}

func match(info *types.Info, arg ast.Expr, param *types.Var) bool {
	id, ok := arg.(*ast.Ident)
	return ok && info.ObjectOf(id) == param
}

// checkPrintfFwd checks that a printf-forwarding wrapper is forwarding correctly.
// It diagnoses writing fmt.Printf(format, args) instead of fmt.Printf(format, args...).
func checkPrintfFwd(pass *analysis.Pass, w *printfWrapper, call *ast.CallExpr, kind Kind, res *Result) {

TEXT runtime·sigtramp(SB),NOSPLIT|TOPFRAME,$16
	// Go relies on R0 being $0 and we may have been executing non-Go code.
	XOR	R0, R0

	// TODO(jsing): Save callee-save registers (R2, R14-R31, F14-F31).
	// in the case of signal forwarding.
	// Please refer to https://golang.org/issue/31827 .

	// If called from an external code context, g will not be set.
	BL	runtime·load_g(SB)

	BL	runtime·sigtrampgo<ABIInternal>(SB)

// func sigtramp(signo, ureg, ctxt unsafe.Pointer)
TEXT runtime·sigtramp(SB),NOSPLIT|TOPFRAME,$168
	MOVW	R4, (1*8)(R3)
	MOVV	R5, (2*8)(R3)
	MOVV	R6, (3*8)(R3)

	// Save callee-save registers in the case of signal forwarding.
	// Please refer to https://golang.org/issue/31827 .
	SAVE_R22_TO_R31((4*8))
	SAVE_F24_TO_F31((14*8))

	// this might be called in external code context,
	// where g is not set.
	MOVB	runtime·iscgo(SB), R4

	MOVD	info+16(FP), R1
	MOVD	ctx+24(FP), R2
	MOVD	fn+0(FP), R11
	BL	(R11)			// Alignment for ELF ABI?
	RET

TEXT runtime·sigtramp(SB),NOSPLIT|TOPFRAME,$192
	// Save callee-save registers in the case of signal forwarding.
	// Please refer to https://golang.org/issue/31827 .
	SAVE_R19_TO_R28(8*4)
	SAVE_F8_TO_F15(8*14)

	// If called from an external code context, g will not be set.
	// Save R0, since runtime·load_g will clobber it.

For example, consider a MinIO deployment behind a proxy `https://minio.example.net`, `https://console.minio.example.net` with rules for forwarding traffic on port :9000 and :9001 to MinIO and the MinIO Console respectively on the internal network. Set `MINIO_BROWSER_REDIRECT_URL` to `https://console.minio.example.net` to ensure the browser receives a valid reachable URL.

func GetClientIP(req *http.Request) net.IP {
	ips := SourceIPs(req)
	if len(ips) == 0 {
		return nil
	}
	return ips[0]
}

// Prepares the X-Forwarded-For header for another forwarding hop by appending the previous sender's
// IP address to the X-Forwarded-For chain.
func AppendForwardedForHeader(req *http.Request) {
	// Copied from net/http/httputil/reverseproxy.go:

DEFINE_PPC64X_FUNCDESC(runtime·cgoSigtramp, sigtramp<>)
TEXT sigtramp<>(SB),NOSPLIT|NOFRAME|TOPFRAME,$0
#else
// ppc64le doesn't need function descriptors
// Save callee-save registers in the case of signal forwarding.
// Same as on ARM64 https://golang.org/issue/31827 .
//
// Note, it is assumed this is always called indirectly (e.g via
// a function pointer) as R2 may not be preserved when calling this

# ContentType used by all components to communicate with apiserver.
TEST_CLUSTER_API_CONTENT_TYPE=${TEST_CLUSTER_API_CONTENT_TYPE:-}

# Enable debug handlers (port forwarding, exec, container logs, etc.).
KUBELET_ENABLE_DEBUGGING_HANDLERS=${KUBELET_ENABLE_DEBUGGING_HANDLERS:-true}
MASTER_KUBELET_ENABLE_DEBUGGING_HANDLERS=${MASTER_KUBELET_ENABLE_DEBUGGING_HANDLERS:-${KUBELET_ENABLE_DEBUGGING_HANDLERS}}

	MOVW	sig+8(FP), R0
	MOVD	info+16(FP), R1
	MOVD	ctx+24(FP), R2
	MOVD	fn+0(FP), R11
	BL	(R11)
	RET

TEXT runtime·sigtramp(SB),NOSPLIT|TOPFRAME,$176
	// Save callee-save registers in the case of signal forwarding.
	// Please refer to https://golang.org/issue/31827 .
	SAVE_R19_TO_R28(8*4)
	SAVE_F8_TO_F15(8*14)

	// Save arguments.
	MOVW	R0, (8*1)(RSP)	// sig
	MOVD	R1, (8*2)(RSP)	// info
	MOVD	R2, (8*3)(RSP)	// ctx

	MOVD	ctx+24(FP), R2
	MOVD	fn+0(FP), R11
	BL	(R11)
	RET

// Called from c-abi, R0: sig, R1: info, R2: cxt
TEXT runtime·sigtramp(SB),NOSPLIT|TOPFRAME,$176
	// Save callee-save registers in the case of signal forwarding.
	// Please refer to https://golang.org/issue/31827 .
	SAVE_R19_TO_R28(8*4)
	SAVE_F8_TO_F15(8*14)

	// this might be called in external code context,
	// where g is not set.