String interpolation bug fix

This change fixes a bug in class StringContext.scala.
Parts were not correctly added to the resulting string.

This commit includes a test case which covers the
example reported in the bug.

Closes SI-5614.

4 files changed, 10 insertions, 1 deletions

diff --git a/src/library/scala/StringContext.scala b/src/library/scala/StringContext.scala
index 1b01355108..882451680a 100644
--- a/src/library/scala/StringContext.scala
+++ b/src/library/scala/StringContext.scala
@@ -144,7 +144,7 @@ object StringContext {
     var cur = 0
     var idx = 0
     def output(ch: Char) = {
-      bldr append str substring (start, cur)
+      bldr append str.substring (start, cur)
       bldr append ch
       start = idx
     }
diff --git a/test/files/run/t5614.check b/test/files/run/t5614.check
new file mode 100644
index 0000000000..f659f2da3b
--- /dev/null
+++ b/test/files/run/t5614.check
@@ -0,0 +1,3 @@
+3
+a
+b
diff --git a/test/files/run/t5614.flags b/test/files/run/t5614.flags
new file mode 100644
index 0000000000..48fd867160
--- /dev/null
+++ b/test/files/run/t5614.flags
@@ -0,0 +1 @@
+-Xexperimental
diff --git a/test/files/run/t5614.scala b/test/files/run/t5614.scala
new file mode 100644
index 0000000000..7c85c33f12
--- /dev/null
+++ b/test/files/run/t5614.scala
@@ -0,0 +1,5 @@
+object Test extends App {
+  val str = s"a\nb"
+  println(str.length)
+  println(str)
+}