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author | dodji <dodji@138bc75d-0d04-0410-961f-82ee72b054a4> | 2014-07-16 10:33:27 +0000 |
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committer | dodji <dodji@138bc75d-0d04-0410-961f-82ee72b054a4> | 2014-07-16 10:33:27 +0000 |
commit | a4cfdfed6839584bcde0c2c884e3dd55476adaa3 (patch) | |
tree | 2b9dadc35640ecec96428e5e73e233c98df2477d /gcc/input.c | |
parent | c4884451cad7af65335e5a3dfbd99a75a50110e7 (diff) | |
download | gcc-a4cfdfed6839584bcde0c2c884e3dd55476adaa3.tar.gz |
Support location tracking for built-in macro tokens
When a built-in macro is expanded, the location of the token in the
epansion list is the location of the expansion point of the built-in
macro.
This patch creates a virtual location for that token instead,
effectively tracking locations of tokens resulting from built-in macro
tokens.
libcpp/
* include/line-map.h (line_maps::builtin_location): New data
member.
(line_map_init): Add a new parameter to initialize the new
line_maps::builtin_location data member.
* line-map.c (linemap_init): Initialize the
line_maps::builtin_location data member.
* macro.c (builtin_macro): Create a macro map and track the token
resulting from the expansion of a built-in macro.
gcc/
* input.h (is_location_from_builtin_token): New function
declaration.
* input.c (is_location_from_builtin_token): New function
definition.
* toplev.c (general_init): Tell libcpp what the pre-defined
spelling location for built-in tokens is.
Signed-off-by: Dodji Seketeli <dodji@redhat.com>
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@212637 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/input.c')
-rw-r--r-- | gcc/input.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/gcc/input.c b/gcc/input.c index 63cd062ec5b..f3fd0e9d755 100644 --- a/gcc/input.c +++ b/gcc/input.c @@ -713,6 +713,22 @@ location_get_source_line (expanded_location xloc, return read ? buffer : NULL; } +/* Test if the location originates from the spelling location of a + builtin-tokens. That is, return TRUE if LOC is a (possibly + virtual) location of a built-in token that appears in the expansion + list of a macro. Please note that this function also works on + tokens that result from built-in tokens. For instance, the + function would return true if passed a token "4" that is the result + of the expansion of the built-in __LINE__ macro. */ +bool +is_location_from_builtin_token (source_location loc) +{ + const line_map *map = NULL; + loc = linemap_resolve_location (line_table, loc, + LRK_SPELLING_LOCATION, &map); + return loc == BUILTINS_LOCATION; +} + /* Expand the source location LOC into a human readable location. If LOC is virtual, it resolves to the expansion point of the involved macro. If LOC resolves to a builtin location, the file name of the |