What's the purpose of the for loop in the main of runtime.proc

I encountered following code at the end of the main func of https://golang.org/src/runtime/proc.go (Line 221 for the version at the time of this post):

for {
    var x *int32
    *x = 0

Anyone know what’s the purpose of the for loop?


It’s after exit, never executed. Perhaps, if you remove the exit line, the loop keeps the program running infinitely.

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