XEmacs 21.2.43 "Terspichore".

[chise/xemacs-chise.git.1] / src / s / aix4.h

diff --git a/src/s/aix4.h b/src/s/aix4.h
index bb3a15d..adf3195 100644 (file)
--- a/src/s/aix4.h
+++ b/src/s/aix4.h
@@ -11,15 +11,6 @@
 /* AIX is happier when bzero and strcasecmp are declared */
 #include "strings.h"
 
-/* AIX 4.2's sys/mman.h doesn't seem to define MAP_FAILED,
-   although Unix98 claims it must. */
-#ifdef HAVE_MMAP
-#include <sys/mman.h>
-# ifndef MAP_FAILED
-#  define MAP_FAILED ((void *) -1)
-# endif
-#endif
-
 /* Forward declarations for xlc warning suppressions */
 struct ether_addr;
 struct sockaddr_dl;
@@ -30,3 +21,12 @@ struct sockaddr_dl;
    -- Mike Sperber <mike@xemacs.org> */
 
 #undef HAVE_GETADDRINFO
+
+#ifdef __xlC__
+/* IBM's C compiler miscompiles this function.  From IBM's docs:
+   -qstrict turns off the following optimizations:
+
+   Performing code motion and scheduling on computations such as loads
+   and floating-point computations that may trigger an exception. */
+#pragma option_override (bytecount_to_charcount, "opt(strict,yes)")
+#endif /* IBM's C compiler */