}

	// Verify the amount of space allocated for the elf header is sufficient.  The file offsets are
	// already computed in layout, so we could spill into another section.
	if a > int64(HEADR) {
		Errorf(nil, "HEADR too small: %d > %d with %d text sections", a, HEADR, numtext)
	}
}

(MOVLi2f <t> (Arg <u> [off] {sym})) && t.Size() == u.Size() => @b.Func.Entry (Arg <t> [off] {sym})

// LEAQ is rematerializeable, so this helps to avoid register spill.
// See issue 22947 for details
(ADD(Q|L)const [off] x:(SP)) => (LEA(Q|L) [off] x)

// HMULx is commutative, but its first argument must go in AX.

(SelectN [0] call:(StaticLECall {sym} x)) && needRaceCleanup(sym, call) && clobber(call) => x

// When rewriting append to growslice, we use as the new length the result of
// growslice so that we don't have to spill/restore the new length around the growslice call.
// The exception here is that if the new length is a constant, avoiding spilling it
// is pointless and its constantness is sometimes useful for subsequent optimizations.

 - Another.

Even more text.
 - List immediately after.

 - Blank line between items.

Yet more text.

 - Another list after blank line.

 - Blank line between items.

Still more text.
 - One list item.

   Multiple paragraphs.
-- dump --
Doc
	Paragraph
		Plain "Text."
	List ForceBlankBefore=false ForceBlankBetween=false
		Item Number=""
			Paragraph

        when:
        output.println("1st line")
        output.text("2nd line")
        output.text(" - still 2nd line")
        output.println()
        output.text("3rd line")

        then:
        result.toString() == TextUtil.toPlatformLineSeparators("""[PREFIX]1st line
[PREFIX]2nd line - still 2nd line
[PREFIX]3rd line""")
    }

    def "allows not prefixing first line"() {

	defer a.Free()

	const iValue = 10

	i := arena.New[int](a)
	*i = iValue

	if *i != iValue {
		// This test doesn't reasonably expect this to fail. It's more likely
		// that *i crashes for some reason. Still, why not check it.
		log.Fatalf("bad i value: got %d, want %d", *i, iValue)
	}

	const wantLen = 125
	const wantCap = 1912

	sl := arena.MakeSlice[*int](a, wantLen, wantCap)
	if len(sl) != wantLen {

package main

import "fmt"

type i5f5 struct {
	a, b          int16
	c, d, e       int32
	r, s, t, u, v float32
}

//go:noinline
func spills(_ *float32) {

}

//go:registerparams
//go:noinline
func F(x i5f5) i5f5 {
	y := x.v
	spills(&y)
	x.r = y
	return x
}

func main() {
	x := i5f5{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}
	y := x
	z := F(x)

```Python hl_lines="1  7-12  19-20"
{!../../../docs_src/dataclasses/tutorial001.py!}
```

This is still supported thanks to **Pydantic**, as it has <a href="https://docs.pydantic.dev/latest/concepts/dataclasses/#use-of-stdlib-dataclasses-with-basemodel" class="external-link" target="_blank">internal support for `dataclasses`</a>.

mkdir $GOCACHE

# Building a trivial non-main package should run compiler the first time.
go build -x -gcflags=-m lib.go
stderr 'compile( |\.exe"?)'
stderr 'lib.go:2.* can inline f'

# ... but not the second, even though it still prints the compiler output.
go build -x -gcflags=-m lib.go
! stderr 'compile( |\.exe"?)'
stderr 'lib.go:2.* can inline f'

# Building a trivial main package should run the compiler and linker the first time.

# cmd/doc should use GOROOT to locate the 'go' command,
# not use whatever is in $PATH.

# Remove 'go' from $PATH. (It can still be located via $GOROOT/bin/go, and the
# test script's built-in 'go' command still knows where to find it.)
env PATH=''
[GOOS:plan9] env path=''

go doc p.X

-- go.mod --
module example

go 1.19

require example.com/p v0.1.0

replace example.com/p => ./pfork
-- example.go --
package example