On Mon, Feb 27, 2023 at 05:50:51PM +0100, Stefano Brivio wrote:
ia64 needs to use __clone2() as clone() is not
available, but glibc
doesn't export the prototype. Take it from clone(2) to avoid an
implicit declaration:
util.c: In function ‘do_clone’:
util.c:512:16: warning: implicit declaration of function ‘__clone2’
[-Wimplicit-function-declaration]
512 | return __clone2(fn, stack_area + stack_size / 2, stack_size / 2,
| ^~~~~~~~
Signed-off-by: Stefano Brivio <sbrivio(a)redhat.com>
Reviewed-by: David Gibson <david(a)gibson.dropbear.id.au>
---
util.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/util.c b/util.c
index c5ee1c0..799173f 100644
--- a/util.c
+++ b/util.c
@@ -495,6 +495,15 @@ int write_file(const char *path, const char *buf)
return len == 0 ? 0 : -1;
}
+#ifdef __ia64__
+/* Needed by do_clone() below: glibc doesn't export the prototype of __clone2(),
+ * use the description from clone(2).
+ */
+int __clone2(int (*fn)(void *), void *stack_base, size_t stack_size, int flags,
+ void *arg, ... /* pid_t *parent_tid, struct user_desc *tls,
+ pid_t *child_tid */ );
+#endif
+
/**
* do_clone() - Wrapper of __clone2() for ia64, clone() for other architectures
* @fn: Entry point for child
--
David Gibson | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_
| _way_ _around_!
http://www.ozlabs.org/~dgibson