Template.Execute (): invalid memory address or dereferencing of the bottom pointer

Question

I am trying to use Go html / template with custom separators.

However, I can parse and execute my file "index.html" when I try to change my templates. Separators encounter the following error:

runtime error: invalid memory address or nil pointer dereference goroutine

Here is my code:

package main

import (
        "html/template"
        "net/http"
)

var sherrifTmpl = template.New("test").Delims("{[{", "}]}")

func serveHome(w http.ResponseWriter, r *http.Request) {
        template.Must(sherrifTmpl.ParseFiles("index.html")).Execute(w, r)
}

If I try to do one of the following:

package main

import (
        "html/template"
        "net/http"
)

func serveHome(w http.ResponseWriter, r *http.Request) {
        template.Must(template.ParseFiles("index.html")).Execute(w, r)
}

Or:

package main

import (
        "html/template"
        "net/http"
)

var sherrifTmpl = template.New("test").Delims("{[{", "}]}")

func serveHome(w http.ResponseWriter, r *http.Request) {
        template.Must(sherrifTmpl.ParseFiles("{[{.Host}]}")).Execute(w, r)
}

Everything is working. I even tried to catch ParseFiles error. But still no luck:

package main

import (
        "html/template"
        "net/http"
)

var sherrifTmpl = template.New("test").Delims("{[{", "}]}")

func serveHome(w http.ResponseWriter, r *http.Request) {
        homeTmpl, err := sherrifTmpl.ParseFiles("index.html")
        if err != nil {
            panic(err)
        }
        homeTmpl.Execute(w, r)
}

I do not see where I am doing wrong. I would be grateful if any of you would help me in this matter.

Update 1:

Here is the panic:

2015/04/13 17:43:35 http: panic serving 127.0.0.1:56634: runtime error: invalid memory address or nil pointer dereference
goroutine 5 [running]:
net/http.func·011()
    /usr/local/go/src/net/http/server.go:1130 +0xbb
html/template.(*Template).escape(0xc20803ad80, 0x0, 0x0)
    /usr/local/go/src/html/template/template.go:59 +0xe4
html/template.(*Template).Execute(0xc20803ad80, 0x7f550e16f420, 0xc20805cd20, 0x7280c0, 0xc208032ea0, 0x0, 0x0)
    /usr/local/go/src/html/template/template.go:75 +0x3d
main.serveHome(0x7f550e16f328, 0xc20805cd20, 0xc208032ea0)
    /home/sasan/Works/Karina/Mobazi/Mon-Panel/routes.go:11 +0x136
net/http.HandlerFunc.ServeHTTP(0x7eb738, 0x7f550e16f328, 0xc20805cd20, 0xc208032ea0)
    /usr/local/go/src/net/http/server.go:1265 +0x41
net/http.(*ServeMux).ServeHTTP(0xc20803a6c0, 0x7f550e16f328, 0xc20805cd20, 0xc208032ea0)
    /usr/local/go/src/net/http/server.go:1541 +0x17d
net/http.serverHandler.ServeHTTP(0xc20805a0c0, 0x7f550e16f328, 0xc20805cd20, 0xc208032ea0)
    /usr/local/go/src/net/http/server.go:1703 +0x19a
net/http.(*conn).serve(0xc20805cc80)
    /usr/local/go/src/net/http/server.go:1204 +0xb57
created by net/http.(*Server).Serve
    /usr/local/go/src/net/http/server.go:1751 +0x35e

Answer 1

"" . 2 ; nil "test" "index.html".

,

var sherrifTmpl = template.New("index.html").Delims("{[{", "}]}")

ExecuteTemplate

template.Must(sherrifTmpl.ParseFiles("index.html")).ExecuteTemplate(w, "index.html", r)

html/template - . , ​​ go1.5 ( ​​ git master).