**** Contexts
****/
-#ifdef HAVE_UCONTEXT_H
-# include <ucontext.h>
-#else
+#ifdef USE_UCONTEXT
+# ifndef S_SPLINT_S /* This header drives splint into the wall */
+# include <ucontext.h>
+# endif
+#endif
+
+#ifdef _WIN32
# include "xbt/context_win32.h" /* Manual reimplementation for prehistoric platforms */
#endif
+/**
+ ** What is needed to protect solaris's printf from ever seing NULL associated to a %s format
+ ** (without adding an extra check on linux :)
+ **/
+
+#ifdef PRINTF_NULL_WORKING
+# define PRINTF_STR(a) (a)
+#else
+# define PRINTF_STR(a) (a)?:"(null)"
+#endif
+
#endif /* GRAS_PORTABLE_H */