commit https://github.com/vim/vim/commit/c1542744e788d96fed24dd421f43009288092504 Author: Bram Moolenaar <Bram@vim.org> Date: Wed Jul 20 21:44:37 2016 +0200 patch 7.4.2081 Problem: Line numbers in the error list are not always adjusted. Solution: Set b_has_qf_entry properly. (Yegappan Lakshmanan)

--- a/src/structs.h
+++ b/src/structs.h
@@ -1906,6 +1906,8 @@ struct file_buffer
 #ifdef FEAT_QUICKFIX
     char_u	*b_p_bh;	/* 'bufhidden' */
     char_u	*b_p_bt;	/* 'buftype' */
+#define BUF_HAS_QF_ENTRY 1
+#define BUF_HAS_LL_ENTRY 2
     int		b_has_qf_entry;
 #endif
     int		b_p_bl;		/* 'buflisted' */