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📁 ..
📄 235.go(1.56 KB)
📄 64bit.go(24.83 KB)
📄 README.md(696 B)
📁 abi
📄 alg.go(822 B)
📄 alias.go(588 B)
📄 alias1.go(803 B)
📄 alias2.go(2.8 KB)
📁 alias3.dir
📄 alias3.go(187 B)
📄 align.go(603 B)
📄 append.go(9.09 KB)
📄 append1.go(883 B)
📄 args.go(374 B)
📄 armimm.go(3.85 KB)
📁 asmhdr.dir
📄 asmhdr.go(237 B)
📄 assign.go(1.01 KB)
📄 assign1.go(5.55 KB)
📄 atomicload.go(798 B)
📁 bench
📄 bigalg.go(2.12 KB)
📄 bigmap.go(2.46 KB)
📄 blank.go(2.1 KB)
📄 blank1.go(724 B)
📄 bom.go(406 B)
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📄 bounds.go(6.09 KB)
📄 cannotassign.go(1.04 KB)
📁 chan
📄 chancap.go(1.57 KB)
📄 chanlinear.go(2.12 KB)
📄 char_lit.go(657 B)
📄 char_lit1.go(822 B)
📄 checkbce.go(3.56 KB)
📄 clearfat.go(1.15 KB)
📄 closedchan.go(5.79 KB)
📄 closure.go(1.69 KB)
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📁 closure3.dir
📄 closure3.go(321 B)
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📁 closure5.dir
📄 closure5.go(280 B)
📄 closure6.go(346 B)
📄 closure7.go(373 B)
📄 cmp.go(7.63 KB)
📄 cmp6.go(2.16 KB)
📄 cmplx.go(1.39 KB)
📄 cmplxdivide.c(2.05 KB)
📄 cmplxdivide.go(868 B)
📄 cmplxdivide1.go(240.68 KB)
📁 codegen
📄 complit.go(1.71 KB)
📄 complit1.go(1.63 KB)
📄 compos.go(403 B)
📄 const.go(4.78 KB)
📄 const1.go(3.79 KB)
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📄 const3.go(659 B)
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📄 const5.go(835 B)
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📄 const7.go(1.72 KB)
📄 const8.go(727 B)
📄 convT2X.go(3.33 KB)
📄 convert.go(833 B)
📄 convert1.go(3.41 KB)
📄 convert2.go(5.92 KB)
📄 convert3.go(544 B)
📄 convert4.go(1.63 KB)
📄 convlit.go(2.39 KB)
📄 convlit1.go(458 B)
📄 copy.go(6.6 KB)
📄 copy1.go(851 B)
📄 crlf.go(782 B)
📄 ddd.go(4.23 KB)
📄 ddd1.go(1.7 KB)
📁 ddd2.dir
📄 ddd2.go(252 B)
📄 decl.go(926 B)
📄 declbad.go(1.43 KB)
📄 defer.go(875 B)
📄 defererrcheck.go(1.4 KB)
📄 deferfin.go(1.05 KB)
📄 defernil.go(563 B)
📄 deferprint.go(586 B)
📄 deferprint.out(126 B)
📄 devirt.go(574 B)
📄 directive.go(1.33 KB)
📄 directive2.go(1.21 KB)
📄 divide.go(1.22 KB)
📄 divmod.go(9.28 KB)
📁 dwarf
📄 embedfunc.go(308 B)
📄 embedvers.go(292 B)
📄 empty.go(316 B)
📄 env.go(585 B)
📄 eof.go(308 B)
📄 eof1.go(333 B)
📄 escape.go(3.79 KB)
📄 escape2.go(35.07 KB)
📄 escape2n.go(35.1 KB)
📄 escape3.go(524 B)
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📄 escape_array.go(3.64 KB)
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📄 escape_level.go(1.79 KB)
