Correcting the error number in expected messages.

Author: Lucy Martin

compiler/test/dotty/tools/vulpix/FileDiff.scala

@@ -28,10 +28,18 @@ object FileDiff {
       if (!(new File(checkFile)).exists) Nil
       else Using(Source.fromFile(checkFile, StandardCharsets.UTF_8.name))(_.getLines().toList).get
 
-    if (!matches(outputLines, checkLines)) Some(
-      s"""|Output from '$sourceTitle' did not match check file. Actual output:
-          |${outputLines.mkString(EOL)}
-          |""".stripMargin + "\n")
+    if (!matches(outputLines, checkLines)) {
+      Some(
+        s"""|Output from '$sourceTitle' did not match check file. Actual output:
+            |${outputLines.mkString(EOL)}
+            |
+            |Output
+            |${outputLines.map(s => s.stripLineEnd.toList.map(_.toInt.toHexString).mkString(" ")).mkString("\n")}
+            |
+            |Check
+            |${checkLines.map(s => s.stripLineEnd.toList.map(_.toInt.toHexString).mkString(" ")).mkString("\n")}
+            |""".stripMargin + "\n")
+    }
     else None
   }
 

tests/neg/i20105.check

@@ -1,4 +1,4 @@
--- [E195] Syntax Warning: tests\neg\i20105.scala:6:9 -------------------------------------------------------------------
+-- [E199] Syntax Warning: tests\neg\i20105.scala:6:9 -------------------------------------------------------------------
 6 |      foo()
   |      ^^^^^
   |      The tail recursive def foo contains a recursive call inside the non-inlined inner def bar

tests/warn/i20105.check

@@ -1,4 +1,4 @@
--- [E195] Syntax Warning: tests\warn\i20105.scala:6:9 ------------------------------------------------------------------
+-- [E199] Syntax Warning: tests\warn\i20105.scala:6:9 ------------------------------------------------------------------
 6 |      foo() // warn
   |      ^^^^^
   |      The tail recursive def foo contains a recursive call inside the non-inlined inner def bar