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-rw-r--r--string/strings.h8
1 files changed, 6 insertions, 2 deletions
diff --git a/string/strings.h b/string/strings.h
index dad0a04..0d2b5bf 100644
--- a/string/strings.h
+++ b/string/strings.h
@@ -27,8 +27,12 @@
# define __need_size_t
# include <stddef.h>
-/* Tell the caller that we provide correct C++ prototypes. */
-# if defined __cplusplus && __GNUC_PREREQ (4, 4)
+/* Provide correct C++ prototypes, and indicate this to the caller. This
+ requires a compatible C++ standard library. As a heuristic, we provide
+ these when the compiler indicates full conformance with C++98 or later,
+ and for older GCC versions that are known to provide a compatible
+ libstdc++. */
+# if defined __cplusplus && (__cplusplus >= 199711L || __GNUC_PREREQ (4, 4))
# define __CORRECT_ISO_CPP_STRINGS_H_PROTO
# endif