From: bothner Date: Thu, 21 Apr 2005 17:08:27 +0000 (+0000) Subject: PR preprocessor/20907 X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=0b7f838f424378c4813af7042b8be1a1a5201855;p=thirdparty%2Fgcc.git 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 --- diff --git a/libcpp/ChangeLog b/libcpp/ChangeLog index 7050d65189ef..1a8fccf5ce11 100644 --- a/libcpp/ChangeLog +++ b/libcpp/ChangeLog @@ -1,3 +1,9 @@ +2005-04-19 Per Bothner + + 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. + 2005-04-19 Kaveh R. Ghazi * system.h (fopen, fdopen, freopen): Define these to the unlocked diff --git a/libcpp/line-map.c b/libcpp/line-map.c index e6dd48df7562..1ace4c9585d1 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)