed Programs/_testembed.o libpython3.11.a -lcrypt -lpthread -ldl  -lutil -lm   -lm 
/usr/bin/ld: Dwarf Error: Offset (2487097600) greater than or equal to .debug_str size (571933).
/usr/bin/ld: Dwarf Error: Could not find abbrev number 12095.
/tmp/cccV00H7.lto.o: In function `signal_pthread_sigmask':
<artificial>:(.text+0x292cbc): undefined reference to `_Py_Sigset_Converter'
/tmp/cccV00H7.lto.o: In function `fill_siginfo':
<artificial>:(.text+0x2930cb): undefined reference to `_PyLong_FromUid'
/tmp/cccV00H7.lto.o: In function `signal_sigwaitinfo':
<artificial>:(.text+0x29325e): undefined reference to `_Py_Sigset_Converter'
/tmp/cccV00H7.lto.o: In function `signal_sigtimedwait':
<artificial>:(.text+0x293566): undefined reference to `_Py_Sigset_Converter'
/tmp/cccV00H7.lto.o: In function `signal_sigwait':
<artificial>:(.text+0x293af0): undefined reference to `_Py_Sigset_Converter'
/tmp/cccV00H7.lto.o: In function `PyUnicode_FSDecoder':
<artificial>:(.text+0x315fed): undefined reference to `PyOS_FSPath'
/tmp/cccV00H7.lto.o: In function `mkpwent':
<artificial>:(.text+0x31a78c): undefined reference to `_PyLong_FromUid'
<artificial>:(.text+0x31a7a1): undefined reference to `_PyLong_FromGid'
/tmp/cccV00H7.lto.o: In function `pwd_getpwuid':
<artificial>:(.text+0x31afb6): undefined reference to `_Py_Uid_Converter'
<artificial>:(.text+0x31b1df): undefined reference to `_PyLong_FromUid'
/tmp/cccV00H7.lto.o: In function `PyUnicode_FSConverter':
<artificial>:(.text+0x349247): undefined reference to `PyOS_FSPath'
/tmp/cccV00H7.lto.o: In function `_io_open':
<artificial>:(.text+0x38781d): undefined reference to `PyOS_FSPath'
/tmp/cccV00H7.lto.o:(.data+0x74528): undefined reference to `PyInit_posix'
collect2: error: ld returned 1 exit status
make[3]: *** [Makefile:603: python] Error 1
make[3]: *** Waiting for unfinished jobs....
/usr/bin/ld: Dwarf Error: Could not find abbrev number 6864.
/tmp/ccMUbctW.lto.o: In function `fill_siginfo':
<artificial>:(.text+0x1f010b): undefined reference to `_PyLong_FromUid'
/tmp/ccMUbctW.lto.o: In function `signal_sigwait':
<artificial>:(.text+0x2a6d80): undefined reference to `_Py_Sigset_Converter'
/tmp/ccMUbctW.lto.o: In function `signal_sigwaitinfo':
<artificial>:(.text+0x2a821e): undefined reference to `_Py_Sigset_Converter'
/tmp/ccMUbctW.lto.o: In function `signal_pthread_sigmask':
<artificial>:(.text+0x2b05bc): undefined reference to `_Py_Sigset_Converter'
/tmp/ccMUbctW.lto.o: In function `signal_sigtimedwait':
<artificial>:(.text+0x2b2536): undefined reference to `_Py_Sigset_Converter'
/tmp/ccMUbctW.lto.o: In function `PyUnicode_FSDecoder':
<artificial>:(.text+0x30d08d): undefined reference to `PyOS_FSPath'
/tmp/ccMUbctW.lto.o: In function `mkpwent':
<artificial>:(.text+0x30edac): undefined reference to `_PyLong_FromUid'
<artificial>:(.text+0x30edc1): undefined reference to `_PyLong_FromGid'
/tmp/ccMUbctW.lto.o: In function `pwd_getpwuid':
<artificial>:(.text+0x30f5d6): undefined reference to `_Py_Uid_Converter'
<artificial>:(.text+0x30f7ff): undefined reference to `_PyLong_FromUid'
/tmp/ccMUbctW.lto.o: In function `PyUnicode_FSConverter':
<artificial>:(.text+0x33b157): undefined reference to `PyOS_FSPath'
/tmp/ccMUbctW.lto.o: In function `_io_open':
<artificial>:(.text+0x377d0d): undefined reference to `PyOS_FSPath'
/tmp/ccMUbctW.lto.o:(.data+0x84748): undefined reference to `PyInit_posix'
collect2: error: ld returned 1 exit status
make[3]: *** [Makefile:744: Programs/_testembed] Error 1
---

Expected results:
No compiler or linker error.


I first reported the build error (linker bug) in the Python bug tracker: https://bugs.python.org/issue44358