commit 56f506c09facdac840db5b94821e9d507926440a
author Benjamin Peterson <benjamin@python.org> Tue Oct 20 13:18:00 2020 -0700
committer Copybara-Service <copybara-worker@google.com> Tue Oct 20 13:19:14 2020 -0700
tree 3ceefc2f79b711c1860b419e0b44f35237c614a0
parent 00e9af9690c1e7d599f1b0e9f8c360ae2983f076

Flush err after completing standalone jar build request.

Otherwise, diagnostics are eaten.

Closes #12268.

PiperOrigin-RevId: 338123554

src/java_tools/buildjar/java/com/google/devtools/build/buildjar/BazelJavaBuilder.java

diff --git a/src/java_tools/buildjar/java/com/google/devtools/build/buildjar/BazelJavaBuilder.java b/src/java_tools/buildjar/java/com/google/devtools/build/buildjar/BazelJavaBuilder.java
index 781e61e..2c80f37 100644
--- a/src/java_tools/buildjar/java/com/google/devtools/build/buildjar/BazelJavaBuilder.java
+++ b/src/java_tools/buildjar/java/com/google/devtools/build/buildjar/BazelJavaBuilder.java
@@ -43,10 +43,15 @@
       WorkRequestHandler workerHandler = new WorkRequestHandler(builder::parseAndBuild);
       System.exit(workerHandler.processRequests(System.in, System.out, System.err));
     } else {
-      System.exit(
-          builder.parseAndBuild(
-              Arrays.asList(args),
-              new PrintWriter(new OutputStreamWriter(System.err, Charset.defaultCharset()))));
+      PrintWriter pw =
+          new PrintWriter(new OutputStreamWriter(System.err, Charset.defaultCharset()));
+      int returnCode;
+      try {
+        returnCode = builder.parseAndBuild(Arrays.asList(args), pw);
+      } finally {
+        pw.flush();
+      }
+      System.exit(returnCode);
     }
   }