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proc.c
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/****************************************************************
Copyright 1990, 1991, 1992, 1993 by AT&T Bell Laboratories and Bellcore.
Permission to use, copy, modify, and distribute this software
and its documentation for any purpose and without fee is hereby
granted, provided that the above copyright notice appear in all
copies and that both that the copyright notice and this
permission notice and warranty disclaimer appear in supporting
documentation, and that the names of AT&T Bell Laboratories or
Bellcore or any of their entities not be used in advertising or
publicity pertaining to distribution of the software without
specific, written prior permission.
AT&T and Bellcore disclaim all warranties with regard to this
software, including all implied warranties of merchantability
and fitness. In no event shall AT&T or Bellcore be liable for
any special, indirect or consequential damages or any damages
whatsoever resulting from loss of use, data or profits, whether
in an action of contract, negligence or other tortious action,
arising out of or in connection with the use or performance of
this software.
****************************************************************/
#include "defs.h"
#include "names.h"
#include "output.h"
#include "p1defs.h"
#define EXNULL (union Expression *)0
LOCAL dobss(), docomleng(), docommon(), doentry(),
epicode(), nextarg(), retval();
static char Blank[] = BLANKCOMMON;
static char *postfix[] = { "g", "h", "i",
#ifdef TYQUAD
"j",
#endif
"r", "d", "c", "z", "g", "h", "i" };
chainp new_procs;
int prev_proc, proc_argchanges, proc_protochanges;
void
changedtype(q)
Namep q;
{
char buf[200];
int qtype, type1;
register Extsym *e;
Argtypes *at;
if (q->vtypewarned)
return;
q->vtypewarned = 1;
qtype = q->vtype;
e = &extsymtab[q->vardesc.varno];
if (!(at = e->arginfo)) {
if (!e->exused)
return;
}
else if (at->changes & 2 && qtype != TYUNKNOWN && !at->defined)
proc_protochanges++;
type1 = e->extype;
if (type1 == TYUNKNOWN)
return;
if (qtype == TYUNKNOWN)
/* e.g.,
subroutine foo
end
external foo
call goo(foo)
end
*/
return;
sprintf(buf, "%.90s: inconsistent declarations:\n\
here %s%s, previously %s%s.", q->fvarname, ftn_types[qtype],
qtype == TYSUBR ? "" : " function",
ftn_types[type1], type1 == TYSUBR ? "" : " function");
warn(buf);
}
void
unamstring(q, s)
register Addrp q;
register char *s;
{
register int k;
register char *t;
k = strlen(s);
if (k < IDENT_LEN) {
q->uname_tag = UNAM_IDENT;
t = q->user.ident;
}
else {
q->uname_tag = UNAM_CHARP;
q->user.Charp = t = mem(k+1, 0);
}
strcpy(t, s);
}
static void
fix_entry_returns() /* for multiple entry points */
{
Addrp a;
int i;
struct Entrypoint *e;
Namep np;
e = entries = (struct Entrypoint *)revchain((chainp)entries);
allargs = revchain(allargs);
if (!multitype)
return;
/* TYLOGICAL should have been turned into TYLONG or TYSHORT by now */
for(i = TYINT1; i <= TYLOGICAL; i++)
if (a = xretslot[i])
sprintf(a->user.ident, "(*ret_val).%s",
postfix[i-TYINT1]);
do {
np = e->enamep;
switch(np->vtype) {
case TYINT1:
case TYSHORT:
case TYLONG:
#ifdef TYQUAD
