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cpphash.h (union hash_value): Remove keydef' member, add a struct hashnode *aschain' member for #assert.

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1998-12-15  Zack Weinberg  <zack@rabi.phys.columbia.edu>
	* cpphash.h (union hash_value): Remove `keydef' member, add a
          `struct hashnode *aschain' member for #assert.
	  * cpplib.c (struct tokenlist_list, struct
          assertion_hashnode): Delete structure definitions.
          (assertion_install, assertion_lookup, delete_assertion,
          check_assertion, compare_token_lists, reverse_token_list,
          read_token_list, free_token_list): Delete functions.
          (parse_assertion): New function.
	  (cpp_cleanup): Don't destroy the assertion_hashtable.
          (do_assert): Gut and rewrite.  #assert foo (bar) places
          entries for `#foo' and `#foo(bar)' in the macro hash table,
          type T_ASSERT.  The value union's `aschain' member is used
          to chain all answers for a given predicate together.
          (do_unassert): Also rewritten.  Take an un-asserted
          answer off the chain from its predicate and call
          delete_macro on the hashnode, or walk a predicate chain
          calling delete_macro on all the entries.
          (cpp_read_check_assertion): Simply call parse_assertion to
          get the canonical assertion name, and look that up in the
          hash table.
	* cpplib.h (ASSERTION_HASHNODE,ASSERTION_HASHSIZE,assertion_hashtab):
 	Removed.
	* cpphash.c (install): Use bcopy instead of an explicit loop
          to copy the macro name.
	* cppexp.c (cpp_lex): Convert the result of
          cpp_read_check_assertion to a `struct operation' directly;
          don't go through parse_number.

From-SVN: r24325
This commit is contained in:
Zack Weinberg 1998-12-15 11:09:16 +00:00 committed by Dave Brolley
parent 4b259e3fd8
commit 7061aa5a9e
6 changed files with 220 additions and 452 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

35
gcc/ChangeLog
View File

@ -1,3 +1,38 @@
1998-12-15 Zack Weinberg <zack@rabi.phys.columbia.edu>
* cpphash.h (union hash_value): Remove `keydef' member, add a
`struct hashnode *aschain' member for #assert.
* cpplib.c (struct tokenlist_list, struct
assertion_hashnode): Delete structure definitions.
(assertion_install, assertion_lookup, delete_assertion,
check_assertion, compare_token_lists, reverse_token_list,
read_token_list, free_token_list): Delete functions.
(parse_assertion): New function.
(cpp_cleanup): Don't destroy the assertion_hashtable.
(do_assert): Gut and rewrite. #assert foo (bar) places
entries for `#foo' and `#foo(bar)' in the macro hash table,
type T_ASSERT. The value union's `aschain' member is used
to chain all answers for a given predicate together.
(do_unassert): Also rewritten. Take an un-asserted
answer off the chain from its predicate and call
delete_macro on the hashnode, or walk a predicate chain
calling delete_macro on all the entries.
(cpp_read_check_assertion): Simply call parse_assertion to
get the canonical assertion name, and look that up in the
hash table.
* cpplib.h (ASSERTION_HASHNODE,ASSERTION_HASHSIZE,assertion_hashtab):
Removed.
* cpphash.c (install): Use bcopy instead of an explicit loop
to copy the macro name.
* cppexp.c (cpp_lex): Convert the result of
cpp_read_check_assertion to a `struct operation' directly;
don't go through parse_number.
Tue Dec 15 18:27:39 1998 J"orn Rennecke <amylaar@cygnus.co.uk>
* loop.h (struct induction): Delete times_used member.

7
gcc/cppexp.c
View File

@ -274,8 +274,11 @@ cpp_lex (pfile, skip_evaluation)
cpp_skip_hspace (pfile);
c = CPP_BUF_PEEK (CPP_BUFFER (pfile));
if (c == '#')
return parse_number (pfile,
cpp_read_check_assertion (pfile) ? "1" : "0", 1);
{
op.op = INT;
op.value = cpp_read_check_assertion (pfile);
return op;
}
if (c == '\n')
{