📄 escape_map.go(2.76 KB)
📄 escape_param.go(8.9 KB)
📄 escape_runtime_atomic.go(874 B)
📄 escape_selfassign.go(538 B)
📄 escape_slice.go(3.79 KB)
📄 escape_struct_param1.go(8.9 KB)
📄 escape_struct_param2.go(8.94 KB)
📄 escape_struct_return.go(1.04 KB)
📄 escape_sync_atomic.go(943 B)
📄 escape_unsafe.go(2.16 KB)
📄 fibo.go(6.28 KB)
📄 finprofiled.go(1.95 KB)
📁 fixedbugs
📄 float_lit.go(3.95 KB)
📄 float_lit2.go(7.88 KB)
📄 float_lit3.go(1.72 KB)
📄 floatcmp.go(3.03 KB)
📄 for.go(844 B)
📄 func.go(1.29 KB)
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📄 gcgort.go(34.54 KB)
📄 gcstring.go(872 B)
📄 goprint.go(722 B)
📄 goprint.out(65 B)
📄 goto.go(8.39 KB)
📄 heapsampling.go(9.67 KB)
📄 helloworld.go(269 B)
📄 helloworld.out(13 B)
📄 if.go(1.36 KB)
📄 import.go(425 B)
📄 import1.go(621 B)
📁 import2.dir
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📁 import4.dir
📄 import4.go(310 B)
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📄 index.go(6.42 KB)
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📄 indirect.go(1.39 KB)
📄 indirect1.go(1.53 KB)
📄 init.go(479 B)
📄 init1.go(1.08 KB)
📄 initcomma.go(1.22 KB)
📄 initempty.go(604 B)
📄 initexp.go(1.74 KB)
📄 initialize.go(1.24 KB)
📄 initializerr.go(1.15 KB)
📄 initloop.go(407 B)
📄 inline.go(10.49 KB)
📄 inline_big.go(12.67 KB)
📄 inline_caller.go(1.36 KB)
📄 inline_callers.go(1.87 KB)
📄 inline_endian.go(849 B)
📄 inline_literal.go(1.02 KB)
📄 inline_math_bits_rotate.go(569 B)
📄 inline_sync.go(1.52 KB)
📄 inline_variadic.go(513 B)
📄 int_lit.go(387 B)
📄 intcvt.go(4.26 KB)
📁 interface
📁 intrinsic.dir
📄 intrinsic.go(259 B)
📄 intrinsic_atomic.go(807 B)
📄 iota.go(1.59 KB)
📁 ken
📄 label.go(1.02 KB)
📄 label1.go(2.08 KB)
📄 linkmain.go(236 B)
📄 linkmain_run.go(1.75 KB)
📁 linkname.dir
📄 linkname.go(456 B)
📄 linkname3.go(597 B)
📄 linkobj.go(3.2 KB)
📄 linkx.go(741 B)
📄 linkx_run.go(1.65 KB)
📄 literal.go(4.99 KB)
📄 literal2.go(2.22 KB)
📄 live.go(18.06 KB)
📄 live1.go(1.29 KB)
📄 live2.go(963 B)
📄 live_regabi.go(17.84 KB)
📄 live_uintptrkeepalive.go(2.03 KB)
📄 loopbce.go(12.03 KB)
📄 mainsig.go(598 B)
📄 makechan.go(1.04 KB)
📄 makemap.go(1.3 KB)
📄 makenew.go(605 B)
📄 makeslice.go(5.49 KB)
📄 mallocfin.go(1.18 KB)
📄 map.go(14.91 KB)
📄 map1.go(1.47 KB)
📄 mapclear.go(1.49 KB)
📄 maplinear.go(3.62 KB)
📄 maymorestack.go(1.05 KB)
📄 mergemul.go(3.16 KB)
📄 method.go(5.24 KB)
📄 method1.go(727 B)
📄 method2.go(1.21 KB)
📄 method3.go(570 B)
📁 method4.dir
📄 method4.go(230 B)
📄 method5.go(6.73 KB)
📄 method6.go(467 B)
📄 method7.go(1.15 KB)
