diff options
Diffstat (limited to 'gcc/line-map.c')
| -rw-r--r-- | gcc/line-map.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/gcc/line-map.c b/gcc/line-map.c index a67191d3aed..27bcf2f94cd 100644 --- a/gcc/line-map.c +++ b/gcc/line-map.c @@ -93,7 +93,10 @@ add_line_map (set, reason, from_line, to_file, to_line) return map; } -/* Translate a logical line number into a (source file, line) pair. */ +/* Given a logical line, returns the map from which the corresponding + (source file, line) pair can be deduced. Since the set is built + chronologically, the logical lines are monotonic increasing, and so + the list is sorted and we can use a binary search. */ struct line_map * lookup_line (set, line) |