var _C_zero *C.mpz_t

and then replacing all instances of C.zero with (*_C_zero).

Cgo's most interesting translation is for functions.  If xxx is a C
function, then cgo rewrites C.xxx into a new function _C_xxx that
calls the C xxx in a standard pthread.  The new function translates
its arguments, calls xxx, and translates the return value.

Translation of parameters and the return value follows the type

			prefix:        "prefix",
			ExpectedRules: []Rule{{Status: Enabled, Priority: 1, DeleteMarkerReplication: DeleteMarkerReplication{Status: Enabled}, DeleteReplication: DeleteReplication{Status: Disabled}, Destination: Destination{Bucket: "destinationbucket", ARN: "arn:minio:replication:xxx::destinationbucket"}}},
		},

			args:             strings.Split("log details-v1-5b7f94f9bc-wp5tb --level xxx", " "),
			expectedString:   "unrecognized logging level: xxx",
			wantException:    true,
		},
		{ // logger name invalid
			execClientConfig: loggingConfig,
			args:             strings.Split("log details-v1-5b7f94f9bc-wp5tb --level xxx:debug", " "),
			expectedString:   "unrecognized logger name: xxx",
			wantException:    true,
		},

}

// ParseGo populates f with information learned from the Go source code
// which was read from the named file. It gathers the C preamble
// attached to the import "C" comment, a list of references to C.xxx,
// a list of exported functions, and the actual AST, to be rewritten and
// printed.
func (f *File) ParseGo(abspath string, src []byte) {
	// Two different parses: once with comments, once without.

	//
	// For each name, we generate these lines, where xxx is the index in toSniff plus one.
	//
	//	#line xxx "not-declared"
	//	void __cgo_f_xxx_1(void) { __typeof__(name) *__cgo_undefined__1; }
	//	#line xxx "not-type"
	//	void __cgo_f_xxx_2(void) { name *__cgo_undefined__2; }
	//	#line xxx "not-int-const"
	//	void __cgo_f_xxx_3(void) { enum { __cgo_undefined__3 = (name)*1 }; }
	//	#line xxx "not-num-const"

	_cgo_export.h   # for gcc
	_cgo_main.c     # for gcc
	_cgo_flags      # for build tool (if -gccgo)

The file x.cgo1.go is a copy of x.go with the import "C" removed and
references to C.xxx replaced with names like _Cfunc_xxx or _Ctype_xxx.
The definitions of those identifiers, written as Go functions, types,
or variables, are provided in _cgo_gotypes.go.

Here is a _cgo_gotypes.go containing definitions for needed C types:

			s := s.(*ast.TypeSpec)
			n := refName[&s.Type]
			if n != nil && n.Mangle != "" {
				override[n.Mangle] = s.Name.Name
			}
		}
	}

	// Extend overrides using typedefs:
	// If we know that C.xxx should format as T
	// and xxx is a typedef for yyy, make C.yyy format as T.
	for typ, def := range typedef {
		if new := override[typ]; new != "" {
			if id, ok := def.Go.(*ast.Ident); ok {
				override[id.Name] = new
			}
		}
	}

	Transition          TransitionOptions
	Expiration          ExpirationOptions
	LifecycleAuditEvent lcAuditEvent

	WantChecksum *hash.Checksum // x-amz-checksum-XXX checksum sent to PutObject/ CompleteMultipartUpload.

	NoDecryption                        bool      // indicates if the stream must be decrypted.
	PreserveETag                        string    // preserves this etag during a PUT call.

			IsGroup:     isGroup,
			Policy:      policyName,
		},
		UpdatedAt: updatedAt,
	}))
}

// ListPolicyMappingEntities - GET /minio/admin/v3/idp/builtin/polciy-entities?policy=xxx&user=xxx&group=xxx
func (a adminAPIHandlers) ListPolicyMappingEntities(w http.ResponseWriter, r *http.Request) {
	ctx := r.Context()

	// Check authorization.
	objectAPI, cred := validateAdminReq(ctx, w, r,

// These tokens are opaque to MinIO and are verified by a configured (external)
// Identity Management Plugin.
//
// API endpoint: https://minio:9000?Action=AssumeRoleWithCustomToken&Token=xxx
func (sts *stsAPIHandlers) AssumeRoleWithCustomToken(w http.ResponseWriter, r *http.Request) {
	ctx := newContext(r, w, "AssumeRoleWithCustomToken")

	claims := make(map[string]interface{})