patch 7.4.2081
Problem:    Line numbers in the error list are not always adjusted.
Solution:   Set b_has_qf_entry properly. (Yegappan Lakshmanan)
diff --git a/src/quickfix.c b/src/quickfix.c
index fecc2c9..51f96dc 100644
--- a/src/quickfix.c
+++ b/src/quickfix.c
@@ -1408,7 +1408,8 @@
 
 	qfp->qf_fnum = bufnum;
 	if (buf != NULL)
-	    buf->b_has_qf_entry = TRUE;
+	    buf->b_has_qf_entry |=
+		(qi == &ql_info) ? BUF_HAS_QF_ENTRY : BUF_HAS_LL_ENTRY;
     }
     else
 	qfp->qf_fnum = qf_get_fnum(qi, dir, fname);
@@ -1680,7 +1681,8 @@
     if (buf == NULL)
 	return 0;
 
-    buf->b_has_qf_entry = TRUE;
+    buf->b_has_qf_entry =
+			(qi == &ql_info) ? BUF_HAS_QF_ENTRY : BUF_HAS_LL_ENTRY;
     return buf->b_fnum;
 }
 
@@ -2728,8 +2730,9 @@
     int		idx;
     qf_info_T	*qi = &ql_info;
     int		found_one = FALSE;
+    int		buf_has_flag = wp == NULL ? BUF_HAS_QF_ENTRY : BUF_HAS_LL_ENTRY;
 
-    if (!curbuf->b_has_qf_entry)
+    if (!(curbuf->b_has_qf_entry & buf_has_flag))
 	return;
     if (wp != NULL)
     {
@@ -2758,7 +2761,7 @@
 		}
 
     if (!found_one)
-	curbuf->b_has_qf_entry = FALSE;
+	curbuf->b_has_qf_entry &= ~buf_has_flag;
 }
 
 /*