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-rw-r--r--src/libutil/serialise.hh7
1 files changed, 3 insertions, 4 deletions
diff --git a/src/libutil/serialise.hh b/src/libutil/serialise.hh
index e5a9df1d050a..3d296cf6d8d6 100644
--- a/src/libutil/serialise.hh
+++ b/src/libutil/serialise.hh
@@ -72,6 +72,8 @@ struct BufferedSource : Source
 struct FdSink : BufferedSink
 {
     int fd;
+    bool warn;
+    size_t written;
 
     FdSink() : fd(-1) { }
     FdSink(int fd) : fd(fd) { }
@@ -95,10 +97,7 @@ struct FdSource : BufferedSource
 struct StringSink : Sink
 {
     string s;
-    void operator () (const unsigned char * data, size_t len)
-    {
-        s.append((const char *) data, len);
-    }
+    void operator () (const unsigned char * data, size_t len);
 };