10 files changed, 45 insertions, 2 deletions
diff --git a/test/files/neg/quasiquotes-syntax-error-position.check b/test/files/neg/quasiquotes-syntax-error-position.check
index 9fd6ce0417..b12a7d13d6 100644
--- a/test/files/neg/quasiquotes-syntax-error-position.check
+++ b/test/files/neg/quasiquotes-syntax-error-position.check
@@ -16,8 +16,7 @@ quasiquotes-syntax-error-position.scala:9: error: '{' expected but end of quote
 quasiquotes-syntax-error-position.scala:10: error: ';' expected but '@' found.
   q"foo@$a"
        ^
-quasiquotes-syntax-error-position.scala:11: error: case classes without a parameter list are not allowed;
-use either case objects or case classes with an explicit `()' as a parameter list.
+quasiquotes-syntax-error-position.scala:11: error: case classes must have a parameter list; try 'case class A()' or 'case object A'
   q"case class A"
                 ^
 quasiquotes-syntax-error-position.scala:12: error: identifier expected but ']' found.
diff --git a/test/files/neg/t10097.check b/test/files/neg/t10097.check
new file mode 100644
index 0000000000..1f70546b57
--- /dev/null
+++ b/test/files/neg/t10097.check
@@ -0,0 +1,10 @@
+t10097.scala:2: error: case classes must have a non-implicit parameter list; try 'case class C()(...)'
+case class C(implicit val c: Int)
+            ^
+t10097.scala:4: error: case classes must have a non-implicit parameter list; try 'case class D()(...)(...)'
+case class D(implicit c: Int)(s: String)
+            ^
+t10097.scala:4: error: an implicit parameter section must be last
+case class D(implicit c: Int)(s: String)
+             ^
+three errors found
diff --git a/test/files/neg/t10097.flags b/test/files/neg/t10097.flags
new file mode 100644
index 0000000000..714bbf5125
--- /dev/null
+++ b/test/files/neg/t10097.flags
@@ -0,0 +1 @@
+-Xsource:2.13
diff --git a/test/files/neg/t10097.scala b/test/files/neg/t10097.scala
new file mode 100644
index 0000000000..b2f05e2972
--- /dev/null
+++ b/test/files/neg/t10097.scala
@@ -0,0 +1,4 @@
+
+case class C(implicit val c: Int)
+
+case class D(implicit c: Int)(s: String)
diff --git a/test/files/neg/t10097b.check b/test/files/neg/t10097b.check
new file mode 100644
index 0000000000..14535fee34
--- /dev/null
+++ b/test/files/neg/t10097b.check
@@ -0,0 +1,6 @@
+t10097b.scala:2: warning: case classes should have a non-implicit parameter list; adapting to 'case class C()(...)'
+case class C(implicit val c: Int)
+            ^
+error: No warnings can be incurred under -Xfatal-warnings.
+one warning found
+one error found
diff --git a/test/files/neg/t10097b.flags b/test/files/neg/t10097b.flags
new file mode 100644
index 0000000000..c6bfaf1f64
--- /dev/null
+++ b/test/files/neg/t10097b.flags
@@ -0,0 +1 @@
+-deprecation -Xfatal-warnings
diff --git a/test/files/neg/t10097b.scala b/test/files/neg/t10097b.scala
new file mode 100644
index 0000000000..f166db6792
--- /dev/null
+++ b/test/files/neg/t10097b.scala
@@ -0,0 +1,3 @@
+
+case class C(implicit val c: Int)
+
diff --git a/test/files/neg/t8704.check b/test/files/neg/t8704.check
new file mode 100644
index 0000000000..b567a8bb17
--- /dev/null
+++ b/test/files/neg/t8704.check
@@ -0,0 +1,11 @@
+t8704.scala:7: warning: 2 parameter sections are effectively implicit
+class D(private implicit val i: Int)(implicit s: String)
+                                                        ^
+t8704.scala:3: error: an implicit parameter section must be last
+class C(i: Int)(implicit j: Int)(implicit k: Int)(n: Int) {
+                ^
+t8704.scala:3: error: multiple implicit parameter sections are not allowed
+class C(i: Int)(implicit j: Int)(implicit k: Int)(n: Int) {
+                                 ^
+one warning found
+two errors found
diff --git a/test/files/neg/t8704.flags b/test/files/neg/t8704.flags
new file mode 100644
index 0000000000..f175a06c74
--- /dev/null
+++ b/test/files/neg/t8704.flags
@@ -0,0 +1 @@
+-Ywarn-extra-implicit
diff --git a/test/files/neg/t8704.scala b/test/files/neg/t8704.scala
new file mode 100644
index 0000000000..db43bfcaa5
--- /dev/null
+++ b/test/files/neg/t8704.scala
@@ -0,0 +1,7 @@
+
+
+class C(i: Int)(implicit j: Int)(implicit k: Int)(n: Int) {
+  def f = n
+}
+
+class D(private implicit val i: Int)(implicit s: String)