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-rw-r--r--include/stdarg.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/include/stdarg.h b/include/stdarg.h
index bc07813..9a8fb99 100644
--- a/include/stdarg.h
+++ b/include/stdarg.h
@@ -22,6 +22,14 @@
#include <slibc/version.h>
#include <slibc/features.h>
+#if !defined(_SLIBC_SUPPRESS_WARNINGS)
+# if !defined(__C89__)
+# warning "<stdargs.h> requires that C89 or newer revision is used."
+# elif !defined(__C99__)
+# warning "'va_copy' was introduced to <stdargs.h> in C99."
+# endif
+#endif
+
#include <bits/stdarg.h>