There is no longer PLT reference to matherr in libm.
--- /dev/null
+# See scripts/check-localplt.awk for how this file is processed.
+libc.so: calloc
+libc.so: free
+libc.so: malloc
+libc.so: realloc
+# If outline atomics are used, libgcc (built outside of glibc) may
+# call __getauxval using the PLT.
+libc.so: __getauxval ?
+# The dynamic loader needs __tls_get_addr for TLS.
+ld.so: __tls_get_addr
+# The TLS-enabled version of these functions is interposed from libc.so.
+ld.so: _dl_signal_error
+ld.so: _dl_catch_error
+ld.so: _dl_signal_exception
+ld.so: _dl_catch_exception