Make experimental_inmemory_dotd_files not fail with local execution

If actions are executed locally, silently fall back to reading the on-disk .d file.

PiperOrigin-RevId: 183376432

2 files changed, 7 insertions, 6 deletions

diff --git a/src/main/java/com/google/devtools/build/lib/rules/cpp/CppCompileAction.java b/src/main/java/com/google/devtools/build/lib/rules/cpp/CppCompileAction.java
index 7f520dcaaa..70446b2809 100644
--- a/src/main/java/com/google/devtools/build/lib/rules/cpp/CppCompileAction.java
+++ b/src/main/java/com/google/devtools/build/lib/rules/cpp/CppCompileAction.java
@@ -1216,7 +1216,13 @@ public class CppCompileAction extends AbstractAction
       // case where we expected an in-memory .d file, but we did not get an appropriate response.
       // Perhaps we produced the file locally.
       if (dotdFile.artifact() != null || reply == null) {
-        return depSet.read(dotdFile.getPath());
+        Path dotdPath;
+        if (dotdFile.artifact() != null) {
+          dotdPath = dotdFile.getPath();
+        } else {
+          dotdPath = execRoot.getRelative(dotdFile.getSafeExecPath());
+        }
+        return depSet.read(dotdPath);
       } else {
         // This is an in-memory .d file.
         return depSet.process(reply.getContents());
diff --git a/src/main/java/com/google/devtools/build/lib/rules/cpp/SpawnGccStrategy.java b/src/main/java/com/google/devtools/build/lib/rules/cpp/SpawnGccStrategy.java
index 4b64e2b7ad..77966e0f88 100644
--- a/src/main/java/com/google/devtools/build/lib/rules/cpp/SpawnGccStrategy.java
+++ b/src/main/java/com/google/devtools/build/lib/rules/cpp/SpawnGccStrategy.java
@@ -26,7 +26,6 @@ import com.google.devtools.build.lib.actions.SimpleSpawn;
 import com.google.devtools.build.lib.actions.Spawn;
 import com.google.devtools.build.lib.actions.SpawnActionContext;
 import com.google.devtools.build.lib.actions.SpawnResult;
-import com.google.devtools.build.lib.actions.UserExecException;
 import java.util.List;
 
 /**
@@ -50,10 +49,6 @@ public class SpawnGccStrategy implements CppCompileActionContext {
   public CppCompileActionResult execWithReply(
       CppCompileAction action, ActionExecutionContext actionExecutionContext)
       throws ExecException, InterruptedException {
-    if (action.getDotdFile() != null && action.getDotdFile().artifact() == null) {
-      throw new UserExecException("cannot execute remotely or locally: "
-          + action.getPrimaryInput().getExecPathString());
-    }
     Iterable<Artifact> inputs = Iterables.concat(action.getInputs(), action.getAdditionalInputs());
     Spawn spawn = new SimpleSpawn(
         action,