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cppinit.c (cpp_post_options): If preprocessed, turn off traditional.

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* cppinit.c (cpp_post_options): If preprocessed, turn off
	traditional.  If traditional, turn off column numbers.
	* cpplib.c (cpp_push_buffer): Lex from stage 3 if traditional.
	* cpptrad.c (handle_newline): Update line_base.
	(skip_comment): Handle -Wcomment.

From-SVN: r53582
This commit is contained in:
Neil Booth 2002-05-18 08:23:20 +00:00 committed by Neil Booth
parent c810846eb0
commit 43612ffb67
4 changed files with 39 additions and 22 deletions
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8
gcc/ChangeLog
View File

@ -1,3 +1,11 @@
2002-05-18 Neil Booth <neil@daikokuya.demon.co.uk>
* cppinit.c (cpp_post_options): If preprocessed, turn off
traditional. If traditional, turn off column numbers.
* cpplib.c (cpp_push_buffer): Lex from stage 3 if traditional.
* cpptrad.c (handle_newline): Update line_base.
(skip_comment): Handle -Wcomment.
2002-05-17 Zack Weinberg <zack@codesourcery.com>
* cppinit.c (struct builtin): Remove unused fields.

11
gcc/cppinit.c
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@ -1774,9 +1774,16 @@ cpp_post_options (pfile)
CPP_OPTION (pfile, warn_traditional) = 0;
/* Permanently disable macro expansion if we are rescanning
preprocessed text. */
preprocessed text. Read preprocesed source in ISO mode. */
if (CPP_OPTION (pfile, preprocessed))
pfile->state.prevent_expansion = 1;
{
pfile->state.prevent_expansion = 1;
CPP_OPTION (pfile, traditional) = 0;
}
/* Traditional CPP does not accurately track column information. */
if (CPP_OPTION (pfile, traditional))
CPP_OPTION (pfile, show_column) = 0;
/* -dM makes no normal output. This is set here so that -dM -dD
works as expected. */

2
gcc/cpplib.c
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@ -1881,7 +1881,7 @@ cpp_push_buffer (pfile, buffer, len, from_stage3, return_at_eof)
new->line_base = new->buf = new->cur = buffer;
new->rlimit = buffer + len;
new->from_stage3 = from_stage3;
new->from_stage3 = from_stage3 || CPP_OPTION (pfile, traditional);
new->prev = pfile->buffer;
new->return_at_eof = return_at_eof;
new->saved_flags = BOL;

40
gcc/cpptrad.c
View File

@ -21,9 +21,9 @@ Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include "cpplib.h"
#include "cpphash.h"
/* Lexing TODO: Handle -Wcomment, -C, maybe -CC, and space in escaped
newlines. Stop cpplex.c from recognizing comments, trigraphs and
directives during its lexing pass. */
/* Lexing TODO: Handle -C, maybe -CC, and space in escaped newlines.
Stop cpplex.c from recognizing comments and directives during its
lexing pass. */
static const uchar *handle_newline PARAMS ((cpp_reader *, const uchar *));
static const uchar *skip_escaped_newlines PARAMS ((cpp_reader *,
@ -64,6 +64,7 @@ handle_newline (pfile, cur)
pfile->line++;
if (cur[0] + cur[1] == '\r' + '\n')
cur++;
pfile->buffer->line_base = cur + 1;
return cur + 1;
}
@ -89,30 +90,31 @@ skip_comment (pfile, cur)
const uchar *cur;
{
unsigned int from_line = pfile->line;
unsigned int c = 0, prevc;
const uchar *limit = pfile->buffer->rlimit;
for (;;)
while (cur < limit)
{
unsigned int c = *cur++;
if (c == '*')
prevc = c;
c = *cur++;
if (c == '/')
{
cur = skip_escaped_newlines (pfile, cur);
if (*cur == '/')
{
cur++;
break;
}
if (prevc == '*')
break;
if (*cur == '*' && cur[1] != '/'
&& CPP_OPTION (pfile, warn_comments))
cpp_error_with_line (pfile, DL_WARNING, pfile->line, 0,
"\"/*\" within comment");
}
else if (is_vspace (c))
cur = handle_newline (pfile, cur - 1);
else if (c == '\0' && cur - 1 == pfile->buffer->rlimit)
{
cur--;
cpp_error_with_line (pfile, DL_ERROR, from_line, 0,
"unterminated comment");
break;
}
}
if (c != '/' || prevc != '*')
cpp_error_with_line (pfile, DL_ERROR, from_line, 0,
"unterminated comment");
return cur;
}