1 files changed, 5 insertions, 1 deletions
diff --git a/klm/util/double-conversion/utils.h b/klm/util/double-conversion/utils.h
index 2bd71605..9ccb3b65 100644
--- a/klm/util/double-conversion/utils.h
+++ b/klm/util/double-conversion/utils.h
@@ -299,7 +299,11 @@ template <class Dest, class Source>
 inline Dest BitCast(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]
+#if __GNUC__ > 4 || __GNUC__ == 4 && __GNUC_MINOR__ >= 8
+      __attribute__((unused))
+#endif
+      ;
 
   Dest dest;
   memmove(&dest, &source, sizeof(dest));