Based on .a and .so files installed by Ubuntu in the bionic and mantic releases.

libc_2.27_vs_2.38_removed.list

_IO_flush_all_lockp
_IO_getdelim
_IO_helper_overflow
_IO_obstack_overflow
_IO_obstack_printf
_IO_obstack_vprintf
_IO_obstack_xsputn
_IO_str_chk_overflow
_IO_strn_overflow
_IO_vasprintf
_IO_vdprintf
_IO_vfprintf_internal
_IO_vfscanf
_IO_vfscanf_internal
_IO_vfwprintf
_IO_vfwscanf
_IO_vsnprintf
_IO_vswprintf
_IO_wstrn_overflow
_ZGVbN2v___exp_finite
_ZGVbN2v___log_finite
_ZGVbN2vv___pow_finite
_ZGVbN4v___expf_finite
_ZGVbN4v___logf_finite
_ZGVbN4vv___powf_finite
_ZGVcN4v___exp_finite
_ZGVcN4v___log_finite
_ZGVcN4vv___pow_finite
_ZGVcN8v___expf_finite
_ZGVcN8v___logf_finite
_ZGVcN8vv___powf_finite
_ZGVdN4v___exp_finite
_ZGVdN4v___log_finite
_ZGVdN4vv___pow_finite
_ZGVdN8v___expf_finite
_ZGVdN8v___logf_finite
_ZGVdN8vv___powf_finite
_ZGVeN16v___expf_finite
_ZGVeN16v___logf_finite
_ZGVeN16vv___powf_finite
_ZGVeN8v___exp_finite
_ZGVeN8v___log_finite
_ZGVeN8vv___pow_finite
__GI___fxstatat64
__GI___readdir64
__IO_vsprintf
__acosf128_finite
__acosf_finite
__acosh_finite
__acoshf128_finite
__acoshf_finite
__acoshl_finite
__acosl_finite
__acr
__add
__add_avx
__add_fma
__add_fma4
__asinf128_finite
__asinf_finite
__asinl_finite
__atan2f128_finite
__atan2f_finite
__atan2l_finite
__atanh_finite
__atanhf128_finite
__atanhf_finite
__atanhl_finite
__b64_from_24bit
__bsd_getpt
__c32
__c32_fma
__c32_fma4
__cos32
__cos32_fma
__cos32_fma4
__cosh_finite
__coshf128_finite
__coshf_finite
__coshl_finite
__cpy
__crypt_r
__dbl_mp
__dbl_mp_avx
__dbl_mp_fma
__dbl_mp_fma4
__deallocate_stack
__default_morecore
__dn_comp
__dn_expand
__dn_skipname
__doasin
__doasin_fma
__doasin_fma4
__docos
__docos_fma
__docos_fma4
__dubcos
__dubcos_fma
__dubcos_fma4
__dubsin
__dubsin_fma
__dubsin_fma4
__dvd
__dvd_avx
__dvd_fma
__dvd_fma4
__encrypt_r
__exp1
__exp10_finite
__exp10f128_finite
__exp10f_finite
__exp10l_finite
__exp1_avx
__exp1_fma
__exp1_fma4
__exp2_finite
__exp2f128_finite
__exp2l_finite
__expf128_finite
__expl_finite
__fcntl_nocancel
__find_in_stack_list
__find_thread_by_id
__fmod_finite
__fmodf128_finite
__fmodf_finite
__fmodl_finite
__fortify_fail_abort
__free_stacks
__free_tcb
__gamma_r_finite
__gammaf128_r_finite
__gammaf_r_finite
__gammal_r_finite
__get_clockfreq
__get_cpu_features
__get_socket
__guess_grouping
__halfulp
__halfulp_fma
__halfulp_fma4
__hypot_finite
__hypotf128_finite
__hypotf_finite
__hypotl_finite
__idna_to_ascii_lz
__idna_to_unicode_lzlz
__ieee754_rem_pio2f
__inet_aton
__init_des
__init_des_r
__internal_statvfs
__isnanf128
__ivaliduser
__j0_finite
__j0f128_finite
__j0f_finite
__j0l_finite
__j1_finite
__j1f128_finite
__j1f_finite
__j1l_finite
__jn_finite
__jnf128_finite
__jnf_finite
__jnl_finite
__kernel_cosf
__kernel_rem_pio2f
__kernel_sinf
__lgamma_r_finite
__lgammaf128_r_finite
__lgammaf_r_finite
__lgammal_r_finite
__libc_allocate_rtsig_private
__libc_cleanup_routine
__libc_csu_fini
__libc_csu_init
__libc_current_sigrtmax_private
__libc_current_sigrtmin_private
__libc_disable_asynccancel
