gc_hmac_sha512    128 maint/gnulib/lib/gc-pbkdf2.c       prf = gc_hmac_sha512;
gc_hmac_sha512    173 maint/gnulib/lib/gc.h extern Gc_rc gc_hmac_sha512 (const void *key, size_t keylen,
gc_hmac_sha512     47 maint/gnulib/tests/test-gc-hmac-sha512.c     if (gc_hmac_sha512 (key, key_len, data, data_len, out) != 0)