implementations/ciphers/cipher_chacha20.c

71     PROV_CHACHA20_CTX *dupctx = NULL;
74         dupctx = OPENSSL_memdup(ctx, sizeof(*dupctx));
75         if (dupctx != NULL && dupctx->base.tlsmac != NULL && dupctx->base.alloced) {
76             dupctx->base.tlsmac = OPENSSL_memdup(dupctx->base.tlsmac,
77                                                  dupctx->base.tlsmacsize);
78             if (dupctx->base.tlsmac == NULL) {
79                 OPENSSL_free(dupctx);
80                 dupctx = NULL;
84     return dupctx;