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-rw-r--r--argp/argp.h12
1 files changed, 12 insertions, 0 deletions
diff --git a/argp/argp.h b/argp/argp.h
index cb2f85aee7..78a9d1bb3c 100644
--- a/argp/argp.h
+++ b/argp/argp.h
@@ -49,6 +49,18 @@
# endif
#endif
+/* GCC 2.95 and later have "__restrict"; C99 compilers have
+ "restrict", and "configure" may have defined "restrict". */
+#ifndef __restrict
+# if ! (2 < __GNUC__ || (2 == __GNUC__ && 95 <= __GNUC_MINOR__))
+# if defined restrict || 199901L <= __STDC_VERSION__
+# define __restrict restrict
+# else
+# define __restrict
+# endif
+# endif
+#endif
+
#ifndef __error_t_defined
typedef int error_t;
# define __error_t_defined