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Work around "a pure expression does nothing" warning, take 3 

Fixes https://github.com/sbt/sbt/issues/6161
Ref https://github.com/scala/bug/issues/12112

This uses the configurable warning backported to Scala 2.12.
This commit is contained in:
Eugene Yokota 2021-03-07 03:17:42 -05:00
parent ff6cbf2e1f
commit 9cd4c0d05f
1 changed files with 2 additions and 1 deletions
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3
core-macros/src/main/scala/sbt/internal/util/appmacro/Instance.scala
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@ -201,7 +201,8 @@ object Instance {
val tx = util.transformWrappers(tree, (n, tpe, t, replace) => sub(n, tpe, t, replace)) val tx = util.transformWrappers(tree, (n, tpe, t, replace) => sub(n, tpe, t, replace))
// resetting attributes must be: a) local b) done here and not wider or else there are obscure errors // resetting attributes must be: a) local b) done here and not wider or else there are obscure errors
val tr = makeApp(inner(tx)) val tr = makeApp(inner(tx))
c.Expr[i.M[N[T]]](tr) val noWarn = q"""($tr: @scala.annotation.nowarn("cat=other-pure-statement"))"""
c.Expr[i.M[N[T]]](noWarn)
} }
import Types._ import Types._