7
gcc/cpphash.c
View File

@ -154,7 +154,7 @@ install (name, len, type, ivalue, value, hash)
{
register HASHNODE *hp;
register int i, bucket;
register U_CHAR *p, *q;
register U_CHAR *p;
if (len < 0) {
p = name;
@ -182,10 +182,7 @@ install (name, len, type, ivalue, value, hash)
else
hp->value.cpval = value;
hp->name = ((U_CHAR *) hp) + sizeof (HASHNODE);
p = hp->name;
q = name;
for (i = 0; i < len; i++)
*p++ = *q++;
bcopy (name, hp->name, len);
hp->name[len] = 0;
return hp;
}

4
gcc/cpphash.h
View File

@ -4,9 +4,7 @@ union hashval {
int ival;
char *cpval;
DEFINITION *defn;
#if 0
KEYDEF *keydef;
#endif
struct hashnode *aschain; /* for #assert */
};
struct hashnode {

614
gcc/cpplib.c
View File

@ -106,29 +106,6 @@ static char *predefs = "";
#define REGISTER_PREFIX ""
#endif
/* In the definition of a #assert name, this structure forms
a list of the individual values asserted.
Each value is itself a list of "tokens".
These are strings that are compared by name. */
struct tokenlist_list {
struct tokenlist_list *next;
struct arglist *tokens;
};
struct assertion_hashnode {
struct assertion_hashnode *next; /* double links for easy deletion */
struct assertion_hashnode *prev;
/* also, a back pointer to this node's hash
chain is kept, in case the node is the head
of the chain and gets deleted. */
struct assertion_hashnode **bucket_hdr;
int length; /* length of token, for quick comparison */
U_CHAR *name; /* the actual name */
/* List of token-sequences. */
struct tokenlist_list *value;
};
#define SKIP_WHITE_SPACE(p) do { while (is_hor_space[*p]) p++; } while (0)
#define SKIP_ALL_WHITE_SPACE(p) do { while (is_space[*p]) p++; } while (0)
@ -182,12 +159,8 @@ extern void fancy_abort ();
static int check_macro_name PROTO ((cpp_reader *, U_CHAR *, char *));
static int compare_defs PROTO ((cpp_reader *,
DEFINITION *, DEFINITION *));
static int compare_token_lists PROTO ((struct arglist *,
struct arglist *));
static HOST_WIDE_INT eval_if_expression PROTO ((cpp_reader *, U_CHAR *, int));
static int change_newlines PROTO ((U_CHAR *, int));
static struct arglist *read_token_list PROTO ((cpp_reader *, int *));
static void free_token_list PROTO ((struct arglist *));
static void push_macro_expansion PARAMS ((cpp_reader *,
U_CHAR *, int, HASHNODE *));
static struct cpp_pending *nreverse_pending PARAMS ((struct cpp_pending *));
@ -3121,100 +3094,6 @@ do_include (pfile, keyword, unused1, unused2)
return 0;
}
/*
* Install a name in the assertion hash table.
*
* If LEN is >= 0, it is the length of the name.
* Otherwise, compute the length by scanning the entire name.
*
* If HASH is >= 0, it is the precomputed hash code.
* Otherwise, compute the hash code.
*/
static ASSERTION_HASHNODE *
assertion_install (pfile, name, len, hash)
cpp_reader *pfile;
U_CHAR *name;
int len;
int hash;
{
register ASSERTION_HASHNODE *hp;
register int i, bucket;
register U_CHAR *p, *q;
i = sizeof (ASSERTION_HASHNODE) + len + 1;
hp = (ASSERTION_HASHNODE *) xmalloc (i);
bucket = hash;
hp->bucket_hdr = &pfile->assertion_hashtab[bucket];
hp->next = pfile->assertion_hashtab[bucket];
pfile->assertion_hashtab[bucket] = hp;
hp->prev = NULL;
if (hp->next != NULL)
hp->next->prev = hp;
hp->length = len;
hp->value = 0;
hp->name = ((U_CHAR *) hp) + sizeof (ASSERTION_HASHNODE);
p = hp->name;
q = name;
for (i = 0; i < len; i++)
*p++ = *q++;
hp->name[len] = 0;
return hp;
}
/*
* find the most recent hash node for name "name" (ending with first
* non-identifier char) installed by install
*
