From dc88a1b81befe574228c00712530a53ce9245c60 Mon Sep 17 00:00:00 2001
From: Magnus Lundborg <lundborg.magnus@gmail.com>
Date: Mon, 25 Mar 2013 15:16:01 +0100
Subject: Only use __extension__ from GNU compilers


diff --git a/include/tng_io.h b/include/tng_io.h
index ce56dd5..96d9fc1 100644
--- a/include/tng_io.h
+++ b/include/tng_io.h
@@ -243,7 +243,9 @@ typedef int                     int32_t;
 # if __WORDSIZE == 64
 typedef long int                int64_t;
 # else
+#ifdef __GNUC__
 __extension__
+#endif
 typedef long long int           int64_t;
 # endif
 #endif
@@ -257,7 +259,9 @@ typedef unsigned int            uint32_t;
 #if __WORDSIZE == 64
 typedef unsigned long int       uint64_t;
 #else
+#ifdef __GNUC__
 __extension__
+#endif
 typedef unsigned long long int  uint64_t;
 #endif
 
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