📄 named.go(4.61 KB)
📄 named1.go(984 B)
📄 nil.go(2.23 KB)
📄 nilcheck.go(3.62 KB)
📄 nilptr.go(3.15 KB)
📄 nilptr2.go(3.6 KB)
📄 nilptr3.go(5.39 KB)
📄 nilptr4.go(428 B)
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📄 nilptr5_aix.go(805 B)
📄 nilptr5_wasm.go(812 B)
📄 nilptr_aix.go(3.09 KB)
📄 nosplit.go(11.48 KB)
📄 notinheap.go(1.29 KB)
📄 notinheap2.go(1.78 KB)
📄 notinheap3.go(1.24 KB)
📄 nowritebarrier.go(1.21 KB)
📄 nul1.go(1.23 KB)
📄 opt_branchlikely.go(2.08 KB)
📄 parentype.go(424 B)
📄 peano.go(2.22 KB)
📄 phiopt.go(2.02 KB)
📄 print.go(1.56 KB)
📄 print.out(247 B)
📄 printbig.go(315 B)
📄 printbig.out(41 B)
📄 prove.go(19.89 KB)
📄 prove_constant_folding.go(602 B)
📄 range.go(8.14 KB)
📄 recover.go(10.64 KB)
📄 recover1.go(2.5 KB)
📄 recover2.go(1.22 KB)
📄 recover3.go(1.64 KB)
📄 recover4.go(2.2 KB)
📄 recover5.go(408 B)
📄 reflectmethod1.go(578 B)
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📄 reflectmethod8.go(479 B)
📄 rename.go(1.52 KB)
📄 rename1.go(1.13 KB)
📄 reorder.go(2.28 KB)
📄 reorder2.go(7.22 KB)
📁 retjmp.dir
📄 retjmp.go(252 B)
📄 return.go(32.69 KB)
📄 rotate.go(3.27 KB)
📄 rotate0.go(286 B)
📄 rotate1.go(286 B)
📄 rotate2.go(286 B)
📄 rotate3.go(286 B)
📄 run.go(58.47 KB)
📄 rune.go(603 B)
📁 runtime
📄 runtime.go(600 B)
📄 shift1.go(9.43 KB)
📄 shift2.go(1.31 KB)
📄 shift3.go(834 B)
📄 sieve.go(1 KB)
📄 sigchld.go(365 B)
📄 sigchld.out(17 B)
📄 simassign.go(1.12 KB)
📄 sinit.go(5.75 KB)
📄 sinit_run.go(868 B)
📄 sizeof.go(2.95 KB)
📄 slice3.go(2.92 KB)
📄 slice3err.go(5.19 KB)
📄 slicecap.go(1.85 KB)
📄 sliceopt.go(735 B)
📄 solitaire.go(2.9 KB)
📄 stack.go(1.69 KB)
📄 stackobj.go(975 B)
📄 stackobj2.go(1.55 KB)
📄 stackobj3.go(1.42 KB)
📄 strcopy.go(674 B)
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📁 stress
📄 string_lit.go(3.58 KB)
📄 stringrange.go(1.45 KB)
📄 struct0.go(565 B)
📄 switch.go(6.1 KB)
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📁 syntax
📄 tinyfin.go(1.57 KB)
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📄 typecheckloop.go(526 B)
📁 typeparam
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📄 typeswitch2b.go(598 B)
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📁 uintptrescapes.dir
📄 uintptrescapes.go(250 B)
📄 uintptrescapes2.go(2.16 KB)
📄 uintptrescapes3.go(1.28 KB)
📄 uintptrkeepalive.go(297 B)
📄 undef.go(758 B)
📄 unsafebuiltins.go(1.46 KB)
📄 used.go(5.96 KB)
📄 utf.go(1.19 KB)
📄 varerr.go(449 B)
📄 varinit.go(509 B)
📄 winbatch.go(1.97 KB)
📄 writebarrier.go(5.88 KB)
📄 zerodivide.go(5.71 KB)

