scons: Address clang 3.2 compilation error

This patch fixes a compilation error encountered using clang 3.2 on OSX.

diff --git a/src/proto/protoio.cc b/src/proto/protoio.cc
index ae1e2d8c23d6de52cf0c446bc127e005e179f73e..76364794f28d452715e765aad33a2c77d20d2304 100644 (file)
--- a/src/proto/protoio.cc
+++ b/src/proto/protoio.cc
@@ -91,7 +91,7 @@ ProtoOutputStream::write(const Message& msg)
 }
 
 ProtoInputStream::ProtoInputStream(const string& filename) :
-    fileStream(filename, ios::in | ios::binary), fileName(filename),
+    fileStream(filename.c_str(), ios::in | ios::binary), fileName(filename),
     useGzip(false),
     zeroCopyStream(NULL), gzipStream(NULL), codedStream(NULL)
 {