php 7.1.14 breaks with libreadline.so.8 update

[andreasbaumann]

$this->bbcode_second_pass_code('', '
ldd /usr/bin/php
linux-vdso.so.1 (0x7edb3000)
libresolv.so.2 => /usr/lib/libresolv.so.2 (0x766a1000)
libreadline.so.7 => /usr/lib/libreadline.so.7 (0x76652000)
libz.so.1 => /usr/lib/libz.so.1 (0x7662d000)
libpcre.so.1 => /usr/lib/libpcre.so.1 (0x765b5000)
libm.so.6 => /usr/lib/libm.so.6 (0x76533000)
libdl.so.2 => /usr/lib/libdl.so.2 (0x76520000)
libxml2.so.2 => /usr/lib/libxml2.so.2 (0x763e2000)
libssl.so.1.1 => /usr/lib/libssl.so.1.1 (0x76364000)
libcrypto.so.1.1 => /usr/lib/libcrypto.so.1.1 (0x76163000)
libc.so.6 => /usr/lib/libc.so.6 (0x76016000)
/lib/ld-linux-armhf.so.3 => /usr/lib/ld-linux-armhf.so.3 (0x76fc2000)
libncursesw.so.6 => /usr/lib/libncursesw.so.6 (0x75fb0000)
libpthread.so.0 => /usr/lib/libpthread.so.0 (0x75f84000)
libicuuc.so.63 => /usr/lib/libicuuc.so.63 (0x75dff000)
liblzma.so.5 => /usr/lib/liblzma.so.5 (0x75dce000)
libicudata.so.63 => /usr/lib/libicudata.so.63 (0x743d0000)
libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0x7427e000)
libgcc_s.so.1 => /usr/lib/libgcc_s.so.1 (0x74251000)
')

libreadline.so.8 bumped upstream.