[short] skip

env GO111MODULE=on
env GOSUMDB=off
env GOPROXY=direct

# Server responses should be truncated to some reasonable number of lines.
# (For now, exactly eight.)
! go list -m vcs-test.golang.org/auth/ormanylines@latest
stderr '\tserver response:\n(.|\n)*\tline 8\n\t\[Truncated: too many lines.\]$'

# Server responses should be truncated to some reasonable number of characters.
! go list -m vcs-test.golang.org/auth/oronelongline@latest

# Plugins are not supported on all platforms.
[!buildmode:plugin] skip

go build -n testdep
! go build -buildmode=plugin testdep
stderr '-buildmode=plugin requires exactly one main package'

-- go.mod --
module testdep

go 1.16
-- testdep.go --

! go build -buildmode=exe -o out$GOEXE ./not_main
stderr '-buildmode=exe requires exactly one main package'
! exists out$GOEXE
! go build -buildmode=exe -o out$GOEXE ./main_one ./main_two
stderr '-buildmode=exe requires exactly one main package'
! exists out$GOEXE

-- go.mod --
module m

go 1.16
-- not_main/not_main.go --
package not_main

func F() {}

stderr '^missing go.sum entry needed to verify package example.com/ambiguous/a/b is provided by exactly one module; to add:\n\tgo mod download example.com/ambiguous/a/b$'
! go list -deps .
stderr '^use.go:3:8: missing go.sum entry needed to verify package example.com/ambiguous/a/b \(imported by m\) is provided by exactly one module; to add:\n\tgo get m$'

cp go.sum.b-only go.sum
! go list example.com/ambiguous/a/b

	cmd := testenv.Command(t, gotool, "build", "-o", dest, filepath.Join("testdata", filename))
	if output, err = cmd.CombinedOutput(); err != nil {
		t.Fatalf("Failed: %v:\nOutput: %s\n", err, output)
	}

	// Test that there is exactly one shape-based instantiation of Sort in
	// the executable.
	cmd = testenv.Command(t, gotool, "tool", "nm", dest)
	if output, err = cmd.CombinedOutput(); err != nil {
		t.Fatalf("Failed: %v:\nOut: %s\n", err, output)
	}

// This is a sample test file illustrating the use
// of error comments with the error test harness.

package p

// The following are invalid error comments; they are
// silently ignored. The prefix must be exactly one of
// "/* ERROR " or "// ERROR ".
//
/*ERROR*/
/*ERROR foo*/
/* ERRORfoo */
/*  ERROR foo */
//ERROR
// ERROR
// ERRORfoo
//  ERROR foo

// This is a valid error comment; it applies to the

//
//go:noinline
func ExerciseIface(iter int, a1, a2 Adder, m1, m2 mult.Multiplier) int {
	// The call below must evaluate selectA() to determine the receiver to
	// use. This should happen exactly once per iteration. Assert that is
	// the case to ensure the IR manipulation does not result in over- or
	// under-evaluation.
	selectI := 0
	selectA := func(gotI int) Adder {
		if gotI != selectI {

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

// Test case for go.dev/issue/23434: Better synchronization of
// parser after missing type. There should be exactly
// one error each time, with now follow errors.

package p

type T /* ERROR unexpected newline */

type Map map[int] /* ERROR unexpected newline */

// Examples from go.dev/issue/23434:

func g() {

env GOROOT=$WORK/goroot2
symlink $GOROOT -> $TESTGO_GOROOT

env GOCACHE=$WORK/gocache2
mkdir $GOCACHE

go build -o binary2 -trimpath -x main.go

# Check that the binaries match exactly
go tool buildid binary1
cp stdout buildid1
go tool buildid binary2
cp stdout buildid2
cmp buildid1 buildid2


-- main.go --
package main

env GOTOOLCHAIN=auto
cp go.mod.new go.mod
go get go@1.22
stderr '^go: updating go.mod requires go >= 1.22.9; switching to go1.22.9$'

# go get go@1.22rc1 should use 1.22rc1 exactly, not a later release.
env GOTOOLCHAIN=local
cp go.mod.new go.mod
! go get go@1.22rc1
stderr '^go: updating go.mod requires go >= 1.22rc1 \(running go 1.21; GOTOOLCHAIN=local\)'

env GOTOOLCHAIN=auto