* If LEN is >= 0, it is the length of the name.
* Otherwise, compute the length by scanning the entire name.
*
* If HASH is >= 0, it is the precomputed hash code.
* Otherwise, compute the hash code.
*/
static ASSERTION_HASHNODE *
assertion_lookup (pfile, name, len, hash)
cpp_reader *pfile;
U_CHAR *name;
int len;
int hash;
{
register ASSERTION_HASHNODE *bucket;
bucket = pfile->assertion_hashtab[hash];
while (bucket) {
if (bucket->length == len && strncmp (bucket->name, name, len) == 0)
return bucket;
bucket = bucket->next;
}
return NULL;
}
static void
delete_assertion (hp)
ASSERTION_HASHNODE *hp;
{
struct tokenlist_list *tail;
if (hp->prev != NULL)
hp->prev->next = hp->next;
if (hp->next != NULL)
hp->next->prev = hp->prev;
for (tail = hp->value; tail; )
{
struct tokenlist_list *next = tail->next;
free_token_list (tail->tokens);
free (tail);
tail = next;
}
/* Make sure that the bucket chain header that
the deleted guy was on points to the right thing afterwards. */
if (hp == *hp->bucket_hdr)
*hp->bucket_hdr = hp->next;
free (hp);
}
/* Convert a character string literal into a nul-terminated string.
The input string is [IN ... LIMIT).
@ -6049,351 +5928,240 @@ cpp_cleanup (pfile)
pfile->all_include_files[i] = 0;
}
for (i = ASSERTION_HASHSIZE; --i >= 0; )
{
while (pfile->assertion_hashtab[i])
delete_assertion (pfile->assertion_hashtab[i]);
}
cpp_hash_cleanup (pfile);
}
/* Read an assertion into the token buffer, converting to
canonical form: `#predicate(a n swe r)' The next non-whitespace
character to read should be the first letter of the predicate.
Returns 0 for syntax error, 1 for bare predicate, 2 for predicate
with answer (see callers for why). In case of 0, an error has been
printed. */
static int
parse_assertion (pfile)
cpp_reader *pfile;
{
int c, dropwhite;
cpp_skip_hspace (pfile);
c = PEEKC();
if (! is_idstart[c])
{
cpp_error (pfile, "assertion predicate is not an identifier");
return 0;
}
CPP_PUTC(pfile, '#');
FORWARD(1);
parse_name(pfile, c);
c = PEEKC();
if (c != '(')
{
if (is_hor_space[c])
cpp_skip_hspace (pfile);
c = PEEKC();
}
if (c != '(')
return 1;
CPP_PUTC(pfile, '(');
FORWARD(1);
dropwhite = 1;
while ((c = GETC()) != ')')
{
if (is_hor_space[c])
{
if (! dropwhite)
{
CPP_PUTC(pfile, ' ');
dropwhite = 1;
}
}
else if (c == '\\' && PEEKC() == '\n')
FORWARD(1);
else if (c == '\n' || c == EOF)
{
if (c == '\n') FORWARD(-1);
cpp_error (pfile, "un-terminated assertion answer");
return 0;
}
else
{
CPP_PUTC(pfile, c);
dropwhite = 0;
}
}
if (pfile->limit[-1] == ' ')
pfile->limit[-1] = ')';
else if (pfile->limit[-1] == '(')
{
cpp_error (pfile, "empty token sequence in assertion");
return 0;
}
else
CPP_PUTC(pfile, ')');
CPP_NUL_TERMINATE(pfile);
return 2;
}
static int
do_assert (pfile, keyword, buf, limit)
cpp_reader *pfile;
struct directive *keyword ATTRIBUTE_UNUSED;
U_CHAR *buf ATTRIBUTE_UNUSED, *limit ATTRIBUTE_UNUSED;
{
long symstart; /* remember where symbol name starts */
int c;
int sym_length; /* and how long it is */
struct arglist *tokens = NULL;
char *sym;
int ret, c;
HASHNODE *base, *this;
int baselen, thislen;
if (CPP_PEDANTIC (pfile) && CPP_OPTIONS (pfile)->done_initializing
&& !CPP_BUFFER (pfile)->system_header_p)
cpp_pedwarn (pfile, "ANSI C does not allow `#assert'");
cpp_skip_hspace (pfile);
symstart = CPP_WRITTEN (pfile); /* remember where it starts */
parse_name (pfile, GETC());
sym_length = check_macro_name (pfile, pfile->token_buffer + symstart,
"assertion");
sym = CPP_PWRITTEN (pfile); /* remember where it starts */
