html/template: nil pointer dereference (original) (raw)

The following program crashes with panic:

package main

import ( "html/template" "io/ioutil" )

func main() { t, err := template.New("foo").Parse(string(data)) if err != nil { return } t.Execute(ioutil.Discard, nil) }

var data = "{{""|print ""|.f ""}}"

panic: runtime error: invalid memory address or nil pointer dereference

goroutine 1 [running]:
html/template.ensurePipelineContains(0x2083920a0, 0x20833eae0, 0x1, 0x3)
    src/html/template/escape.go:265 +0x1674
html/template.(*escaper).commit(0x208367d20)
    src/html/template/escape.go:749 +0x36c
html/template.escapeTemplate(0x20833e660, 0x22084e13d0, 0x20833e750, 0x1be2c0, 0x3, 0x0, 0x0)
    src/html/template/escape.go:39 +0x46c
html/template.(*Template).escape(0x20833e660, 0x0, 0x0)
    src/html/template/template.go:85 +0x389
html/template.(*Template).Execute(0x20833e660, 0x22084e1288, 0x2083363c0, 0x0, 0x0, 0x0, 0x0)
    src/html/template/template.go:101 +0x37
main.main()
    test.go:13 +0x25a

go version devel +fbb4c74 Sat May 2 02:48:32 2015 +0000 darwin/amd64