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-rw-r--r--git-compat-util.h22
1 files changed, 18 insertions, 4 deletions
diff --git a/git-compat-util.h b/git-compat-util.h
index 276a43724..86c896296 100644
--- a/git-compat-util.h
+++ b/git-compat-util.h
@@ -4,10 +4,24 @@
#define _FILE_OFFSET_BITS 64
#ifndef FLEX_ARRAY
-#if defined(__GNUC__) && (__GNUC__ < 3)
-#define FLEX_ARRAY 0
-#else
-#define FLEX_ARRAY /* empty */
+/*
+ * See if our compiler is known to support flexible array members.
+ */
+#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)
+# define FLEX_ARRAY /* empty */
+#elif defined(__GNUC__)
+# if (__GNUC__ >= 3)
+# define FLEX_ARRAY /* empty */
+# else
+# define FLEX_ARRAY 0 /* older GNU extension */
+# endif
+#endif
+
+/*
+ * Otherwise, default to safer but a bit wasteful traditional style
+ */
+#ifndef FLEX_ARRAY
+# define FLEX_ARRAY 1
#endif
#endif