1 files changed, 6 insertions, 1 deletions
diff --git a/source/blender/blenloader/intern/writefile.c b/source/blender/blenloader/intern/writefile.c
index 46ac6b43c92..0d1c3f2c3e5 100644
--- a/source/blender/blenloader/intern/writefile.c
+++ b/source/blender/blenloader/intern/writefile.c
@@ -2497,7 +2497,12 @@ static void write_lightcache_texture(BlendWriter *writer, LightCacheTexture *tex
     else if (tex->data_type == LIGHTCACHETEX_UINT) {
       data_size *= sizeof(uint);
     }
-    BLO_write_raw(writer, data_size, tex->data);
+
+    /* FIXME: We can't save more than what 32bit systems can handle.
+     * The solution would be to split the texture but it is too late for 2.90. (see T78529) */
+    if (data_size < INT_MAX) {
+      BLO_write_raw(writer, data_size, tex->data);
+    }
   }
 }