diff options
-rw-r--r-- | src/include/types.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/include/types.h b/src/include/types.h index c783b6e93ce..dff47ac2b98 100644 --- a/src/include/types.h +++ b/src/include/types.h @@ -120,7 +120,7 @@ namespace __gnu_cxx { // -- io helpers -- template<class A, class B> -inline ostream& operator<<(ostream& out, const pair<A,B> v) { +inline ostream& operator<<(ostream& out, const pair<A,B>& v) { return out << v.first << "," << v.second; } |