SimplePattern errors should now be recovered as wildcard instead of u…

…nimplemented expr (#21438) We should not emit more errors that came from our error recovery term trees. Previously, we've recovered those situations with unimplemented expression term added in #19103 and before that it was just a `null` [Cherry-picked f036195]
scala · Dec 3, 2024 · 72bce19 · 72bce19
1 parent 2992889
commit 72bce19
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Showing 3 changed files with 2 additions and 3 deletions.
diff --git a/compiler/src/dotty/tools/dotc/parsing/Parsers.scala b/compiler/src/dotty/tools/dotc/parsing/Parsers.scala
@@ -3035,7 +3035,7 @@ object Parsers {
         else {
           val start = in.lastOffset
           syntaxErrorOrIncomplete(IllegalStartOfSimplePattern(), expectedOffset)
-          errorTermTree(start)
+          atSpan(Span(start, in.offset)) { Ident(nme.WILDCARD) }
         }
     }
 

diff --git a/tests/neg/i5004.scala b/tests/neg/i5004.scala
@@ -2,5 +2,5 @@ object i0 {
 1 match {
 def this(): Int  // error
   def this()
-} // error
+}
 }
diff --git a/tests/neg/parser-stability-1.scala b/tests/neg/parser-stability-1.scala
@@ -1,4 +1,3 @@
 object x0 {
 x1 match  // error
 def this // error
-// error