I fail to reproduce the issue on the master branch of Python on Fedora 32:

* Python master at commit 9727694f08cad4b019d2939224e3416312b1c0e1
* Fedora 32
* gcc (GCC) 10.1.1
* GNU gdb (GDB) Fedora 9.1-5.fc32

Notice that multiple tests are skipped:

$ ./configure --with-lto && make && ./python -m test -v test_gdb 
(...)
gcc -pthread -fPIC -Wno-unused-result -Wsign-compare -DNDEBUG -g -fwrapv -O3 -Wall -flto -fuse-linker-plugin -ffat-lto-objects -flto-partition=none -g -std=c99 (...)
(...)
== CPython 3.10.0a0 (heads/master:9727694f08, Jun 11 2020, 15:31:25) [GCC 10.1.1 20200507 (Red Hat 10.1.1-1)]
== Linux-5.6.16-300.fc32.x86_64-x86_64-with-glibc2.31 little-endian
== cwd: /home/vstinner/python/master/build/test_python_139705
== CPU count: 8
== encodings: locale=UTF-8, FS=utf-8
0:00:00 load avg: 2.77 Run tests sequentially
0:00:00 load avg: 2.77 [1/1] test_gdb
GDB version 9.1:
    GNU gdb (GDB) Fedora 9.1-5.fc32
    Copyright (C) 2020 Free Software Foundation, Inc.
    License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
    This is free software: you are free to change and redistribute it.
    There is NO WARRANTY, to the extent permitted by law.
test_NULL_ob_type (test.test_gdb.PrettyPrintTests)
Ensure that a PyObject* with NULL ob_type is handled gracefully ... ok
test_NULL_ptr (test.test_gdb.PrettyPrintTests)
Ensure that a NULL PyObject* is handled gracefully ... ok
test_builtin_method (test.test_gdb.PrettyPrintTests) ... ok
test_builtins_help (test.test_gdb.PrettyPrintTests)
Ensure that the new-style class _Helper in site.py can be handled ... ok
test_bytes (test.test_gdb.PrettyPrintTests)
Verify the pretty-printing of bytes ... ok
test_corrupt_ob_type (test.test_gdb.PrettyPrintTests)
Ensure that a PyObject* with a corrupt ob_type is handled gracefully ... ok
test_corrupt_tp_flags (test.test_gdb.PrettyPrintTests)
Ensure that a PyObject* with a type with corrupt tp_flags is handled ... ok
test_corrupt_tp_name (test.test_gdb.PrettyPrintTests)
Ensure that a PyObject* with a type with corrupt tp_name is handled ... ok
test_dicts (test.test_gdb.PrettyPrintTests)
Verify the pretty-printing of dictionaries ... ok
test_exceptions (test.test_gdb.PrettyPrintTests) ... ok
test_frames (test.test_gdb.PrettyPrintTests) ... ok
test_frozensets (test.test_gdb.PrettyPrintTests)
Verify the pretty-printing of frozensets ... ok
test_getting_backtrace (test.test_gdb.PrettyPrintTests) ... ok
test_int (test.test_gdb.PrettyPrintTests)
Verify the pretty-printing of various int values ... ok
test_lists (test.test_gdb.PrettyPrintTests)
Verify the pretty-printing of lists ... ok
test_modern_class (test.test_gdb.PrettyPrintTests)
Verify the pretty-printing of new-style class instances ... ok
test_selfreferential_dict (test.test_gdb.PrettyPrintTests)
Ensure that a reference loop involving a dict doesn't lead proxyval ... ok
test_selfreferential_list (test.test_gdb.PrettyPrintTests)
Ensure that a reference loop involving a list doesn't lead proxyval ... ok
test_selfreferential_new_style_instance (test.test_gdb.PrettyPrintTests) ... ok
test_selfreferential_old_style_instance (test.test_gdb.PrettyPrintTests) ... ok
test_sets (test.test_gdb.PrettyPrintTests)
Verify the pretty-printing of sets ... ok
test_singletons (test.test_gdb.PrettyPrintTests)
Verify the pretty-printing of True, False and None ... ok
test_strings (test.test_gdb.PrettyPrintTests)
Verify the pretty-printing of unicode strings ... ok
test_subclassing_list (test.test_gdb.PrettyPrintTests)
Verify the pretty-printing of an instance of a list subclass ... ok
test_subclassing_tuple (test.test_gdb.PrettyPrintTests)
Verify the pretty-printing of an instance of a tuple subclass ... ok
test_truncation (test.test_gdb.PrettyPrintTests)
Verify that very long output is truncated ... ok
test_tuples (test.test_gdb.PrettyPrintTests)
Verify the pretty-printing of tuples ... ok
test_bt (test.test_gdb.PyBtTests)
Verify that the "py-bt" command works ... skipped 'Python was compiled with optimizations'
test_bt_full (test.test_gdb.PyBtTests)
Verify that the "py-bt-full" command works ... skipped 'Python was compiled with optimizations'
test_gc (test.test_gdb.PyBtTests)
Verify that "py-bt" indicates if a thread is garbage-collecting ... skipped 'Python was compiled with optimizations'
test_pycfunction (test.test_gdb.PyBtTests)
Verify that "py-bt" displays invocations of PyCFunction instances ... skipped 'Python was compiled with optimizations'
test_threads (test.test_gdb.PyBtTests)
Verify that "py-bt" indicates threads that are waiting for the GIL ... ok
test_wrapper_call (test.test_gdb.PyBtTests) ... skipped 'Python was compiled with optimizations'
test_basic_command (test.test_gdb.PyListTests)
Verify that the "py-list" command works ... skipped 'Python was compiled with optimizations'
test_one_abs_arg (test.test_gdb.PyListTests)
Verify the "py-list" command with one absolute argument ... skipped 'Python was compiled with optimizations'
test_two_abs_args (test.test_gdb.PyListTests)
Verify the "py-list" command with two absolute arguments ... skipped 'Python was compiled with optimizations'
test_basic_command (test.test_gdb.PyLocalsTests) ... skipped 'Python was compiled with optimizations'
test_locals_after_up (test.test_gdb.PyLocalsTests) ... skipped 'Python was compiled with optimizations'
test_basic_command (test.test_gdb.PyPrintTests)
Verify that the "py-print" command works ... skipped 'Python was compiled with optimizations'
test_print_after_up (test.test_gdb.PyPrintTests) ... skipped 'Python was compiled with optimizations'
test_printing_builtin (test.test_gdb.PyPrintTests) ... skipped 'Python was compiled with optimizations'
test_printing_global (test.test_gdb.PyPrintTests) ... skipped 'Python was compiled with optimizations'
test_down_at_bottom (test.test_gdb.StackNavigationTests)
Verify handling of "py-down" at the bottom of the stack ... ok
test_pyup_command (test.test_gdb.StackNavigationTests)
Verify that the "py-up" command works ... skipped 'Python was compiled with optimizations'
test_up_at_top (test.test_gdb.StackNavigationTests)
Verify handling of "py-up" at the top of the stack ... ok
test_up_then_down (test.test_gdb.StackNavigationTests)
Verify "py-up" followed by "py-down" ... skipped 'Python was compiled with optimizations'

----------------------------------------------------------------------

Ran 46 tests in 84.636s

OK (skipped=16)
test_gdb passed in 1 min 25 sec

== Tests result: SUCCESS ==

1 test OK.

Total duration: 1 min 25 sec
Tests result: SUCCESS