case TYQUAD:
#endif
case TYREAL:
case TYDREAL:
case TYCOMPLEX:
case TYDCOMPLEX:
case TYLOGICAL1:
case TYLOGICAL2:
case TYLOGICAL:
np->vstg = STGARG;
}
}
while(e = e->entnextp);
}
static void
putentries(outfile) /* put out wrappers for multiple entries */
FILE *outfile;
{
char base[IDENT_LEN];
struct Entrypoint *e;
Namep *A, *Ae, *Ae1, **Alp, *a, **a1, np;
chainp args, lengths, length_comp();
void listargs(), list_arg_types();
int i, k, mt, nL, type;
extern char *dfltarg[], **dfltproc;
e = entries;
if (!e->enamep) /* only possible with erroneous input */
return;
nL = (nallargs + nallchargs) * sizeof(Namep *);
A = (Namep *)ckalloc(nL + nallargs*sizeof(Namep **));
Ae = A + nallargs;
Alp = (Namep **)(Ae1 = Ae + nallchargs);
i = k = 0;
for(a1 = Alp, args = allargs; args; a1++, args = args->nextp) {
np = (Namep)args->datap;
if (np->vtype == TYCHAR && np->vclass != CLPROC)
*a1 = &Ae[i++];
}
mt = multitype;
multitype = 0;
sprintf(base, "%s0_", e->enamep->cvarname);
do {
np = e->enamep;
lengths = length_comp(e, 0);
proctype = type = np->vtype;
if (protofile)
protowrite(protofile, type, np->cvarname, e, lengths);
nice_printf(outfile, "\n%s ", c_type_decl(type, 1));
nice_printf(outfile, "%s", np->cvarname);
if (!Ansi) {
listargs(outfile, e, 0, lengths);
nice_printf(outfile, "\n");
}
list_arg_types(outfile, e, lengths, 0, "\n");
nice_printf(outfile, "{\n");
frchain(&lengths);
next_tab(outfile);
if (mt)
nice_printf(outfile,
"Multitype ret_val;\n%s(%d, &ret_val",
base, k); /*)*/
else if (ISCOMPLEX(type))
nice_printf(outfile, "%s(%d,%s", base, k,
xretslot[type]->user.ident); /*)*/
else if (type == TYCHAR)
nice_printf(outfile,
"%s(%d, ret_val, ret_val_len", base, k); /*)*/
else
nice_printf(outfile, "return %s(%d", base, k); /*)*/
k++;
memset((char *)A, 0, nL);
for(args = e->arglist; args; args = args->nextp) {
np = (Namep)args->datap;
A[np->argno] = np;
if (np->vtype == TYCHAR && np->vclass != CLPROC)
*Alp[np->argno] = np;
}
args = allargs;
for(a = A; a < Ae; a++, args = args->nextp)
nice_printf(outfile, ", %s", (np = *a)
? np->cvarname
: ((Namep)args->datap)->vclass == CLPROC
? dfltproc[((Namep)args->datap)->vtype]
: dfltarg[((Namep)args->datap)->vtype]);
for(; a < Ae1; a++)
if (np = *a)
nice_printf(outfile, ", %s_len", np->fvarname);
else
nice_printf(outfile, ", (ftnint)0");
nice_printf(outfile, /*(*/ ");\n");
if (mt) {
if (type == TYCOMPLEX)
nice_printf(outfile,
"r_v->r = ret_val.c.r; r_v->i = ret_val.c.i;\n");
else if (type == TYDCOMPLEX)
nice_printf(outfile,
"r_v->r = ret_val.z.r; r_v->i = ret_val.z.i;\n");
else if (type <= TYLOGICAL)
nice_printf(outfile, "return ret_val.%s;\n",
postfix[type-TYINT1]);
}
nice_printf(outfile, "}\n");
prev_tab(outfile);
}
while(e = e->entnextp);
free((char *)A);
}
static void
entry_goto(outfile)
FILEP outfile;
{
struct Entrypoint *e = entries;
int k = 0;
nice_printf(outfile, "switch(n__) {\n");
next_tab(outfile);
while(e = e->entnextp)
nice_printf(outfile, "case %d: goto %s;\n", ++k,
user_label((long)(extsymtab - e->entryname - 1)));
nice_printf(outfile, "}\n\n");
prev_tab(outfile);
}
/* start a new procedure */
newproc()
{
if(parstate != OUTSIDE)
{
execerr("missing end statement", CNULL);
endproc();
}
parstate = INSIDE;
