ntdll: Fix backward compatibility for struct link_map on FreeBSD.

Checking for the _rtld_version_laddr_offset symbol only works when header and library versions match. Checking for the offset of l_addr instead lets us use the older header with the new library too. Signed-off-by: Damjan Jovanovic <damjan.jov@gmail.com> Signed-off-by: Alexandre Julliard <julliard@winehq.org>

ntdll: Fix backward compatibility for struct link_map on FreeBSD.
6d829f2b · Damjan Jovanovic · Alexandre Julliard · 50650d6e · 6d829f2b
Commit 6d829f2b authored Nov 30, 2020 by Damjan Jovanovic Committed by Alexandre Julliard Nov 30, 2020
Hide whitespace changes
Inline Side-by-side

Showing with 1 addition and 1 deletion

loader.c dlls/ntdll/unix/loader.c +1 -1

No files found.
--- a/dlls/ntdll/unix/loader.c
+++ b/dlls/ntdll/unix/loader.c
@@ -1417,7 +1417,7 @@ found:

 #ifdef __FreeBSD__
        /* On older FreeBSD versions, l_addr was the absolute load address, now it's the relocation offset. */
-        if (!dlsym(RTLD_DEFAULT, "_rtld_version_laddr_offset"))
+        if (offsetof(struct link_map, l_addr) == 0)
            if (!get_relocbase(map->l_addr, &relocbase)) return;
 #endif
        switch (dyn->d_tag)