__libc_enable_asynccancel
__libc_init_secure
__libc_pthread_init
__libc_register_dl_open_hook
__libc_register_dlfcn_hook
__libc_rpc_gethostbyname
__libc_rpc_getport
__libc_wait
__librt_disable_asynccancel
__librt_enable_asynccancel
__linkin_atfork
__lio_listio64_item_notify
__lio_listio_item_notify
__lll_timedlock_elision
__lll_timedlock_wait
__lll_timedwait_tid
__lll_unlock_wake
__lll_unlock_wake_private
__log10_finite
__log10f128_finite
__log10f_finite
__log2_finite
__log2f128_finite
__logf128_finite
__make_stacks_executable
__malloc_check_init
__md5_buffer
__md5_crypt
__md5_crypt_r
__md5_finish_ctx
__md5_init_ctx
__md5_process_block
__md5_process_bytes
__md5_read_ctx
__md5_stream
__memcmp_sse4_1
__memcmp_ssse3
__memcpy_chk_ssse3
__memcpy_chk_ssse3_back
__memcpy_ssse3_back
__memmove_chk_ssse3
__memmove_chk_ssse3_back
__memmove_ssse3_back
__mempcpy_chk_ssse3
__mempcpy_chk_ssse3_back
__mempcpy_ssse3_back
__memset_avx2_erms
__memset_avx512_erms
__mp_dbl
__mpatan
__mpatan2
__mpatan2_fma
__mpatan2_fma4
__mpatan_fma
__mpatan_fma4
__mpcos
__mpcos_fma
__mpcos_fma4
__mpexp
__mpexp_avx
__mpexp_fma
__mpexp_fma4
__mplog
__mplog_avx
__mplog_fma
__mplog_fma4
__mpranred
__mpranred_fma
__mpranred_fma4
__mpsin
__mpsin_fma
__mpsin_fma4
__mpsqrt
__mpsqrt_fma
__mpsqrt_fma4
__mptan
__mptan_fma
__mptan_fma4
__msgwrite
__mul
__mul_avx
__mul_fma
__mul_fma4
__nanosleep_nocancel
__new_msgctl
__new_sem_wait_slow
__new_semctl
__new_shmctl
__nptl_set_robust
__nptl_setxid_error
__nss_database_lookup
__nss_next
__pause_nocancel
__powf128_finite
__powl_finite
__printf_fp_l
__printf_fphex
__pthread_attr_init_2_1
__pthread_attr_setaffinity_new
__pthread_cleanup_pop_restore
__pthread_cleanup_push_defer
__pthread_clock_gettime
__pthread_clock_settime
__pthread_getaffinity_new
__pthread_init_static_tls
__pthread_initialize_minimal
__pthread_initialize_minimal_internal
__pthread_mutexattr_destroy
__pthread_rwlock_destroy
__pthread_rwlock_tryrdlock
__pthread_rwlock_trywrlock
__pthread_timedjoin_ex
__pthread_timedjoin_np
__ptsname_internal
__reclaim_stacks
__registerrpc
__remainder_finite
__remainderf128_finite
__remainderf_finite
__remainderl_finite
__res_dnok
__res_hnok
__res_mailok
__res_mkquery
__res_nmkquery
__res_nquery
__res_nquerydomain
__res_nsearch
__res_nsend
__res_ownok
__res_query
__res_querydomain
__res_search
__res_send
__roundeven
__roundevenf
__rpc_thread_clnt_cleanup
__rpc_thread_createerr
__rpc_thread_key_cleanup
__rpc_thread_svc_cleanup
__rpc_thread_svc_fdset
__rpc_thread_svc_max_pollfd
__rpc_thread_svc_pollfd
__rpc_thread_variables
__scalb_finite
__scalbf_finite
__scalbl_finite
__scandir_tail
__scandirat
__sched_cpucount_ifunc
__sem_search
__setkey_r
__sha256_crypt
__sha256_crypt_r
__sha256_finish_ctx
__sha256_init_ctx
__sha256_process_block
__sha256_process_bytes
__sha512_crypt
__sha512_crypt_r
__sha512_finish_ctx
__sha512_init_ctx
__sha512_process_block
__sha512_process_bytes
__shm_directory
__sin32
__sin32_fma
__sin32_fma4
__sincos
__sinh_finite
__sinhf128_finite
__sinhf_finite
__sinhl_finite
__slowexp
__slowexp_avx
