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

// Check that calling a nil func causes a proper panic.

package main

func main() {
	defer func() {
		err := recover()
		if err == nil {
			panic("panic expected")
		}
	}()

	var f func()
	f()

}

func a[T any]() {
	data := `{"t1":"1","t2":2,"t3":{"t4":4}}`
	a1 := A[T]{}
	if err := json.Unmarshal([]byte(data), &a1); err != nil {
		panic(err)
	}
	if bytes, err := json.Marshal(&a1); err != nil {
		panic(err)
	} else if string(bytes) != data {
		panic(string(bytes))
	}
}

func main() {
	a[int]()

	return a[0] // this seems to do the wrong thing
}

func main() {
	a := &[]int{12}
	if x := (*a)[0]; x != 12 {
		panic(2)
	}
	if x := foo(*a); x != 12 {
		// fails (x is incorrect)
		panic(3)
	}
}

/*
uetli:~/Source/go1/test/bugs gri$ 6go bug119
3 70160

panic on line 83 PC=0x14d6
0x14d6?zi
	main·main(23659, 0, 1, ...)
	main·main(0x5c6b, 0x1, 0x7fff5fbff830, ...)
0x52bb?zi

	GOPATH, err := os.MkdirTemp("", "cgolife")
	if err != nil {
		log.Panic(err)
	}
	defer os.RemoveAll(GOPATH)
	os.Setenv("GOPATH", GOPATH)

	// Copy testdata into GOPATH/src/cgolife, along with a go.mod file
	// declaring the same path.
	modRoot := filepath.Join(GOPATH, "src", "cgolife")
	if err := cgotest.OverlayDir(modRoot, "testdata"); err != nil {
		log.Panic(err)
	}
	if err := os.Chdir(modRoot); err != nil {
		log.Panic(err)

	n := 0
	inc := func() struct{} {
		n++
		return struct{}{}
	}
	h(inc, inc)
	if n != 2 {
		panic("inc not called")
	}
	hi(inc, inc)
	if n != 4 {
		panic("inc not called")
	}
}

func shouldPanic(x func()) {
	defer func() {
		if recover() == nil {
			panic("did not panic")
		}
	}()
	x()

	var u31 uint64 = 1;
	_, _ = u30, u31;
	var u32 uint64 = 18446744073709551615;
	var u33 uint64 = +18446744073709551615;
	if u32 != (1<<64)-1 { panic("u32\n"); }
	if u33 != (1<<64)-1 { panic("u33\n"); }
	var i34 int64 = ^0;  // note: 2's complement means ^0 == -1
	if i34 != -1 { panic("i34") }
}
/*
bug12.go:5: overflow converting constant to <uint64>UINT64
bug12.go:6: overflow converting constant to <uint64>UINT64

	var ix Intf = X{x}
	t1 := ix.Get()
	t2 := x.Get()
	if !bytes.Equal(t1, t2) {
		panic(t1)
	}

	p1 := ix.RetPtr(5)
	p2 := x.RetPtr(7)
	if *p1 != 6 || *p2 != 8 {
		panic(*p1)
	}

	r1, r2 := ix.RetRPtr(10)
	r3, r4 := x.RetRPtr(13)
	if r1 != 11 || *r2 != 11 || r3 != 14 || *r4 != 14 {
		panic("bad RetRPtr")
	}

	x++
	return x
}
func main() {
	if got, want := inc(int32(5)), int32(6); got != want {
		panic(fmt.Sprintf("got %d, want %d", got, want))
	}
	if got, want := inc(float64(5)), float64(6.0); got != want {
		panic(fmt.Sprintf("got %d, want %d", got, want))
	}
	if got, want := inc(complex64(5)), complex64(6.0); got != want {
		panic(fmt.Sprintf("got %d, want %d", got, want))
	}

package main

import "plugin"

func main() {
	p, err := plugin.Open("plugin.so")
	if err != nil {
		panic(err)
	}

	sym, err := p.Lookup("G")
	if err != nil {
		panic(err)
	}
	g := sym.(func() bool)
	if !g() {
		panic("expected types to match, Issue #18584")
	}

# Tests issue #12156, a former index out of range panic.

env GO111MODULE=off
env GOPATH=$WORK/gopath/src/testvendor2 # vendor/x is directly in $GOPATH, not in $GOPATH/src
cd $WORK/gopath/src/testvendor2/src/p

! go build p.go
! stderr panic # Make sure it doesn't panic
stderr 'cannot find package "x"'

-- testvendor2/src/p/p.go --
package p

import "x"
-- testvendor2/vendor/x/x.go --