mirror of https://github.com/golang/go.git
122 lines
3.0 KiB
Go
122 lines
3.0 KiB
Go
// Copyright 2021 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package runtime_test
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import (
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"bytes"
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"runtime"
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"testing"
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)
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var testTracebackArgsBuf [1000]byte
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func TestTracebackArgs(t *testing.T) {
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tests := []struct {
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fn func() int
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expect string
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}{
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// simple ints
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{
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func() int { return testTracebackArgs1(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12) },
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"testTracebackArgs1(0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xa, ...)",
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},
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// some aggregates
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{
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func() int {
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return testTracebackArgs2(false, struct {
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a, b, c int
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x [2]int
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}{1, 2, 3, [2]int{4, 5}}, [0]int{}, [3]byte{6, 7, 8})
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},
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"testTracebackArgs2(0x0, {0x1, 0x2, 0x3, {0x4, 0x5}}, {}, {0x6, 0x7, 0x8})",
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},
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{
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func() int { return testTracebackArgs3([3]byte{1, 2, 3}, 4, 5, 6, [3]byte{7, 8, 9}) },
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"testTracebackArgs3({0x1, 0x2, 0x3}, 0x4, 0x5, 0x6, {0x7, 0x8, 0x9})",
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},
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// too deeply nested type
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{
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func() int { return testTracebackArgs4(false, [1][1][1][1][1][1][1][1][1][1]int{}) },
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"testTracebackArgs4(0x0, {{{{{...}}}}})",
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},
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// a lot of zero-sized type
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{
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func() int {
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z := [0]int{}
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return testTracebackArgs5(false, struct {
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x int
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y [0]int
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z [2][0]int
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}{1, z, [2][0]int{}}, z, z, z, z, z, z, z, z, z, z, z, z)
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},
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"testTracebackArgs5(0x0, {0x1, {}, {{}, {}}}, {}, {}, {}, {}, {}, ...)",
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},
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}
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for _, test := range tests {
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n := test.fn()
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got := testTracebackArgsBuf[:n]
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if !bytes.Contains(got, []byte(test.expect)) {
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t.Errorf("traceback does not contain expected string: want %q, got\n%s", test.expect, got)
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}
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}
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}
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//go:noinline
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func testTracebackArgs1(a, b, c, d, e, f, g, h, i, j, k, l int) int {
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n := runtime.Stack(testTracebackArgsBuf[:], false)
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if a < 0 {
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// use in-reg args to keep them alive
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return a + b + c + d + e + f + g + h + i + j + k + l
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}
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return n
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}
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//go:noinline
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func testTracebackArgs2(a bool, b struct {
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a, b, c int
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x [2]int
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}, _ [0]int, d [3]byte) int {
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n := runtime.Stack(testTracebackArgsBuf[:], false)
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if a {
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// use in-reg args to keep them alive
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return b.a + b.b + b.c + b.x[0] + b.x[1] + int(d[0]) + int(d[1]) + int(d[2])
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}
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return n
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}
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//go:noinline
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//go:registerparams
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func testTracebackArgs3(x [3]byte, a, b, c int, y [3]byte) int {
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n := runtime.Stack(testTracebackArgsBuf[:], false)
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if a < 0 {
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// use in-reg args to keep them alive
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return int(x[0]) + int(x[1]) + int(x[2]) + a + b + c + int(y[0]) + int(y[1]) + int(y[2])
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}
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return n
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}
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//go:noinline
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func testTracebackArgs4(a bool, x [1][1][1][1][1][1][1][1][1][1]int) int {
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n := runtime.Stack(testTracebackArgsBuf[:], false)
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if a {
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panic(x) // use args to keep them alive
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}
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return n
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}
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//go:noinline
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func testTracebackArgs5(a bool, x struct {
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x int
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y [0]int
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z [2][0]int
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}, _, _, _, _, _, _, _, _, _, _, _, _ [0]int) int {
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n := runtime.Stack(testTracebackArgsBuf[:], false)
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if a {
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panic(x) // use args to keep them alive
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}
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return n
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}
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