gentoo-overlay/sys-devel/m4/files/m4-1.4.16-fix-test-readlink.patch

--- tests/test-readlink.h
+++ tests/test-readlink.h
@@ -38,7 +38,7 @@
   ASSERT (errno == ENOENT);
   errno = 0;
   ASSERT (func ("", buf, sizeof buf) == -1);
-  ASSERT (errno == ENOENT);
+  ASSERT (errno == ENOENT || errno == EINVAL);
   errno = 0;
   ASSERT (func (".", buf, sizeof buf) == -1);
   ASSERT (errno == EINVAL);