[hurd,commited] hurd: Fix tst-writev test

[Samuel Thibault]

There is no compile-time IOV_MAX constraint on GNU/Hurd
---
 sysdeps/wordsize-64/tst-writev.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/sysdeps/wordsize-64/tst-writev.c b/sysdeps/wordsize-64/tst-writev.c
index 3736f2bfb0..ffdd5e69c3 100644
--- a/sysdeps/wordsize-64/tst-writev.c
+++ b/sysdeps/wordsize-64/tst-writev.c
@@ -24,6 +24,11 @@
 #include <unistd.h>
 #include <sys/uio.h>
 
+/* GNU/Hurd does not define a IOV_MAX constraint.  */
+#ifndef IOV_MAX
+# define IOV_MAX 1024
+#endif
+
 
 /* The purpose of this test is to verify that the INTERNAL_[V]SYSCALL_NCS
    macros on 64-bit platforms don't cast the return type to (int) which would
-- 
2.39.2