Fix non-gcc builds.

fb2be485 · Victor Zverovich · db2cf61c · fb2be485
Commit fb2be485 authored Feb 15, 2014 by Victor Zverovich
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format.h format.h +2 -0

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--- a/format.h
+++ b/format.h
@@ -45,6 +45,8 @@
 #ifdef __GNUC__
 # define FMT_GCC_VERSION (__GNUC__ * 100 + __GNUC_MINOR__)
 # define FMT_GCC_EXTENSION __extension__
+#else
+# define FMT_GCC_EXTENSION
 #endif

 // Compatibility with compilers other than clang.