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re PR preprocessor/36674 (#include location is offset by one row in errors from preprocessed files)

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2009-05-14  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>

	PR cpp/36674
libcpp/
	* directives (do_linemarker): Compensate for the increment in
	location that occurs when we reach the end of line.
	* files (_cpp_stack_include): Mention _cpp_find_file in the
	comment.
testsuite/
	* gcc.dg/cpp/pr36674.i: New.

From-SVN: r147504
This commit is contained in:
Manuel López-Ibáñez 2009-05-13 23:17:55 +00:00
parent f06257d36a
commit 00b0c19b4b
5 changed files with 41 additions and 7 deletions
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15
libcpp/files.c
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@ -912,13 +912,14 @@ _cpp_stack_include (cpp_reader *pfile, const char *fname, int angle_brackets,
file = _cpp_find_file (pfile, fname, dir, false, angle_brackets);
/* Compensate for the increment in linemap_add. 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 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. */
if (file->pchname == NULL && file->err_no == 0 && type != IT_CMDLINE)
pfile->line_table->highest_location--;