ret = parse_assertion (pfile);
if (ret == 0)
goto error;
else if (ret == 1)
{
cpp_error (pfile, "missing token-sequence in `#assert'");
goto error;
}
cpp_skip_hspace (pfile);
if (PEEKC() != '(') {
cpp_error (pfile, "missing token-sequence in `#assert'");
c = PEEKC();
if (c != EOF && c != '\n')
{
cpp_error (pfile, "junk at end of `#assert'");
goto error;
}
thislen = strlen (sym);
baselen = index (sym, '(') - sym;
this = cpp_lookup (pfile, sym, thislen, -1);
if (this)
{
cpp_warning (pfile, "`%s' re-asserted", sym);
goto error;
}
base = cpp_lookup (pfile, sym, baselen, -1);
if (! base)
base = install (sym, baselen, T_ASSERT, 0, 0, -1);
else if (base->type != T_ASSERT)
{
/* Token clash - but with what?! */
cpp_fatal (pfile,
"cpp internal error: base->type != T_ASSERT in do_assert");
goto error;
}
{
int error_flag = 0;
tokens = read_token_list (pfile, &error_flag);
if (error_flag)
goto error;
if (tokens == 0) {
cpp_error (pfile, "empty token-sequence in `#assert'");
goto error;
}
cpp_skip_hspace (pfile);
c = PEEKC ();
if (c != EOF && c != '\n')
cpp_pedwarn (pfile, "junk at end of `#assert'");
skip_rest_of_line (pfile);
}
/* If this name isn't already an assertion name, make it one.
Error if it was already in use in some other way. */
{
ASSERTION_HASHNODE *hp;
U_CHAR *symname = pfile->token_buffer + symstart;
int hashcode = hashf (symname, sym_length, ASSERTION_HASHSIZE);
struct tokenlist_list *value
= (struct tokenlist_list *) xmalloc (sizeof (struct tokenlist_list));
hp = assertion_lookup (pfile, symname, sym_length, hashcode);
if (hp == NULL) {
if (sym_length == 7 && ! strncmp (symname, "defined", sym_length))
cpp_error (pfile, "`defined' redefined as assertion");
hp = assertion_install (pfile, symname, sym_length, hashcode);
}
/* Add the spec'd token-sequence to the list of such. */
value->tokens = tokens;
value->next = hp->value;
hp->value = value;
}
CPP_SET_WRITTEN (pfile, symstart); /* Pop */
this = install (sym, thislen, T_ASSERT, 0,
(char *)base->value.aschain, -1);
base->value.aschain = this;
pfile->limit = sym; /* Pop */
return 0;
error:
CPP_SET_WRITTEN (pfile, symstart); /* Pop */
pfile->limit = sym; /* Pop */
skip_rest_of_line (pfile);
return 1;
}
static int
do_unassert (pfile, keyword, buf, limit)
cpp_reader *pfile;
struct directive *keyword ATTRIBUTE_UNUSED;
U_CHAR *buf ATTRIBUTE_UNUSED, *limit ATTRIBUTE_UNUSED;
{
long symstart; /* remember where symbol name starts */
int sym_length; /* and how long it is */
int c;
struct arglist *tokens = NULL;
int tokens_specified = 0;
int c, ret;
char *sym;
long baselen, thislen;
HASHNODE *base, *this, *next;
if (CPP_PEDANTIC (pfile) && CPP_OPTIONS (pfile)->done_initializing
&& !CPP_BUFFER (pfile)->system_header_p)
cpp_pedwarn (pfile, "ANSI C does not allow `#unassert'");
cpp_skip_hspace (pfile);
symstart = CPP_WRITTEN (pfile); /* remember where it starts */
parse_name (pfile, GETC());
sym_length = check_macro_name (pfile, pfile->token_buffer + symstart,
"assertion");
cpp_skip_hspace (pfile);
if (PEEKC() == '(') {
int error_flag = 0;
tokens = read_token_list (pfile, &error_flag);
if (error_flag)
goto error;
if (tokens == 0) {
cpp_error (pfile, "empty token list in `#unassert'");
goto error;
}
tokens_specified = 1;
}
sym = CPP_PWRITTEN (pfile); /* remember where it starts */
ret = parse_assertion (pfile);
if (ret == 0)
goto error;
cpp_skip_hspace (pfile);
c = PEEKC ();
if (c != EOF && c != '\n')
cpp_error (pfile, "junk at end of `#unassert'");
skip_rest_of_line (pfile);
{
ASSERTION_HASHNODE *hp;