Editing: zerodivide.go

// run

// Copyright 2010 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.

// Test that zero division causes a panic.

package main

import (
	"fmt"
	"math"
	"runtime"
	"strings"
)

type ErrorTest struct {
	name string
	fn   func()
	err  string
}

var (
	i, j, k       int   = 0, 0, 1
	i8, j8, k8    int8  = 0, 0, 1
	i16, j16, k16 int16 = 0, 0, 1
	i32, j32, k32 int32 = 0, 0, 1
	i64, j64, k64 int64 = 0, 0, 1

bb = []int16{2, 0}

u, v, w       uint    = 0, 0, 1
	u8, v8, w8    uint8   = 0, 0, 1
	u16, v16, w16 uint16  = 0, 0, 1
	u32, v32, w32 uint32  = 0, 0, 1
	u64, v64, w64 uint64  = 0, 0, 1
	up, vp, wp    uintptr = 0, 0, 1

f, g, h                         float64 = 0, 0, 1
	f32, g32, h32                   float32 = 0, 0, 1
	f64, g64, h64, inf, negInf, nan float64 = 0, 0, 1, math.Inf(1), math.Inf(-1), math.NaN()

c, d, e          complex128 = 0 + 0i, 0 + 0i, 1 + 1i
	c64, d64, e64    complex64  = 0 + 0i, 0 + 0i, 1 + 1i
	c128, d128, e128 complex128 = 0 + 0i, 0 + 0i, 1 + 1i
)

// Fool gccgo into thinking that these variables can change.
func NotCalled() {
	i++
	j++
	k++
	i8++
	j8++
	k8++
	i16++
	j16++
	k16++
	i32++
	j32++
	k32++
	i64++
	j64++
	k64++

u++
	v++
	w++
	u8++
	v8++
	w8++
	u16++
	v16++
	w16++
	u32++
	v32++
	w32++
	u64++
	v64++
	w64++
	up++
	vp++
	wp++

f += 1
	g += 1
	h += 1
	f32 += 1
	g32 += 1
	h32 += 1
	f64 += 1
	g64 += 1
	h64 += 1

c += 1 + 1i
	d += 1 + 1i
	e += 1 + 1i
	c64 += 1 + 1i
	d64 += 1 + 1i
	e64 += 1 + 1i
	c128 += 1 + 1i
	d128 += 1 + 1i
	e128 += 1 + 1i
}

var tmp interface{}

// We could assign to _ but the compiler optimizes it too easily.
func use(v interface{}) {
	tmp = v
}

// Verify error/no error for all types.
var errorTests = []ErrorTest{
	// All integer divide by zero should error.
	ErrorTest{"int 0/0", func() { use(i / j) }, "divide"},
	ErrorTest{"int8 0/0", func() { use(i8 / j8) }, "divide"},
	ErrorTest{"int16 0/0", func() { use(i16 / j16) }, "divide"},
	ErrorTest{"int32 0/0", func() { use(i32 / j32) }, "divide"},
	ErrorTest{"int64 0/0", func() { use(i64 / j64) }, "divide"},

ErrorTest{"int 1/0", func() { use(k / j) }, "divide"},
	ErrorTest{"int8 1/0", func() { use(k8 / j8) }, "divide"},
	ErrorTest{"int16 1/0", func() { use(k16 / j16) }, "divide"},
	ErrorTest{"int32 1/0", func() { use(k32 / j32) }, "divide"},
	ErrorTest{"int64 1/0", func() { use(k64 / j64) }, "divide"},

// From issue 5790, we should ensure that _ assignments
	// still evaluate and generate zerodivide panics.
	ErrorTest{"int16 _ = bb[0]/bb[1]", func() { _ = bb[0] / bb[1] }, "divide"},

ErrorTest{"uint 0/0", func() { use(u / v) }, "divide"},
	ErrorTest{"uint8 0/0", func() { use(u8 / v8) }, "divide"},
	ErrorTest{"uint16 0/0", func() { use(u16 / v16) }, "divide"},
	ErrorTest{"uint32 0/0", func() { use(u32 / v32) }, "divide"},
	ErrorTest{"uint64 0/0", func() { use(u64 / v64) }, "divide"},
	ErrorTest{"uintptr 0/0", func() { use(up / vp) }, "divide"},

