diff --git a/libcpp/ChangeLog b/libcpp/ChangeLog
index 8af9846d7fb..fa2fa7d97e8 100644
--- a/libcpp/ChangeLog
+++ b/libcpp/ChangeLog
@@ -1,3 +1,9 @@
+2019-02-18  Martin Liska  <mliska@suse.cz>
+
+	PR c++/89383
+	* line-map.c (linemap_line_start): Use 1UL in order
+	to not overflow.
+
 2019-02-11  Martin Liska  <mliska@suse.cz>
 
 	PR lto/88147
diff --git a/libcpp/line-map.c b/libcpp/line-map.c
index 0e30b4b2b39..b73f5067c24 100644
--- a/libcpp/line-map.c
+++ b/libcpp/line-map.c
@@ -745,7 +745,8 @@ linemap_line_start (struct line_maps *set, linenum_type to_line,
 	  || ( /* We can't reuse the map if the line offset is sufficiently
 		  large to cause overflow when computing location_t values.  */
 	      (to_line - ORDINARY_MAP_STARTING_LINE_NUMBER (map))
-	      >= (1U << (CHAR_BIT * sizeof (linenum_type) - column_bits)))
+	      >= (((uint64_t) 1)
+		  << (CHAR_BIT * sizeof (linenum_type) - column_bits)))
 	  || range_bits < map->m_range_bits)
 	map = linemap_check_ordinary
 	        (const_cast <line_map *>