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files.c (_cpp_stack_include): Fix the highest_location when header file is guarded by #ifndef and is included...

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2013-06-24  Dehao Chen  <dehao@google.com>

	* files.c (_cpp_stack_include): Fix the highest_location when header
	file is guarded by #ifndef and is included twice.

From-SVN: r200376
This commit is contained in:
Dehao Chen 2013-06-24 17:31:45 +00:00 • committed by Dehao Chen
parent b4005c71a2
commit 39953c7972
2 changed files with 22 additions and 9 deletions
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5
libcpp/ChangeLog
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@ -1,3 +1,8 @@
2013-06-24 Dehao Chen <dehao@google.com>
* files.c (_cpp_stack_include): Fix the highest_location when header
file is guarded by #ifndef and is included twice.
2013-04-28 Jakub Jelinek <jakub@redhat.com>
N3472 binary constants

26
libcpp/files.c
View file

@ -983,6 +983,7 @@ _cpp_stack_include (cpp_reader *pfile, const char *fname, int angle_brackets,
{
struct cpp_dir *dir;
_cpp_file *file;
bool stacked;
dir = search_path_head (pfile, fname, angle_brackets, type);
if (!dir)
@ -993,19 +994,26 @@ _cpp_stack_include (cpp_reader *pfile, const char *fname, int angle_brackets,
if (type == IT_DEFAULT && file == NULL)
return false;
/* Compensate for the increment in linemap_add that occurs in
_cpp_stack_file. In the case of a normal #include, we're
currently at the start of the line *following* the #include. A
separate source_location for this location makes no sense (until
we do the LC_LEAVE), and complicates LAST_SOURCE_LINE_LOCATION.
This does not apply if we found a PCH file (in which case
linemap_add is not called) or we were included from the
command-line. */
/* Compensate for the increment in linemap_add that occurs if
_cpp_stack_file actually stacks the file. In the case of a
normal #include, we're currently at the start of the line
*following* the #include. A separate source_location for this
location makes no sense (until we do the LC_LEAVE), and
complicates LAST_SOURCE_LINE_LOCATION. This does not apply if we
found a PCH file (in which case linemap_add is not called) or we
were included from the command-line. */
if (file->pchname == NULL && file->err_no == 0
&& type != IT_CMDLINE && type != IT_DEFAULT)
pfile->line_table->highest_location--;
return _cpp_stack_file (pfile, file, type == IT_IMPORT);
stacked = _cpp_stack_file (pfile, file, type == IT_IMPORT);
if (!stacked)
/* _cpp_stack_file didn't stack the file, so let's rollback the
compensation dance we performed above. */
pfile->line_table->highest_location++;
return stacked;
}
/* Could not open FILE. The complication is dependency output. */