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cppfiles.c (find_position): Drop 'colp' argument, return the new line base.

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* cppfiles.c (find_position): Drop 'colp' argument, return the
	new line base.
	(read_and_prescan): Adjust to match.  Don't ever manipulate
	line or line_base except via find_position.

From-SVN: r31700
This commit is contained in:
Zack Weinberg 2000-01-30 18:09:07 +00:00 committed by Zack Weinberg
parent bb4cd70830
commit a73ac7a568
3 changed files with 53 additions and 29 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2000-01-30 Zack Weinberg <zack@wolery.cumb.org>
* cppfiles.c (find_position): Drop 'colp' argument, return the
new line base.
(read_and_prescan): Adjust to match. Don't ever manipulate
line or line_base except via find_position.
2000-01-29 Zack Weinberg <zack@wolery.cumb.org>
* c-parse.in: Apply Ulrich's changes from c-parse.y.

60
gcc/cppfiles.c
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@ -34,23 +34,22 @@ Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
static struct include_hash *redundant_include_p
PARAMS ((cpp_reader *,
struct include_hash *,
struct file_name_list *));
static struct file_name_map *read_name_map PARAMS ((cpp_reader *,
const char *));
struct include_hash *,
struct file_name_list *));
static struct file_name_map *read_name_map
PARAMS ((cpp_reader *, const char *));
static char *read_filename_string PARAMS ((int, FILE *));
static char *remap_filename PARAMS ((cpp_reader *, char *,
struct file_name_list *));
struct file_name_list *));
static long read_and_prescan PARAMS ((cpp_reader *, cpp_buffer *,
int, size_t));
static struct file_name_list *actual_directory PARAMS ((cpp_reader *,
const char *));
int, size_t));
static struct file_name_list *actual_directory
PARAMS ((cpp_reader *, const char *));
static void initialize_input_buffer PARAMS ((cpp_reader *, int,
struct stat *));
struct stat *));
static int file_cleanup PARAMS ((cpp_buffer *, cpp_reader *));
static void find_position PARAMS ((U_CHAR *, U_CHAR *,
unsigned long *,
unsigned long *));
static U_CHAR *find_position PARAMS ((U_CHAR *, U_CHAR *,
unsigned long *));
#if 0
static void hack_vms_include_specification PARAMS ((char *));
@ -772,23 +771,25 @@ actual_directory (pfile, fname)
}
/* Determine the current line and column. Used only by read_and_prescan. */
static void
find_position (start, limit, linep, colp)
static U_CHAR *
find_position (start, limit, linep)
U_CHAR *start;
U_CHAR *limit;
unsigned long *linep;
unsigned long *colp;
{
unsigned long line = *linep, col = 0;
unsigned long line = *linep;
U_CHAR *lbase = start;
while (start < limit)
{
U_CHAR ch = *start++;
if (ch == '\n' || ch == '\r')
line++, col = 1;
else
col++;
{
line++;
lbase = start;
}
}
*linep = line, *colp = col;
*linep = line;
return lbase;
}
/* Read the entire contents of file DESC into buffer BUF. LEN is how
@ -950,8 +951,6 @@ read_and_prescan (pfile, fp, desc, len)
*op++ = '\r';
else
deferred_newlines++;
line++;
line_base = op;
}
else if (*ip == '\r')
{
@ -967,8 +966,6 @@ read_and_prescan (pfile, fp, desc, len)
*op++ = '\r';
else
deferred_newlines++;
line++;
line_base = op;
}
else
*op++ = '\\';
@ -1023,10 +1020,14 @@ read_and_prescan (pfile, fp, desc, len)
if (CPP_OPTIONS (pfile)->warn_trigraphs)
{
unsigned long col;
find_position (line_base, op, &line, &col);
line_base = op - col;
cpp_warning_with_line (pfile, line, col,
"trigraph ??%c encountered", d);
line_base = find_position (line_base, op, &line);
col = op - line_base + 1;
if (CPP_OPTIONS (pfile)->trigraphs)
cpp_warning_with_line (pfile, line, col,
"trigraph ??%c converted to %c", d, t);
else
cpp_warning_with_line (pfile, line, col,
"trigraph ??%c ignored", d);
}
if (CPP_OPTIONS (pfile)->trigraphs)
{
@ -1075,7 +1076,8 @@ read_and_prescan (pfile, fp, desc, len)
if (op[-1] != '\n')
{
unsigned long col;
find_position (line_base, op, &line, &col);
line_base = find_position (line_base, op, &line);
col = op - line_base + 1;
cpp_warning_with_line (pfile, line, col, "no newline at end of file\n");
if (offset + 1 > len)
{

15
gcc/testsuite/gcc.dg/20000129-1.c Normal file
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@ -0,0 +1,15 @@
/* Regression test for trigraph warnings. Under certain conditions we
got the line numbers wrong.
Originally exposed by XEmacs and reported by Martin Buchholz
<martin@xemacs.org>; this test case is synthetic. */
/* { dg-do preprocess } */
/* { dg-options -Wall } */
#define some_macro \
blah \
blah \
blah \
blah
??> /* { dg-warning "trigraph ..." "trigraph encountered" } */