procclass = CLMAIN; /* default */
}
static void
zap_changes()
{
register chainp cp;
register Argtypes *at;
/* arrange to get correct count of prototypes that would
change by running f2c again */
if (prev_proc && proc_argchanges)
proc_protochanges++;
prev_proc = proc_argchanges = 0;
for(cp = new_procs; cp; cp = cp->nextp)
if (at = ((Namep)cp->datap)->arginfo)
at->changes &= ~1;
frchain(&new_procs);
}
/* end of procedure. generate variables, epilogs, and prologs */
endproc()
{
struct Labelblock *lp;
Extsym *ext;
if(parstate < INDATA)
enddcl();
if(ctlstack >= ctls)
err("DO loop or BLOCK IF not closed");
for(lp = labeltab ; lp < labtabend ; ++lp)
if(lp->stateno!=0 && lp->labdefined==NO)
errstr("missing statement label %s",
convic(lp->stateno) );
/* Save copies of the common variables in extptr -> allextp */
for (ext = extsymtab; ext < nextext; ext++)
if (ext -> extstg == STGCOMMON && ext -> extp) {
extern int usedefsforcommon;
/* Write out the abbreviations for common block reference */
copy_data (ext -> extp);
if (usedefsforcommon) {
wr_abbrevs (c_file, 1, ext -> extp);
ext -> used_here = 1;
}
else
ext -> extp = CHNULL;
}
if (nentry > 1)
fix_entry_returns();
epicode();
donmlist();
dobss();
start_formatting ();
if (nentry > 1)
putentries(c_file);
zap_changes();
procinit(); /* clean up for next procedure */
}
/* End of declaration section of procedure. Allocate storage. */
enddcl()
{
register struct Entrypoint *ep;
struct Entrypoint *ep0;
extern void freetemps();
chainp cp;
extern char *err_proc;
static char comblks[] = "common blocks";
err_proc = comblks;
docommon();
/* Now the hash table entries for fields of common blocks have STGCOMMON,
vdcldone, voffset, and varno. And the common blocks themselves have
their full sizes in extleng. */
err_proc = "equivalences";
doequiv();
err_proc = comblks;
docomleng();
/* This implies that entry points in the declarations are buffered in
entries but not written out */
err_proc = "entries";
if (ep = ep0 = (struct Entrypoint *)revchain((chainp)entries)) {
/* entries could be 0 in case of an error */
do doentry(ep);
while(ep = ep->entnextp);
entries = (struct Entrypoint *)revchain((chainp)ep0);
}
err_proc = 0;
parstate = INEXEC;
p1put(P1_PROCODE);
freetemps();
if (earlylabs) {
for(cp = earlylabs = revchain(earlylabs); cp; cp = cp->nextp)
p1_label((long)cp->datap);
frchain(&earlylabs);
}
p1_line_number(lineno); /* for files that start with a MAIN program */
/* that starts with an executable statement */
}
/* ROUTINES CALLED WHEN ENCOUNTERING ENTRY POINTS */
/* Main program or Block data */
startproc(progname, class)
Extsym * progname;
int class;
{
register struct Entrypoint *p;
p = ALLOC(Entrypoint);
if(class == CLMAIN) {
puthead(CNULL, CLMAIN);
if (progname)
strcpy (main_alias, progname->cextname);
} else
puthead(CNULL, CLBLOCK);
if(class == CLMAIN)
newentry( mkname(" MAIN"), 0 )->extinit = 1;
p->entryname = progname;
entries = p;
procclass = class;
fprintf(diagfile, " %s", (class==CLMAIN ? "MAIN" : "BLOCK DATA") );
if(progname) {
fprintf(diagfile, " %s", progname->fextname);
procname = progname->cextname;
}
fprintf(diagfile, ":\n");
fflush(diagfile);
}
/* subroutine or function statement */
