gdb and "No symbol xxx in current context"

[Michael Monashev]

Hi.

I used gbd 7.10 with "Go Runtime support" to print value of "port"
variable after flag.Parse(), and always saw
"No symbol "port" in current context."

But fmt.Println(port) works fine:

(gdb)n
20 flag.Parse()
(gdb)
22 fmt.Println(port)
(gdb) p port
No symbol "port" in current context.
(gdb)n
12345

Code:

func main() {
var port int
...
flag.IntVar(&port, "port", 12345, "Port")
...
flag.Parse()

fmt.Println(port)
...
}

How to print value of "port"?

--
Michael

[Florin Patan]

Hi, 

According to the documentation, https://golang.org/doc/gdb, gdb is not useful unless you are compiling with gccgo.

Please try and use delve, https://github.com/derekparker/delve, which is still in pre-1.0 but works better than gdb in my exprience.

Cheers