matches = append(matches, cmd)
		}
	}
	matches = append(matches, completeConfig(token)...)
	if len(matches) == 1 {
		return matches[0]
	}
	return ""
}

// functionCompleter replaces provided substring with a function
// name retrieved from a profile if a single match exists. Otherwise,
// it returns unchanged substring. It defaults to no-op if the profile
// is not specified.

// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

// Package symbolizer provides a routine to populate a profile with
// symbol, file and line number information. It relies on the
// addr2liner and demangle packages to do the actual work.
package symbolizer

import (
	"fmt"
	"io"
	"net/http"

}

// There is a copy of findGOROOT, isSameDir, and isGOROOT in
// x/tools/cmd/godoc/goroot.go.
// Try to keep them in sync for now.

// findGOROOT returns the GOROOT value, using either an explicitly
// provided environment variable, a GOROOT that contains the current
// os.Executable value, or else the GOROOT that the binary was built
// with from runtime.GOROOT().
//
// There is a copy of this code in x/tools/cmd/godoc/goroot.go.

// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE

// run

// Copyright 2021 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// Package list provides a doubly linked list of some element type
// (generic form of the "container/list" package).

package main

import (
	"fmt"
	"strconv"
)

// _Element is an element of a linked list.
type _Element[T any] struct {

// 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

#include "textflag.h"

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

// TODO: Consider re-implementing using Advanced SIMD
// once the assembler supports those instructions.

		}
	}
	newslice := Grow[S](nil, size)
	for _, s := range slices {
		newslice = append(newslice, s...)
	}
	return newslice
}

// Repeat returns a new slice that repeats the provided slice the given number of times.
// The result has length and capacity (len(x) * count).
// The result is never nil.
// Repeat panics if count is negative or if the result of (len(x) * count)
// overflows.

// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

// Package binutils provides access to the GNU binutils.
package binutils

import (
	"debug/elf"
	"debug/macho"
	"debug/pe"
	"encoding/binary"
	"errors"
	"fmt"
	"io"
	"os"
	"os/exec"
	"path/filepath"
	"regexp"

}

func TestIssue61938(t *testing.T) {
	const src = `
package p

func f[T any]() {}
func _()        { f() }
`
	// no error handler provided (this issue)
	var conf Config
	typecheck(src, &conf, nil) // must not panic

	// with error handler (sanity check)
	conf.Error = func(error) {}
	typecheck(src, &conf, nil) // must not panic
}

// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE