AIX xlc has to have strict aliasing turned off. If not, the optimizer

assumes that pointers can only point to an object of the same type.
2007-02-07 17:34:30 +00:00
parent 6647ca6ec5
commit 4ab91a93e8
1 changed files with 4 additions and 0 deletions
--- a/configure.ac
+++ b/configure.ac
@@ -1459,6 +1459,10 @@ if test "x$RECENTAIX" = "xyes"; then
         XLC="yes"
         AC_MSG_RESULT([yes])
         CFLAGS="$CFLAGS -qthreaded"
+         dnl AIX xlc has to have strict aliasing turned off. If not,
+         dnl the optimizer assumes that pointers can only point to
+         dnl an object of the same type.
+         CFLAGS="$CFLAGS -qnoansialias"
       )