diff -Nur mongodb-src-r2.4.4.orig/src/third_party/s2/base/casts.h mongodb-src-r2.4.4/src/third_party/s2/base/casts.h
--- mongodb-src-r2.4.4.orig/src/third_party/s2/base/casts.h	2013-07-06 16:26:05.497291822 +0200
+++ mongodb-src-r2.4.4/src/third_party/s2/base/casts.h	2013-07-07 12:27:23.350678970 +0200
@@ -160,7 +160,7 @@
 inline Dest bit_cast(const Source& source) {
   // Compile time assertion: sizeof(Dest) == sizeof(Source)
   // A compile error here means your Dest and Source have different sizes.
-  typedef char VerifySizesAreEqual [sizeof(Dest) == sizeof(Source) ? 1 : -1];
+  typedef char VerifySizesAreEqual [sizeof(Dest) == sizeof(Source) ? 1 : -1] __attribute__((unused));
 
   Dest dest;
   memcpy(&dest, &source, sizeof(dest));
diff -Nur mongodb-src-r2.4.4.orig/src/third_party/s2/base/macros.h mongodb-src-r2.4.4/src/third_party/s2/base/macros.h
--- mongodb-src-r2.4.4.orig/src/third_party/s2/base/macros.h	2013-07-06 16:26:05.499292077 +0200
+++ mongodb-src-r2.4.4/src/third_party/s2/base/macros.h	2013-07-07 12:22:38.549907130 +0200
@@ -46,7 +46,7 @@
 };
 
 #define COMPILE_ASSERT(expr, msg) \
-  typedef CompileAssert<(bool(expr))> msg[bool(expr) ? 1 : -1]
+  typedef CompileAssert<(bool(expr))> msg[bool(expr) ? 1 : -1] __attribute__((unused))
 
 // Implementation details of COMPILE_ASSERT:
 //
diff -Nur mongodb-src-r2.4.4.orig/src/third_party/s2/util/coding/coder.h mongodb-src-r2.4.4/src/third_party/s2/util/coding/coder.h
--- mongodb-src-r2.4.4.orig/src/third_party/s2/util/coding/coder.h	2013-07-06 16:26:05.509293353 +0200
+++ mongodb-src-r2.4.4/src/third_party/s2/util/coding/coder.h	2013-07-07 12:20:37.419825340 +0200
@@ -358,14 +358,14 @@
 
 inline void Encoder::putfloat(float f) {
   uint32 v;
-  typedef char VerifySizesAreEqual[sizeof(f) == sizeof(v) ? 1 : -1];
+  typedef char VerifySizesAreEqual[sizeof(f) == sizeof(v) ? 1 : -1] __attribute__((unused));
   memcpy(&v, &f, sizeof(f));
   put32(v);
 }
 
 inline void Encoder::putdouble(double d) {
   uint64 v;
-  typedef char VerifySizesAreEqual[sizeof(d) == sizeof(v) ? 1 : -1];
+  typedef char VerifySizesAreEqual[sizeof(d) == sizeof(v) ? 1 : -1] __attribute__((unused));
   memcpy(&v, &d, sizeof(d));
   put64(v);
 }
@@ -408,7 +408,7 @@
 inline float Decoder::getfloat() {
   uint32 v = get32();
   float f;
-  typedef char VerifySizesAreEqual[sizeof(f) == sizeof(v) ? 1 : -1];
+  typedef char VerifySizesAreEqual[sizeof(f) == sizeof(v) ? 1 : -1] __attribute__((unused));
   memcpy(&f, &v, sizeof(f));
   return f;
 }
@@ -416,7 +416,7 @@
 inline double Decoder::getdouble() {
   uint64 v = get64();
   double d;
-  typedef char VerifySizesAreEqual[sizeof(d) == sizeof(v) ? 1 : -1];
+  typedef char VerifySizesAreEqual[sizeof(d) == sizeof(v) ? 1 : -1] __attribute__((unused));
   memcpy(&d, &v, sizeof(d));
   return d;
 }