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cpplib.c: Don't include signal.h, sys/times.h, or sys/resource.h.

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1999-01-25 14:10 -0500  Zack Weinberg  <zack@rabi.phys.columbia.edu>
	* cpplib.c: Don't include signal.h, sys/times.h, or
	sys/resource.h. Don't declare localtime.
	(macroexpand): Handle special symbols here.
	(push_macro_expansion): Chop off the trailing '@ ' if possible
	here.
	(cpp_get_token): Don't do either of the above two things here.
	Move `string' label just after case '"' so that wide strings
	don't crash the preprocessor.

From-SVN: r24858
This commit is contained in:
Zack Weinberg 1999-01-25 11:23:01 +00:00 committed by Dave Brolley
parent 1b18747f2e
commit 20dc736194
2 changed files with 46 additions and 55 deletions
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11
gcc/ChangeLog
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@ -1,3 +1,14 @@
1999-01-25 14:10 -0500 Zack Weinberg <zack@rabi.phys.columbia.edu>
* cpplib.c: Don't include signal.h, sys/times.h, or
sys/resource.h. Don't declare localtime.
(macroexpand): Handle special symbols here.
(push_macro_expansion): Chop off the trailing '@ ' if possible
here.
(cpp_get_token): Don't do either of the above two things here.
Move `string' label just after case '"' so that wide strings
don't crash the preprocessor.
Sun Jan 24 20:13:45 1999 David Edelsohn <edelsohn@mhpcc.edu>
* rs6000.md (left shift + set cr patterns): Add missing '#' to

90
gcc/cpplib.c
View File

@ -25,16 +25,6 @@ Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#define STDC_VALUE 1
#endif
#include <signal.h>
#ifdef HAVE_SYS_TIMES_H
#include <sys/times.h>
#endif
#ifdef HAVE_SYS_RESOURCE_H
# include <sys/resource.h>
#endif
#include "cpplib.h"
#include "cpphash.h"
#include "output.h"
@ -170,10 +160,7 @@ enum file_change_code {same_file, enter_file, leave_file};
/* External declarations. */
extern HOST_WIDE_INT cpp_parse_expr PARAMS ((cpp_reader *));
extern char *version_string;
extern struct tm *localtime ();
/* #include "file" looks in source file dir, then stack. */
/* #include <file> just looks in the stack. */
@ -2380,7 +2367,7 @@ macroexpand (pfile, hp)
HASHNODE *hp;
{
int nargs;
DEFINITION *defn = hp->value.defn;
DEFINITION *defn;
register U_CHAR *xbuf;
long start_line, start_column;
int xbuf_len;
@ -2403,10 +2390,23 @@ macroexpand (pfile, hp)
dump_single_macro (hp, pcp_outfile);
#endif
pfile->output_escapes++;
cpp_buf_line_and_col (cpp_file_buffer (pfile), &start_line, &start_column);
/* Check for and handle special symbols. */
if (hp->type != T_MACRO)
{
special_symbol (hp, pfile);
xbuf_len = CPP_WRITTEN (pfile) - old_written;
xbuf = (U_CHAR *) xmalloc (xbuf_len + 1);
CPP_SET_WRITTEN (pfile, old_written);
bcopy (CPP_PWRITTEN (pfile), xbuf, xbuf_len + 1);
push_macro_expansion (pfile, xbuf, xbuf_len, hp);
return;
}
defn = hp->value.defn;
nargs = defn->nargs;
pfile->output_escapes++;
if (nargs >= 0)
{
@ -2830,6 +2830,19 @@ push_macro_expansion (pfile, xbuf, xbuf_len, hp)
&& (is_idchar[xbuf[2]] || xbuf[2] == '(' || xbuf[2] == '\''
|| xbuf[2] == '\"'))
mbuf->cur += 2;
/* Likewise, avoid the extra space at the end of the macro expansion
if this is safe. (We can do a better job here since we can know
what the next char will be.) */
if (xbuf_len >= 3
&& mbuf->rlimit[-2] == '@'
&& mbuf->rlimit[-1] == ' ')
{
int c1 = mbuf->rlimit[-3];
int c2 = CPP_BUF_PEEK (CPP_PREV_BUFFER (CPP_BUFFER (pfile)));
if (c2 == EOF || ! unsafe_chars (c1, c2))
mbuf->rlimit -= 2;
}
}
/* Like cpp_get_token, except that it does not read past end-of-line.
@ -4145,12 +4158,12 @@ cpp_get_token (pfile)
case '\"':
case '\'':
string:
/* A single quoted string is treated like a double -- some
programs (e.g., troff) are perverse this way */
cpp_buf_line_and_col (cpp_file_buffer (pfile),
&start_line, &start_column);
old_written = CPP_WRITTEN (pfile);
string:
CPP_PUTC (pfile, c);
while (1)
{
@ -4163,11 +4176,7 @@ cpp_get_token (pfile)
boundary. This can happen naturally if -traditional.
Otherwise, only -D can make a macro with an unmatched
quote. */
cpp_buffer *next_buf
= CPP_PREV_BUFFER (CPP_BUFFER (pfile));
(*CPP_BUFFER (pfile)->cleanup)
(CPP_BUFFER (pfile), pfile);
CPP_BUFFER (pfile) = next_buf;
cpp_pop_buffer (pfile);
continue;
}
if (!CPP_TRADITIONAL (pfile))
@ -4558,40 +4567,11 @@ cpp_get_token (pfile)
if (!is_macro_call)
return CPP_NAME;
}
/* This is now known to be a macro call. */
/* it might not actually be a macro. */
if (hp->type != T_MACRO) {
int xbuf_len; U_CHAR *xbuf;
CPP_SET_WRITTEN (pfile, before_name_written);
special_symbol (hp, pfile);
xbuf_len = CPP_WRITTEN (pfile) - before_name_written;
xbuf = (U_CHAR *) xmalloc (xbuf_len + 1);
CPP_SET_WRITTEN (pfile, before_name_written);
bcopy (CPP_PWRITTEN (pfile), xbuf, xbuf_len + 1);
push_macro_expansion (pfile, xbuf, xbuf_len, hp);
}
else
{
/* Expand the macro, reading arguments as needed,
and push the expansion on the input stack. */
macroexpand (pfile, hp);
CPP_SET_WRITTEN (pfile, before_name_written);
}
/* An extra "@ " is added to the end of a macro expansion
to prevent accidental token pasting. We prefer to avoid
unneeded extra spaces (for the sake of cpp-using tools like
imake). Here we remove the space if it is safe to do so. */
if (pfile->buffer->rlimit - pfile->buffer->cur >= 3
&& pfile->buffer->rlimit[-2] == '@'
&& pfile->buffer->rlimit[-1] == ' ')
{
int c1 = pfile->buffer->rlimit[-3];
int c2 = CPP_BUF_PEEK (CPP_PREV_BUFFER (CPP_BUFFER (pfile)));
if (c2 == EOF || ! unsafe_chars (c1, c2))
pfile->buffer->rlimit -= 2;
}
/* This is now known to be a macro call.
Expand the macro, reading arguments as needed,
and push the expansion on the input stack. */
macroexpand (pfile, hp);
CPP_SET_WRITTEN (pfile, before_name_written);
}
goto get_next;