From 002b88cf581fb91d29865485d7763e9ac635909a Mon Sep 17 00:00:00 2001
From: Reini Urban <rurban@cpan.org>
Date: Sat, 21 Oct 2023 10:52:34 +0200
Subject: [PATCH] decode: improve Invalid preview_size error

with to/r13/from_autocad_r13/ROBOT.DWG. check against the obj->size
not some hardcoded too low limit.

But now this file fail with out of memory on outjson
---
 src/common_entity_data.spec | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/common_entity_data.spec b/src/common_entity_data.spec
index 88b094864c..7e0ff67050 100644
--- a/src/common_entity_data.spec
+++ b/src/common_entity_data.spec
@@ -321,7 +321,7 @@
             FIELD_BLL (preview_size, 160);
           }
 #endif
-        if ((long)_ent->preview_size >= 0 && _ent->preview_size < 210210)
+        if ((long)_ent->preview_size >= 0 && _ent->preview_size < obj->size)
           {
             FIELD_BINARY (preview, _ent->preview_size, 310);
           }