U_CHAR *symname = pfile->token_buffer + symstart;
int hashcode = hashf (symname, sym_length, ASSERTION_HASHSIZE);
struct tokenlist_list *tail, *prev;
hp = assertion_lookup (pfile, symname, sym_length, hashcode);
if (hp == NULL)
return 1;
/* If no token list was specified, then eliminate this assertion
entirely. */
if (! tokens_specified)
delete_assertion (hp);
else {
/* If a list of tokens was given, then delete any matching list. */
tail = hp->value;
prev = 0;
while (tail) {
struct tokenlist_list *next = tail->next;
if (compare_token_lists (tail->tokens, tokens)) {
if (prev)
prev->next = next;
else
hp->value = tail->next;
free_token_list (tail->tokens);
free (tail);
} else {
prev = tail;
thislen = strlen (sym);
if (ret == 1)
{
base = cpp_lookup (pfile, sym, thislen, -1);
if (! base)
goto error; /* It isn't an error to #undef what isn't #defined,
so it isn't an error to #unassert what isn't
#asserted either. */
for (this = base->value.aschain; this; this = next)
{
next = this->value.aschain;
delete_macro (this);
}
tail = next;
}
delete_macro (base);
}
}
else
{
baselen = index (sym, '(') - sym;
base = cpp_lookup (pfile, sym, baselen, -1);
if (! base) goto error;
this = cpp_lookup (pfile, sym, thislen, -1);
if (! this) goto error;
CPP_SET_WRITTEN (pfile, symstart); /* Pop */
next = base;
while (next->value.aschain != this)
next = next->value.aschain;
next->value.aschain = this->value.aschain;
delete_macro (this);
if (base->value.aschain == NULL)
delete_macro (base); /* Last answer for this predicate deleted. */
}
pfile->limit = sym; /* Pop */
return 0;
error:
CPP_SET_WRITTEN (pfile, symstart); /* Pop */
pfile->limit = sym; /* Pop */
skip_rest_of_line (pfile);
return 1;
}
/* Test whether there is an assertion named NAME
and optionally whether it has an asserted token list TOKENS.
NAME is not null terminated; its length is SYM_LENGTH.
If TOKENS_SPECIFIED is 0, then don't check for any token list. */
int
check_assertion (pfile, name, sym_length, tokens_specified, tokens)
cpp_read_check_assertion (pfile)
cpp_reader *pfile;
U_CHAR *name;
int sym_length;
int tokens_specified;
struct arglist *tokens;
{
ASSERTION_HASHNODE *hp;
int hashcode = hashf (name, sym_length, ASSERTION_HASHSIZE);
if (CPP_PEDANTIC (pfile) && !CPP_BUFFER (pfile)->system_header_p)
cpp_pedwarn (pfile, "ANSI C does not allow testing assertions");
hp = assertion_lookup (pfile, name, sym_length, hashcode);
if (hp == NULL)
/* It is not an assertion; just return false. */
return 0;
/* If no token list was specified, then value is 1. */
if (! tokens_specified)
return 1;
{
struct tokenlist_list *tail;
tail = hp->value;
/* If a list of tokens was given,
then succeed if the assertion records a matching list. */
while (tail) {
if (compare_token_lists (tail->tokens, tokens))
return 1;
tail = tail->next;
}
/* Fail if the assertion has no matching list. */
return 0;
}
}
/* Compare two lists of tokens for equality including order of tokens. */
static int
compare_token_lists (l1, l2)
struct arglist *l1, *l2;
{
while (l1 && l2) {
if (l1->length != l2->length)
return 0;
if (strncmp (l1->name, l2->name, l1->length))
return 0;
l1 = l1->next;
l2 = l2->next;
}
/* Succeed if both lists end at the same time. */
return l1 == l2;
}
struct arglist *
reverse_token_list (tokens)
struct arglist *tokens;
{
register struct arglist *prev = 0, *this, *next;
for (this = tokens; this; this = next)
char *name = CPP_PWRITTEN (pfile);
int result;
HASHNODE *hp;
FORWARD (1); /* Skip '#' */
cpp_skip_hspace (pfile);
