Bazel client: fix compiler warnings

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MOS_MIGRATED_REVID=139899429

1 files changed, 4 insertions, 2 deletions

diff --git a/src/main/cpp/util/file.h b/src/main/cpp/util/file.h
index 6118eefb0b..13a2b4828c 100644
--- a/src/main/cpp/util/file.h
+++ b/src/main/cpp/util/file.h
@@ -24,11 +24,13 @@ class IPipe {
   virtual ~IPipe() {}
 
   // Sends `size` bytes from `buffer` through the pipe.
-  virtual bool Send(void *buffer, size_t size) = 0;
+  // Returns true if `size` is not negative and could send all the data.
+  virtual bool Send(void *buffer, int size) = 0;
 
   // Receives at most `size` bytes into `buffer` from the pipe.
   // Returns the number of bytes received; sets `errno` upon error.
-  virtual int Receive(void *buffer, size_t size) = 0;
+  // If `size` is negative, returns -1.
+  virtual int Receive(void *buffer, int size) = 0;
 };
 
 // Returns the part of the path before the final "/".  If there is a single