result code = -1
standard error = {
tests/diagnostics/single-target-intrinsic.slang(13): error 30201: function 'doThing' already has a body
T doThing<T>(T in);
  ^~~~~~~
tests/diagnostics/single-target-intrinsic.slang(10): note: see previous definition of 'doThing'
T doThing<T>(T in);
  ^~~~~~~
}
standard output = {
}