Add type assertion that TreeFileArtifact's parentTreeArtifact member is a

SpecialArtifact.

PiperOrigin-RevId: 184539696

1 files changed, 2 insertions, 1 deletions

diff --git a/src/main/java/com/google/devtools/build/lib/rules/cpp/CppHelper.java b/src/main/java/com/google/devtools/build/lib/rules/cpp/CppHelper.java
index c9f96cfca0..5f56c9f1d7 100644
--- a/src/main/java/com/google/devtools/build/lib/rules/cpp/CppHelper.java
+++ b/src/main/java/com/google/devtools/build/lib/rules/cpp/CppHelper.java
@@ -25,6 +25,7 @@ import com.google.common.collect.Iterables;
 import com.google.devtools.build.lib.actions.Action;
 import com.google.devtools.build.lib.actions.ActionOwner;
 import com.google.devtools.build.lib.actions.Artifact;
+import com.google.devtools.build.lib.actions.Artifact.SpecialArtifact;
 import com.google.devtools.build.lib.actions.MiddlemanFactory;
 import com.google.devtools.build.lib.actions.ParameterFile;
 import com.google.devtools.build.lib.analysis.AnalysisUtils;
@@ -965,7 +966,7 @@ public class CppHelper {
   }
 
   /** Returns the corresponding compiled TreeArtifact given the source TreeArtifact. */
-  public static Artifact getCompileOutputTreeArtifact(
+  public static SpecialArtifact getCompileOutputTreeArtifact(
       RuleContext ruleContext, Artifact sourceTreeArtifact, boolean usePic) {
     PathFragment objectDir = getObjDirectory(ruleContext.getLabel(), usePic);
     PathFragment rootRelativePath = sourceTreeArtifact.getRootRelativePath();