Skylark error messages now include a stack trace.

This means that some tests had to be changed from using exact equality of error messages to working with contains() / startsWith().

--
MOS_MIGRATED_REVID=100923593

1 files changed, 16 insertions, 0 deletions

diff --git a/src/main/java/com/google/devtools/build/lib/events/Location.java b/src/main/java/com/google/devtools/build/lib/events/Location.java
index 58301b7ea2..608d307c68 100644
--- a/src/main/java/com/google/devtools/build/lib/events/Location.java
+++ b/src/main/java/com/google/devtools/build/lib/events/Location.java
@@ -275,4 +275,20 @@ public abstract class Location implements Serializable {
       return line * 41 + column;
     }
   }
+
+  /**
+   * Dummy location for built-in functions which ensures that stack traces contain "nice" location
+   * strings.
+   */
+  public static final Location BUILTIN = new Location(0, 0) {
+    @Override
+    public String toString() {
+      return "Built-In";
+    }
+
+    @Override
+    public PathFragment getPath() {
+      return null;
+    }
+  };
 }