fix sendmmsg emulation return value for zero-length vector

[musl] / src / errno / __errno_location.c

diff --git a/src/errno/__errno_location.c b/src/errno/__errno_location.c
index a018578..49654ef 100644 (file)
--- a/src/errno/__errno_location.c
+++ b/src/errno/__errno_location.c
@@ -1,9 +1,8 @@
-#include <errno.h>
-#include "libc.h"
+#include "pthread_impl.h"
 
 int *__errno_location(void)
 {
        static int e;
-       if (libc.errno_location) return libc.errno_location();
+       if (libc.has_thread_pointer) return &__pthread_self()->errno_val;
        return &e;
 }