SI-3235 math.round() returns wrong results for Int and Long

Minimal fix for SI-3235.

This minimal fix includes deprecation messages to aid detection of probable errors.

Test verifies behavior: the correct values are returned, and deprecation messages are emitted.

3 files changed, 21 insertions, 0 deletions

diff --git a/test/files/run/t3235-minimal.check b/test/files/run/t3235-minimal.check
new file mode 100644
index 0000000000..d7f716002f
--- /dev/null
+++ b/test/files/run/t3235-minimal.check
@@ -0,0 +1,12 @@
+t3235-minimal.scala:3: warning: method round in class RichInt is deprecated: This is an integer type; there is no reason to round it.  Perhaps you meant to call this on a floating-point value?
+    assert(123456789.round == 123456789)
+                     ^
+t3235-minimal.scala:4: warning: method round in package math is deprecated: This is an integer type; there is no reason to round it.  Perhaps you meant to call this with a floating-point value?
+    assert(math.round(123456789) == 123456789)
+                ^
+t3235-minimal.scala:5: warning: method round in class RichLong is deprecated: This is an integer type; there is no reason to round it.  Perhaps you meant to call this on a floating-point value?
+    assert(1234567890123456789L.round == 1234567890123456789L)
+                                ^
+t3235-minimal.scala:6: warning: method round in package math is deprecated: This is an integer type; there is no reason to round it.  Perhaps you meant to call this with a floating-point value?
+    assert(math.round(1234567890123456789L) == 1234567890123456789L)
+                ^
diff --git a/test/files/run/t3235-minimal.flags b/test/files/run/t3235-minimal.flags
new file mode 100644
index 0000000000..dcc59ebe32
--- /dev/null
+++ b/test/files/run/t3235-minimal.flags
@@ -0,0 +1 @@
+-deprecation
diff --git a/test/files/run/t3235-minimal.scala b/test/files/run/t3235-minimal.scala
new file mode 100644
index 0000000000..dc9907b63b
--- /dev/null
+++ b/test/files/run/t3235-minimal.scala
@@ -0,0 +1,8 @@
+object Test {
+  def main(args: Array[String]) {
+    assert(123456789.round == 123456789)
+    assert(math.round(123456789) == 123456789)
+    assert(1234567890123456789L.round == 1234567890123456789L)
+    assert(math.round(1234567890123456789L) == 1234567890123456789L)
+  }
+}