enabling the HTTP/2 use by the HTTP client broke programs
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

		})
	}

	if cwd, _ = Getenv("PWD"); cwd != "" {
		cwd = joinPath("/", cwd)
	} else if len(preopens) > 0 {
		cwd = preopens[0].name
	}
}

// Provided by package runtime.
func now() (sec int64, nsec int32)

//go:nosplit
func appendCleanPath(buf []byte, path string, lookupParent bool) ([]byte, bool) {
	i := 0
	for i < len(path) {

		if r.Mod.Path == path {
			r.Syntax.markRemoved()
			*r = Require{}
		}
	}
	return nil
}

// AddExclude adds a exclude statement to the mod file. Errors if the provided
// version is not a canonical version string
func (f *File) AddExclude(path, vers string) error {
	if err := checkCanonicalVersion(path, vers); err != nil {
		return err
	}

	var hint *Line

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build !math_big_pure_go && (ppc64 || ppc64le)

#include "textflag.h"

// This file provides fast assembly versions for the elementary
// arithmetic operations on vectors implemented in arith.go.

// func addVV(z, y, y []Word) (c Word)
// z[i] = x[i] + y[i] for all i, carrying
TEXT ·addVV(SB), NOSPLIT, $0

// license that can be found in the LICENSE file.

// Package mlkem768 implements the quantum-resistant key encapsulation method
// ML-KEM (formerly known as Kyber).
//
// Only the recommended ML-KEM-768 parameter set is provided.
//
// The version currently implemented is the one specified by [NIST FIPS 203 ipd],
// with the unintentional transposition of the matrix A reverted to match the

type SystemRootsError struct {
	Err error
}

func (se SystemRootsError) Error() string {
	msg := "x509: failed to load system roots and no roots provided"
	if se.Err != nil {
		return msg + "; " + se.Err.Error()
	}
	return msg
}

func (se SystemRootsError) Unwrap() error { return se.Err }

	v.Pos = pos
	return v
}

// LogStat writes a string key and int value as a warning in a
// tab-separated format easily handled by spreadsheets or awk.
// file names, lines, and function names are included to provide enough (?)
// context to allow item-by-item comparisons across runs.
// For example:
// awk 'BEGIN {FS="\t"} $3~/TIME/{sum+=$4} END{print "t(ns)=",sum}' t.log
func (f *Func) LogStat(key string, args ...interface{}) {

	if d > 1 {
		n = n + "s"
	}
	return fmt.Sprintf("Dropped %d %s (%s <= %s)", d, n, l, f)
}

// New builds a new report indexing the sample values interpreting the
// samples with the provided function.
func New(prof *profile.Profile, o *Options) *Report {
	format := func(v int64) string {
		if r := o.Ratio; r > 0 && r != 1 {
			fv := float64(v) * r
			v = int64(fv)
		}