diff options
Diffstat (limited to 'gcc/line-map.c')
| -rw-r--r-- | gcc/line-map.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/gcc/line-map.c b/gcc/line-map.c index 50c9c88..f04350d 100644 --- a/gcc/line-map.c +++ b/gcc/line-map.c @@ -61,11 +61,17 @@ linemap_free (struct line_maps *set) } /* Add a mapping of logical source line to physical source file and - line number. The text pointed to by TO_FILE must have a lifetime - at least as long as the final call to lookup_line (). + line number. + + The text pointed to by TO_FILE must have a lifetime + at least as long as the final call to lookup_line (). An empty + TO_FILE means standard input. If reason is LC_LEAVE, and + TO_FILE is NULL, then TO_FILE, TO_LINE and SYSP are given their + natural values considering the file we are returning to. FROM_LINE should be monotonic increasing across calls to this - function. */ + function. A call to this function can relocate the previous set of + maps, so any stored line_map pointers should not be used. */ const struct line_map * linemap_add (struct line_maps *set, enum lc_reason reason, @@ -85,6 +91,9 @@ linemap_add (struct line_maps *set, enum lc_reason reason, map = &set->maps[set->used++]; + if (to_file && *to_file == '\0') + to_file = "<stdin>"; + /* If we don't keep our line maps consistent, we can easily segfault. Don't rely on the client to do it for us. */ if (set->depth == 0) |