__slowexp_fma
__slowexp_fma4
__slowpow
__slowpow_fma
__slowpow_fma4
__sqr
__sqr_avx
__sqr_fma
__sqr_fma4
__sqrt_finite
__sqrtf128_finite
__sqrtf_finite
__sqrtl_finite
__start_helper_thread
__stpcpy_ssse3
__stpncpy_sse2
__stpncpy_ssse3
__strcasecmp_avx
__strcasecmp_l_avx
__strcasecmp_l_ssse3
__strcasecmp_ssse3
__strcat_ssse3
__strcmp_ssse3
__strcpy_ssse3
__strcspn_sse2
__strncasecmp_avx
__strncasecmp_l_avx
__strncasecmp_l_ssse3
__strncasecmp_ssse3
__strncat
__strncat_sse2
__strncat_ssse3
__strncmp_ssse3
__strncpy_sse2
__strncpy_ssse3
__strpbrk_sse2
__strspn_sse2
__strstr_sse2
__sub
__sub_avx
__sub_fma
__sub_fma4
__svc_accept_failed
__sysctl
__timer_create_new
__timer_delete_new
__timer_getoverrun_new
__timer_gettime_new
__timer_settime_new
__vstrfmon_l
__wait_lookup_done
__waitpid_nocancel
__wcpcpy
__wcpncpy
__wcscat
__wcscmp
__wcscpy_sse2
__wcsncpy
__wcsnlen_sse2
__wmemcmp_sse4_1
__wmemcmp_ssse3
__xmknod
__xmknodat
__y0_finite
__y0f128_finite
__y0f_finite
__y0l_finite
__y1_finite
__y1f128_finite
__y1f_finite
__y1l_finite
__yn_finite
__ynf128_finite
__ynf_finite
__ynl_finite
__yp_check
_create_xid
_des_crypt
_dl_build_local_scope
_dl_call_pltexit
_dl_discover_osversion
_dl_important_hwcaps
_dl_make_stack_executable
_dl_next_tls_modid
_dl_nothread_init_static_tls
_dl_tlsdesc_resolve_hold
_dl_tlsdesc_resolve_hold_fixup
_dl_tlsdesc_resolve_rela
_dl_tlsdesc_resolve_rela_fixup
_dl_tunable_set_mallopt_check
_dl_vdso_vsym
_fxstat
_i18n_number_rewrite
_lxstat
_nsl_default_nss
_openchild
_pthread_cleanup_pop_restore
_pthread_cleanup_push_defer
_svcauth_des
_svcauth_null
_ufc_dofinalperm_r
_ufc_doit_r
_ufc_mk_keytab_r
_ufc_output_conversion_r
_ufc_setup_salt_r
_xmknod
_xstat
add_to_global
authdes_destroy
authdes_getucred
authdes_marshal
authdes_nextverf
authdes_refresh
authdes_validate
authnone_create_once
buffered_vfprintf
cbc_crypt
check_add_mapping
clntraw_abort
clntraw_call
clntraw_control
clntraw_destroy
clntraw_freeres
clntraw_geterr
clnttcp_abort
clnttcp_call
clnttcp_control
clnttcp_destroy
clnttcp_freeres
clnttcp_geterr
clntudp_abort
clntudp_call
clntudp_control
clntudp_destroy
clntudp_freeres
clntudp_geterr
clntunix_abort
clntunix_call
clntunix_control
clntunix_destroy
clntunix_freeres
clntunix_geterr
convert_and_print
des_setparity
dlclose_doit
do_always_noconv
do_encoding
do_in
do_length
do_max_length
do_out
do_unshift
ecb_crypt
elision_init
encrypt
encrypt_r
endutent_file
endutent_unknown
fattach
fcrypt
fdetach
fillin_rpath
fini
fips_enabled_p
free_check
free_key_mem
freehook
gamma_positive
generic_cpucount
getmsg
getpmsg
getsecretkey
getttyname
getutent_r_file
getutent_r_unknown
getutid_r_file
getutid_r_unknown
getutline_r_file
getutline_r_unknown
init_cacheinfo
isastream
latlon2ul
llseek
load_dso
lose
mabort
malloc_check
malloc_hook_ini
mallochook
memalign_check
memalign_hook_ini
memalignhook
mremap_chunk
new_heap
next_line
nfsservctl
nop
normalized
nrl_domainname
nss_parse_service_list
oom
open_path
passwd2des
passwd2des_internal
popcount_cpucount
process_entry
pthread_mutex_consistent_np
