[NSS_TACACS]When I was preparing to support gcov in nss, I found an error.

[zhuangjh3]

I added the following in configure.ac, it can be compiled normally.

if test "x$enable_gcov" = "xyes"; then
    CFLAGS+=" -fprofile-arcs -ftest-coverage"
    LIBS+=" -fprofile-arcs -lgcov"
fi

But when I run AAA on the device, it produces a coredump,GDB debugging results are as follows：
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `sshd: admin [net] '.
Program terminated with signal SIGSYS, Bad system call.
#0 0x00007f19c20ae9c7 in access () from /lib/x86_64-linux-gnu/libc.so.6
(gdb) bt full
#0 0x00007f19c20ae9c7 in access () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#1 0x00007f19c3f3d49c in gcov_do_dump () from /lib/x86_64-linux-gnu/libnss_tacplus.so.2
No symbol table info available.
#2 0x00007f19c3f3e30e in gcov_exit () from /lib/x86_64-linux-gnu/libnss_tacplus.so.2
No symbol table info available.
#3 0x00007f19c2008940 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#4 0x00007f19c200899a in exit () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#5 0x00005630c560a764 in ?? ()
No symbol table info available.
#6 0x00007f19c1ff32e1 in __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#7 0x00005630c560ba3a in ?? ()
No symbol table info available.
(gdb)
and the Profiling *.gcda:Cannot open: