empty-block: Fix false positive on select {}#805
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mgechev merged 1 commit intomgechev:masterfrom Mar 16, 2023
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This fixes a false positive reported by revive on the following:
select {}
This is a way to block the program indefinitely.
It is used in cases like:
- Running a long-running server in a background thread
and blocking `main` from exiting until the application dies.
This is something you might do if your process has
multiple servers/listeners in the same process.
```go
go grpcListenAndServe()
go httpListenAndServe()
go logFlusher()
select {}
```
- In programs compiled to WASM to prevent the application from exiting,
so that the Javascript components may interact with it.
```go
func main() {
js.Global().Set("foo", foo)
select {}
}
```
Without this, one may see an error like,
"Error: Go program has already exited"
As a workaround, these programs can block forever
by receiving from a throwaway channel (`<-make(chan struct{})`),
but `select {}` is still a completely valid way of doing this,
so supporting it makes sense.
The issue was previously reported in mgechev#698 but was closed
because the author was satisfied with a `//nolint` comment.
Now that this rule is part of the default rule set (mgechev#799)
the case for addressing the false positive is stronger.
Resolves mgechev#804
mgechev
approved these changes
Mar 16, 2023
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This fixes a false positive reported by revive on the following:
This is a way to block the program indefinitely.
It is used in cases like:
Running a long-running server in a background thread
and blocking
mainfrom exiting until the application dies.This is something you might do if your process has
multiple servers/listeners in the same process.
In programs compiled to WASM to prevent the application from exiting,
so that the Javascript components may interact with it.
Without this, one may see an error like,
"Error: Go program has already exited"
As a workaround, these programs can block forever
by receiving from a throwaway channel (
<-make(chan struct{})),but
select {}is still a completely valid way of doing this,so supporting it makes sense.
The issue was previously reported in #698 but was closed
because the author was satisfied with a
//nolintcomment.Now that this rule is part of the default rule set (#799)
the case for addressing the false positive is stronger.
Resolves #804