if (! parse_assertion (pfile))
result = 0;
else
{
next = this->next;
this->next = prev;
prev = this;
}
return prev;
}
/* Read a space-separated list of tokens ending in a close parenthesis.
Return a list of strings, in the order they were written.
(In case of error, return 0 and store -1 in *ERROR_FLAG.) */
static struct arglist *
read_token_list (pfile, error_flag)
cpp_reader *pfile;
int *error_flag;
{
struct arglist *token_ptrs = 0;
int depth = 1;
int length;
*error_flag = 0;
FORWARD (1); /* Skip '(' */
/* Loop over the assertion value tokens. */
while (depth > 0)
{
struct arglist *temp;
long name_written = CPP_WRITTEN (pfile);
int c;
cpp_skip_hspace (pfile);
c = GETC ();
/* Find the end of the token. */
if (c == '(')
{
CPP_PUTC (pfile, c);
depth++;
}
else if (c == ')')
{
depth--;
if (depth == 0)
break;
CPP_PUTC (pfile, c);
}
else if (c == '"' || c == '\'')
{
FORWARD(-1);
cpp_get_token (pfile);
}
else if (c == '\n')
break;
else
{
while (c != EOF && ! is_space[c] && c != '(' && c != ')'
&& c != '"' && c != '\'')
{
CPP_PUTC (pfile, c);
c = GETC();
}
if (c != EOF) FORWARD(-1);
}
length = CPP_WRITTEN (pfile) - name_written;
temp = (struct arglist *)
xmalloc (sizeof (struct arglist) + length + 1);
temp->name = (U_CHAR *) (temp + 1);
bcopy ((char *) (pfile->token_buffer + name_written),
(char *) temp->name, length);
temp->name[length] = 0;
temp->next = token_ptrs;
token_ptrs = temp;
temp->length = length;
CPP_ADJUST_WRITTEN (pfile, -length); /* pop */
if (c == EOF || c == '\n')
{ /* FIXME */
cpp_error (pfile,
"unterminated token sequence following `#' operator");
return 0;
}
hp = cpp_lookup (pfile, name, (char *)CPP_PWRITTEN (pfile) - name, -1);
result = (hp != 0);
}
/* We accumulated the names in reverse order.
Now reverse them to get the proper order. */
return reverse_token_list (token_ptrs);
}
static void
free_token_list (tokens)
struct arglist *tokens;
{
while (tokens) {
struct arglist *next = tokens->next;
free (tokens->name);
free (tokens);
tokens = next;
}
pfile->limit = name;
return result;
}
/* FIXME: savestring() should be renamed strdup() and should
@ -6465,34 +6233,6 @@ parse_move_mark (pmark, pfile)
pmark->position = pbuf->cur - pbuf->buf;
}
int
cpp_read_check_assertion (pfile)
cpp_reader *pfile;
{
int name_start = CPP_WRITTEN (pfile);
int name_length, name_written;
int result;
FORWARD (1); /* Skip '#' */
cpp_skip_hspace (pfile);
parse_name (pfile, GETC ());
name_written = CPP_WRITTEN (pfile);
name_length = name_written - name_start;
cpp_skip_hspace (pfile);
if (CPP_BUF_PEEK (CPP_BUFFER (pfile)) == '(')
{
int error_flag;
struct arglist *token_ptrs = read_token_list (pfile, &error_flag);
result = check_assertion (pfile,
pfile->token_buffer + name_start, name_length,
1, token_ptrs);
}
else
result = check_assertion (pfile,
pfile->token_buffer + name_start, name_length,
0, NULL_PTR);
CPP_ADJUST_WRITTEN (pfile, - name_length); /* pop */
return result;
}
void
cpp_print_file_and_line (pfile)

5
gcc/cpplib.h
View File

@ -144,9 +144,6 @@ struct cpp_buffer {
struct cpp_pending; /* Forward declaration - for C++. */
struct file_name_map_list;
typedef struct assertion_hashnode ASSERTION_HASHNODE;
#define ASSERTION_HASHSIZE 37
/* Maximum nesting of cpp_buffers. We use a static limit, partly for
efficiency, and partly to limit runaway recursion. */
#define CPP_STACK_MAX 200
@ -230,8 +227,6 @@ struct cpp_reader
struct tm *timebuf;
ASSERTION_HASHNODE *assertion_hashtab[ASSERTION_HASHSIZE];
/* Buffer of -M output. */
char *deps_buffer;