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Ignore @throws annotation on non-methods #26802

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Merged
tanishiking merged 1 commit into from
Aug 14, 2026
+10 −1
Merged

Ignore @throws annotation on non-methods #26802

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2 changes: 1 addition & 1 deletion compiler/src/dotty/tools/backend/jvm/GenericSignatures.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -439,7 +439,7 @@ object GenericSignatures {
jsig(info, toplevel = true)
for annot <- sym0.annotations do
annot match
case ThrownException(e) =>
case ThrownException(e) if sym0.is(Method) => // ThrowsSignature is only valid in MethodSignature
builder.append('^')
jsig(e, toplevel = true)
case _ => ()
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9 changes: 9 additions & 0 deletions tests/run/throws-annot.scala
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Expand Up @@ -68,6 +68,15 @@ object TL {
def readNoEx(): Int = 0
}

// @throws on class/object/field must be ignored/compiler shouldn't crash.
@throws(classOf[IOException])
class ThrowsOnClass

@throws(classOf[IOException])
object ThrowsOnObject:
@throws(classOf[IOException])
val field: Int = 0

object Test {
def main(args: Array[String]): Unit = {
TestThrows.run(classOf[TestThrows.Foo])
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