Avoid copying file contents when reading the expected number of bytes in#readContentWithLimit().

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MOS_MIGRATED_REVID=106995917

1 files changed, 1 insertions, 1 deletions

diff --git a/src/main/java/com/google/devtools/build/lib/vfs/FileSystemUtils.java b/src/main/java/com/google/devtools/build/lib/vfs/FileSystemUtils.java
index 0fd54f591d..4ec7699670 100644
--- a/src/main/java/com/google/devtools/build/lib/vfs/FileSystemUtils.java
+++ b/src/main/java/com/google/devtools/build/lib/vfs/FileSystemUtils.java
@@ -956,7 +956,7 @@ public class FileSystemUtils {
     byte[] buffer = new byte[limit];
     try (InputStream inputStream = byteSource.openBufferedStream()) {
       int read = ByteStreams.read(inputStream, buffer, 0, limit);
-      return Arrays.copyOf(buffer, read);
+      return read == limit ? buffer : Arrays.copyOf(buffer, read);
     }
   }