2 files changed, 6 insertions, 2 deletions
diff --git a/src/common/dwarf/dwarf2reader.cc b/src/common/dwarf/dwarf2reader.cc
index f2f3d581..49c2ee15 100644
--- a/src/common/dwarf/dwarf2reader.cc
+++ b/src/common/dwarf/dwarf2reader.cc
@@ -517,8 +517,10 @@ void CompilationUnit::ProcessDIEs() {
 
 LineInfo::LineInfo(const char* buffer, uint64 buffer_length,
                    ByteReader* reader, LineInfoHandler* handler):
-    handler_(handler), reader_(reader), buffer_(buffer),
-    buffer_length_(buffer_length) {
+    handler_(handler), reader_(reader), buffer_(buffer) {
+#ifndef NDEBUG
+  buffer_length_ = buffer_length;
+#endif
   header_.std_opcode_lengths = NULL;
 }
 
diff --git a/src/common/dwarf/dwarf2reader.h b/src/common/dwarf/dwarf2reader.h
index 8824bf90..e4f7f495 100644
--- a/src/common/dwarf/dwarf2reader.h
+++ b/src/common/dwarf/dwarf2reader.h
@@ -140,7 +140,9 @@ class LineInfo {
   // the line info to read is.  after_header is the place right after
   // the end of the line information header.
   const char* buffer_;
+#ifndef NDEBUG
   uint64 buffer_length_;
+#endif
   const char* after_header_;
 };