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| author | bothner <bothner@138bc75d-0d04-0410-961f-82ee72b054a4> | 2005-04-21 17:08:27 +0000 |
|---|---|---|
| committer | bothner <bothner@138bc75d-0d04-0410-961f-82ee72b054a4> | 2005-04-21 17:08:27 +0000 |
| commit | 0b7f838f424378c4813af7042b8be1a1a5201855 (patch) | |
| tree | b15d8e7557f1913eb0160b3519aa2094cc02bc47 /libcpp/line-map.c | |
| parent | dea55b965e6d9797591ae1cf17a71c92d691cb1c (diff) | |
| download | gcc-0b7f838f424378c4813af7042b8be1a1a5201855.tar.gz | |
PR preprocessor/20907
* line-map.c (linemap_line_start): Fix bug when we need to increse
column_bits but can re-use the current line_map.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@98515 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'libcpp/line-map.c')
| -rw-r--r-- | libcpp/line-map.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/libcpp/line-map.c b/libcpp/line-map.c index e6dd48df756..1ace4c9585d 100644 --- a/libcpp/line-map.c +++ b/libcpp/line-map.c @@ -199,6 +199,8 @@ linemap_line_start (struct line_maps *set, unsigned int to_line, int column_bits; if (max_column_hint > 100000 || highest > 0xC0000000) { + /* If the column number is ridiculous or we've allocated a huge + number of source_locations, give up on column numbers. */ max_column_hint = 0; if (highest >0xF0000000) return 0; @@ -211,13 +213,15 @@ linemap_line_start (struct line_maps *set, unsigned int to_line, column_bits++; max_column_hint = 1U << column_bits; } + /* Allocate the new line_map. However, if the current map only has a + single line we can sometimes just increase its column_bits instead. */ if (line_delta < 0 || last_line != map->to_line || SOURCE_COLUMN (map, highest) >= (1U << column_bits)) map = (struct line_map*) linemap_add (set, LC_RENAME, map->sysp, map->to_file, to_line); map->column_bits = column_bits; - r = map->start_location; + r = map->start_location + ((to_line - map->to_line) << column_bits); } else r = highest - SOURCE_COLUMN (map, highest) |