pthread_mutexattr_getkind_np
pthread_mutexattr_getrobust_np
pthread_mutexattr_setkind_np
pthread_mutexattr_setrobust_np
pthread_yield
putmsg
putpmsg
pututline_file
pututline_unknown
readtcp
readunix
realloc_check
realloc_hook_ini
reallochook
res_ourserver_p
reset_helper_control
reset_once
roundeven
roundevenf
roundevenf32
roundevenf32x
roundevenf64
rpc_thread_multi
set_regs
setkey
setkey_r
setutent_file
setutent_unknown
sighandler_setxid
sincos
sincosf32x
sincosf64
sstk
stime
sub_magnitudes
svcraw_destroy
svcraw_freeargs
svcraw_getargs
svcraw_recv
svcraw_reply
svcraw_stat
svctcp_destroy
svctcp_freeargs
svctcp_getargs
svctcp_recv
svctcp_rendezvous_abort
svctcp_reply
svctcp_stat
svcudp_destroy
svcudp_enablecache
svcudp_freeargs
svcudp_getargs
svcudp_recv
svcudp_reply
svcudp_stat
svcunix_destroy
svcunix_freeargs
svcunix_getargs
svcunix_recv
svcunix_rendezvous_abort
svcunix_reply
svcunix_stat
sysctl
sysmalloc
tanMp
tr_break
tr_freehook
tr_mallochook
tr_memalignhook
tr_reallochook
tr_where
updwtmp_file
ustat
vtimes
wcpcpy
wcpncpy
wcscat
wcscmp
wcscpy_ifunc
wcsncat
wcsncmp
wcsncpy
where_is_shmfs
wmemcmp_ifunc
writetcp
writeunix
x_putint32
xdecrypt
xdr_attrstat
xdr_authdes_cred
xdr_authdes_verf
xdr_bp_address
xdr_bp_fileid_t
xdr_bp_getfile_arg
xdr_bp_getfile_res
xdr_bp_machine_name_t
xdr_bp_path_t
xdr_bp_whoami_arg
xdr_bp_whoami_res
xdr_createargs
xdr_dirlist
xdr_diropargs
xdr_diropokres
xdr_diropres
xdr_dirpath
xdr_entry
xdr_exportnode
xdr_exports
xdr_fattr
xdr_fhandle
xdr_fhstatus
xdr_filename
xdr_fsh_access
xdr_fsh_mode
xdr_ftype
xdr_getquota_args
xdr_getquota_rslt
xdr_gqr_status
xdr_groupnode
xdr_groups
xdr_ip_addr_t
xdr_klm_holder
xdr_klm_lock
xdr_klm_lockargs
xdr_klm_stat
xdr_klm_stats
xdr_klm_testargs
xdr_klm_testrply
xdr_klm_unlockargs
xdr_linkargs
xdr_ltchars
xdr_mapname
xdr_mon
xdr_mon_id
xdr_mountbody
xdr_mountlist
xdr_my_id
xdr_name
xdr_nfs_fh
xdr_nfscookie
xdr_nfspath
xdr_nfsstat
xdr_nfstime
xdr_nlm_cancargs
xdr_nlm_holder
xdr_nlm_lock
xdr_nlm_lockargs
xdr_nlm_notify
xdr_nlm_res
xdr_nlm_share
xdr_nlm_shareargs
xdr_nlm_shareres
xdr_nlm_stat
xdr_nlm_stats
xdr_nlm_testargs
xdr_nlm_testres
xdr_nlm_testrply
xdr_nlm_unlockargs
xdr_passwd
xdr_peername
xdr_readargs
xdr_readdirargs
xdr_readdirres
xdr_readlinkres
xdr_readokres
xdr_readres
xdr_renameargs
xdr_res
xdr_rex_result
xdr_rex_start
xdr_rex_ttymode
xdr_rex_ttysize
xdr_rexstring
xdr_rquota
xdr_rstat_timeval
xdr_rusers_utmp
xdr_sattr
xdr_sattrargs
xdr_sgttyb
xdr_sm_name
xdr_sm_stat
xdr_sm_stat_res
xdr_sprayarr
xdr_spraycumul
xdr_spraytimeval
xdr_statfsokres
xdr_statfsres
xdr_stats
xdr_statsswtch
xdr_statstime
xdr_status
xdr_symlinkargs
xdr_tchars
xdr_utmp
xdr_utmp_array
xdr_utmparr
xdr_utmpidle
xdr_utmpidlearr
xdr_utmpidleptr
xdr_utmpptr
xdr_writeargs
xdr_yp_buf
xdr_ypbind_binding
xdr_ypbind_resp
xdr_ypbind_setdom
xdr_ypdelete_args
xdr_yppasswd
xdr_yppush_status
xdr_ypupdate_args
xdrmem_getint32
xdrmem_getlong
xdrmem_inline
xdrmem_putint32
xdrmem_putlong
xdrrec_getint32
xdrrec_putint32
xdrstdio_getint32
xdrstdio_putint32
xencrypt
yp_update