ErrorTest{"uint 1/0", func() { use(w / v) }, "divide"},
	ErrorTest{"uint8 1/0", func() { use(w8 / v8) }, "divide"},
	ErrorTest{"uint16 1/0", func() { use(w16 / v16) }, "divide"},
	ErrorTest{"uint32 1/0", func() { use(w32 / v32) }, "divide"},
	ErrorTest{"uint64 1/0", func() { use(w64 / v64) }, "divide"},
	ErrorTest{"uintptr 1/0", func() { use(wp / vp) }, "divide"},

// All float64ing divide by zero should not error.
	ErrorTest{"float64 0/0", func() { use(f / g) }, ""},
	ErrorTest{"float32 0/0", func() { use(f32 / g32) }, ""},
	ErrorTest{"float64 0/0", func() { use(f64 / g64) }, ""},

ErrorTest{"float64 1/0", func() { use(h / g) }, ""},
	ErrorTest{"float32 1/0", func() { use(h32 / g32) }, ""},
	ErrorTest{"float64 1/0", func() { use(h64 / g64) }, ""},
	ErrorTest{"float64 inf/0", func() { use(inf / g64) }, ""},
	ErrorTest{"float64 -inf/0", func() { use(negInf / g64) }, ""},
	ErrorTest{"float64 nan/0", func() { use(nan / g64) }, ""},

// All complex divide by zero should not error.
	ErrorTest{"complex 0/0", func() { use(c / d) }, ""},
	ErrorTest{"complex64 0/0", func() { use(c64 / d64) }, ""},
	ErrorTest{"complex128 0/0", func() { use(c128 / d128) }, ""},

ErrorTest{"complex 1/0", func() { use(e / d) }, ""},
	ErrorTest{"complex64 1/0", func() { use(e64 / d64) }, ""},
	ErrorTest{"complex128 1/0", func() { use(e128 / d128) }, ""},
}

func error_(fn func()) (error string) {
	defer func() {
		if e := recover(); e != nil {
			error = e.(runtime.Error).Error()
		}
	}()
	fn()
	return ""
}

type FloatTest struct {
	f, g float64
	out  float64
}

var float64Tests = []FloatTest{
	FloatTest{0, 0, nan},
	FloatTest{nan, 0, nan},
	FloatTest{inf, 0, inf},
	FloatTest{negInf, 0, negInf},
}

func alike(a, b float64) bool {
	switch {
	case math.IsNaN(a) && math.IsNaN(b):
		return true
	case a == b:
		return math.Signbit(a) == math.Signbit(b)
	}
	return false
}

func main() {
	bad := false
	for _, t := range errorTests {
		err := error_(t.fn)
		switch {
		case t.err == "" && err == "":
			// fine
		case t.err != "" && err == "":
			if !bad {
				bad = true
				fmt.Printf("BUG\n")
			}
			fmt.Printf("%s: expected %q; got no error\n", t.name, t.err)
		case t.err == "" && err != "":
			if !bad {
				bad = true
				fmt.Printf("BUG\n")
			}
			fmt.Printf("%s: expected no error; got %q\n", t.name, err)
		case t.err != "" && err != "":
			if !strings.Contains(err, t.err) {
				if !bad {
					bad = true
					fmt.Printf("BUG\n")
				}
				fmt.Printf("%s: expected %q; got %q\n", t.name, t.err, err)
				continue
			}
		}
	}

// At this point we know we don't error on the values we're testing
	for _, t := range float64Tests {
		x := t.f / t.g
		if !alike(x, t.out) {
			if !bad {
				bad = true
				fmt.Printf("BUG\n")
			}
			fmt.Printf("%v/%v: expected %g error; got %g\n", t.f, t.g, t.out, x)
		}
	}
	if bad {
		panic("zerodivide")
	}
}

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Editing: zerodivide.go

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