https://bugs.gentoo.org/970705
https://github.com/file/file/commit/c54605718190ad8fe9c25cb475f1f32ca7cd54f7

From c54605718190ad8fe9c25cb475f1f32ca7cd54f7 Mon Sep 17 00:00:00 2001
From: Christos Zoulas <christos@zoulas.com>
Date: Sun, 12 Apr 2026 22:15:14 +0000
Subject: [PATCH] PR/725: inliniac: Revert previous and always set offset.

--- a/src/softmagic.c
+++ b/src/softmagic.c
@@ -1577,8 +1577,7 @@ msetoffset(struct magic_set *ms, struct magic *m, struct buffer *bb,
 			ms->offset = offset;
 			ms->eoffset = 0;
 		} else {
-			if (b->fd != -1)
-				ms->offset = ms->eoffset + offset;
+			ms->offset = ms->eoffset + offset;
 		}
 	}
 	if ((ms->flags & MAGIC_DEBUG) != 0) {