objcopy --strip-symbols and similar with file arg

If something like --strip-symbols /dev/urandom is passed to objcopy
we get a -1 return from get_file_size which isn't checked.  Things go
downhill from there.

From https://lists.gnu.org/archive/html/bug-binutils/2026-08/msg00083.html

	* objcopy.c (add_specific_symbols): Fail on negative return
	from get_file_size.

diff --git a/binutils/objcopy.c b/binutils/objcopy.c
index 4ab7e8997b5..609bb311a9a 100644
--- a/binutils/objcopy.c
+++ b/binutils/objcopy.c
@@ -1134,7 +1134,7 @@ add_specific_symbols (const char *filename, htab_t htab, char **buffer_p)
   unsigned int line_count;
 
   size = get_file_size (filename);
-  if (size == 0)
+  if (size < 1)
     {
       status = 1;
       return;

-- 
Alan Modra