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html/template: runtime error: slice bounds out of range (2) #10613

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dvyukov opened this issue Apr 29, 2015 · 3 comments
Closed

html/template: runtime error: slice bounds out of range (2) #10613

dvyukov opened this issue Apr 29, 2015 · 3 comments
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Go1.5

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@dvyukov
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dvyukov commented Apr 29, 2015

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 = "<style>\xbbߤ2Dq\x8e%5\xf1\x945\xf1\x94</style>"
panic: runtime error: slice bounds out of range

goroutine 1 [running]:
html/template.(*escaper).escapeText(0xc208010540, 0x2000000000f, 0x0, 0xc208014810, 0x0, 0x0)
    src/html/template/escape.go:596 +0xceb
html/template.(*escaper).escape(0xc208010540, 0x0, 0x0, 0x7fe7fb498378, 0xc208014810, 0x700000000000000, 0x0)
    src/html/template/escape.go:129 +0x31a
html/template.(*escaper).escapeList(0xc208010540, 0x0, 0x0, 0xc2080147e0, 0x0, 0x0)
    src/html/template/escape.go:440 +0x1c9
html/template.(*escaper).escapeListConditionally(0xc208010500, 0x0, 0x0, 0xc2080147e0, 0xc2080419b0, 0x0, 0x0, 0x7fe7fb644000)
    src/html/template/escape.go:455 +0x4be
html/template.(*escaper).escapeTemplateBody(0xc208010500, 0x0, 0x0, 0xc208010440, 0x0, 0x0, 0xc20000000000001d)
    src/html/template/escape.go:573 +0x1e2
html/template.(*escaper).computeOutCtx(0xc208010500, 0x0, 0x0, 0xc208010440, 0x0, 0x0)
    src/html/template/escape.go:534 +0xc9
html/template.(*escaper).escapeTree(0xc208010500, 0x0, 0x0, 0x7fe7fb4983c0, 0xc2080147e0, 0x5ba240, 0x3, 0x0, 0x0, 0x0, ...)
    src/html/template/escape.go:527 +0x77f
html/template.escapeTemplate(0xc2080146f0, 0x7fe7fb4983c0, 0xc2080147e0, 0x5ba240, 0x3, 0x0, 0x0)
    src/html/template/escape.go:23 +0x334
html/template.(*Template).escape(0xc2080146f0, 0x0, 0x0)
    src/html/template/template.go:85 +0x35d
html/template.(*Template).Execute(0xc2080146f0, 0x7fe7fb498350, 0xc20800a4c0, 0x0, 0x0, 0x0, 0x0)
    src/html/template/template.go:101 +0x37
main.main()
    /tmp/htmltempl.go:13 +0x290

on commit ccc76db
@dvyukov dvyukov added this to the Go1.5 milestone Apr 29, 2015
@dspezia
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dspezia commented May 3, 2015

See my explanation in #10612
This problem is fixed on tip; this issue can be closed.

@dvyukov
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dvyukov commented May 3, 2015

Test before closing please.

@robpike
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robpike commented May 3, 2015

Fixed at tip (tested).

@robpike robpike closed this as completed May 3, 2015
@golang golang locked and limited conversation to collaborators Jun 25, 2016
@rsc rsc unassigned robpike Jun 23, 2022
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