Adding upstream version 1.19.8.upstream/1.19.8upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 246 insertions, 0 deletions

diff --git a/test/zerodivide.go b/test/zerodivide.go
new file mode 100644
index 0000000..fd36d67
--- /dev/null
+++ b/test/zerodivide.go
@@ -0,0 +1,246 @@
+// 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")
+	}
+}