Eliminate runtime function pointer mods in autotools checks

[zfs.git] / config / kernel-bio-end-io-t-args.m4

diff --git a/config/kernel-bio-end-io-t-args.m4 b/config/kernel-bio-end-io-t-args.m4
index 44e4826..407e55c 100644 (file)
--- a/config/kernel-bio-end-io-t-args.m4
+++ b/config/kernel-bio-end-io-t-args.m4
@@ -11,11 +11,11 @@ AC_DEFUN([ZFS_AC_KERNEL_BIO_END_IO_T_ARGS], [
        AC_MSG_CHECKING([whether bio_end_io_t wants 2 args])
        ZFS_LINUX_TRY_COMPILE([
                #include <linux/bio.h>
-       ],[
-               void (*wanted_end_io)(struct bio *, int) = NULL;
-               bio_end_io_t *local_end_io __attribute__ ((unused));
 
-               local_end_io = wanted_end_io;
+               void wanted_end_io(struct bio *bio, int x) { return; }
+
+               bio_end_io_t *end_io __attribute__ ((unused)) = wanted_end_io;
+       ],[
        ],[
                AC_MSG_RESULT(yes)
                AC_DEFINE(HAVE_2ARGS_BIO_END_IO_T, 1,