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-rw-r--r--src/mem/ruby/system/DirectoryMemory.cc2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/mem/ruby/system/DirectoryMemory.cc b/src/mem/ruby/system/DirectoryMemory.cc
index 7fb9b44a0..b3999fb3f 100644
--- a/src/mem/ruby/system/DirectoryMemory.cc
+++ b/src/mem/ruby/system/DirectoryMemory.cc
@@ -31,6 +31,8 @@
#include "mem/ruby/system/DirectoryMemory.hh"
#include "mem/ruby/system/System.hh"
+using namespace std;
+
int DirectoryMemory::m_num_directories = 0;
int DirectoryMemory::m_num_directories_bits = 0;
uint64_t DirectoryMemory::m_total_size_bytes = 0;