cmd/go: go build -o /dev/null a.go creates the file "a" #25579
Description
On current tip (1ba26a3).
Running go build -o /dev/null hello.go creates the executable hello. go build -o x hello.go works as expected.
> rm ./hello
rm: cannot remove './hello': No such file or directory
> go build -o x ~/hello.go
> ls -l x hello
ls: cannot access 'hello': No such file or directory
-rwxr-x--- 1 iant primarygroup 2651894 May 25 13:58 x*
> rm ./x
> go build -o /dev/null ~/hello.go
> ls -l hello
-rwxr-x--- 1 iant primarygroup 2651894 May 25 13:58 hello*