/*
Cgo enables the creation of Go packages that call C code.

# Using cgo with the go command

To use cgo write normal Go code that imports a pseudo-package "C".
The Go code can then refer to types such as C.size_t, variables such
as C.stdout, or functions such as C.putchar.

If the import of "C" is immediately preceded by a comment, that
comment, called the preamble, is used as a header when compiling
the C parts of the package. For example:

		if c == r {
			return i
		}
	}
	// invalid: missing return statement
}
</pre>

<p>
A function declaration may omit the body. Such a declaration provides the
signature for a function implemented outside Go, such as an assembly routine.
</p>

<pre>
func min(x int, y int) int {
	if x &lt; y {
		return x
	}
	return y
}

# consult https://www.iana.org/time-zones for the latest versions,
# update CODE and DATA below, and then run
#
#	./update.bash -commit
#
# That will prepare the files and create the commit.
#
# To review such a commit (as the reviewer), use:
#
#	git codereview change NNNNNN   # CL number
#	cd lib/time
#	./update.bash
#
# If it prints "No updates needed.", then the generated files
# in the CL match the update.bash in the CL.

	TypeXHeader = 'x'

	// Type 'g' is used by the PAX format to store key-value records that
	// are relevant to all subsequent files.
	// This package only supports parsing and composing such headers,
	// but does not currently support persisting the global state across files.
	TypeXGlobalHeader = 'g'

	// Type 'S' indicates a sparse file in the GNU format.
	TypeGNUSparse = 'S'

connecting to servers with buggy HTTP/2 implementations.
These kinds of changes are unavoidable and
[permitted by the Go 1 compatibility rules](/doc/go1compat).
Even so, Go provides a mechanism called GODEBUG to
reduce the impact such changes have on Go developers
using newer toolchains to compile old code.

A GODEBUG setting is a `key=value` pair
that controls the execution of certain parts of a Go program.
The environment variable `GODEBUG`

	NORCC R3, R4, R5                // 7c8518f9

	SUB R3, R4                      // 7c832050
	SUB R3, R4, R5                  // 7ca32050
	SUBC R3, R4                     // 7c832010
	SUBC R3, R4, R5                 // 7ca32010
	SUBCC R3, R4, R5                // 7ca32051
	SUBVCC R3, R4, R5               // 7ca32451
	SUBCCC R3, R4, R5               // 7ca32011
	SUBCV R3, R4, R5                // 7ca32410

A visible effect of this change is that `len` and `cap` of timer channels
now returns 0 instead of 1, which may affect programs that
poll the length to decide whether a receive on the timer channel
will succeed.
Such code should use a non-blocking receive instead.

These new behaviors are only enabled when the main Go program
is in a module with a `go.mod` `go` line using Go 1.23.0 or later.

// len(src) and len(dst).
func copy(dst, src []Type) int

// The delete built-in function deletes the element with the specified key
// (m[key]) from the map. If m is nil or there is no such element, delete
// is a no-op.
func delete(m map[Type]Type1, key Type)

// The len built-in function returns the length of v, according to its type:
//
//	Array: the number of elements in v.

	if x < y {
		return x
	}
	return y
}
</pre>

<p>
A function declaration without type parameters may omit the body.
Such a declaration provides the signature for a function implemented outside Go,
such as an assembly routine.
</p>

<pre>
func flushICache(begin, end uintptr)  // implemented externally
</pre>

<h3 id="Method_declarations">Method declarations</h3>

		}
		p.registerList(a)
		p.expectOperandEnd()
		return
	}

	// Register: R1
	if tok.ScanToken == scanner.Ident && p.atStartOfRegister(name) {
		if p.atRegisterShift() {
			// ARM shifted register such as R1<<R2 or R1>>2.
			a.Type = obj.TYPE_SHIFT
			a.Offset = p.registerShift(tok.String(), prefix)
			if p.peek() == '(' {
				// Can only be a literal register here.
				p.next()
				tok := p.next()