Extsym *newentry(v, substmsg)
register Namep v;
int substmsg;
{
register Extsym *p;
char buf[128], badname[64];
static int nbad = 0;
static char already[] = "external name already used";
p = mkext(v->fvarname, addunder(v->cvarname));
if(p->extinit || ! ONEOF(p->extstg, M(STGUNKNOWN)|M(STGEXT)) )
{
sprintf(badname, "%s_bad%d", v->fvarname, ++nbad);
if (substmsg) {
sprintf(buf,"%s\n\tsubstituting \"%s\"",
already, badname);
dclerr(buf, v);
}
else
dclerr(already, v);
p = mkext(v->fvarname, badname);
}
v->vstg = STGAUTO;
v->vprocclass = PTHISPROC;
v->vclass = CLPROC;
if (p->extstg == STGEXT)
prev_proc = 1;
else
p->extstg = STGEXT;
p->extinit = YES;
v->vardesc.varno = p - extsymtab;
return(p);
}
entrypt(class, type, length, entry, args)
int class, type;
ftnint length;
Extsym *entry;
chainp args;
{
register Namep q;
register struct Entrypoint *p;
if(class != CLENTRY)
puthead( procname = entry->cextname, class);
else
fprintf(diagfile, " entry ");
fprintf(diagfile, " %s:\n", entry->fextname);
fflush(diagfile);
q = mkname(entry->fextname);
if (type == TYSUBR)
q->vstg = STGEXT;
type = lengtype(type, length);
if(class == CLPROC)
{
procclass = CLPROC;
proctype = type;
procleng = type == TYCHAR ? length : 0;
}
p = ALLOC(Entrypoint);
p->entnextp = entries;
entries = p;
p->entryname = entry;
p->arglist = revchain(args);
p->enamep = q;
if(class == CLENTRY)
{
class = CLPROC;
if(proctype == TYSUBR)
type = TYSUBR;
}
q->vclass = class;
q->vprocclass = 0;
settype(q, type, length);
q->vprocclass = PTHISPROC;
/* hold all initial entry points till end of declarations */
if(parstate >= INDATA)
doentry(p);
}
/* generate epilogs */
/* epicode -- write out the proper function return mechanism at the end of
the procedure declaration. Handles multiple return value types, as
well as cooercion into the proper value */
LOCAL epicode()
{
extern int lastwasbranch;
if(procclass==CLPROC)
{
if(proctype==TYSUBR)
{
/* Return a zero only when the alternate return mechanism has been
specified in the function header */
if ((substars || Ansi) && lastwasbranch != YES)
p1_subr_ret (ICON(0));
}
else if (!multitype && lastwasbranch != YES)
retval(proctype);
}
else if (procclass == CLMAIN && Ansi && lastwasbranch != YES)
p1_subr_ret (ICON(0));
lastwasbranch = NO;
}
/* generate code to return value of type t */
LOCAL retval(t)
register int t;
{
register Addrp p;
switch(t)
{
case TYCHAR:
case TYCOMPLEX:
case TYDCOMPLEX:
break;
case TYLOGICAL:
t = tylogical;
case TYINT1:
case TYADDR:
case TYSHORT:
case TYLONG:
#ifdef TYQUAD
case TYQUAD:
#endif
case TYREAL:
case TYDREAL:
case TYLOGICAL1:
case TYLOGICAL2:
p = (Addrp) cpexpr((expptr)retslot);
p->vtype = t;
p1_subr_ret (mkconv (t, fixtype((expptr)p)));
break;
default:
badtype("retval", t);
}
}
/* Do parameter adjustments */
procode(outfile)
FILE *outfile;
{
prolog(outfile, allargs);
if (nentry > 1)
entry_goto(outfile);
}
/* Finish bound computations now that all variables are declared.
* This used to be in setbound(), but under -u the following incurred
* an erroneous error message:
* subroutine foo(x,n)
* real x(n)
* integer n
*/
static void
dim_finish(v)
Namep v;
{
register struct Dimblock *p;
register expptr q;
register int i, nd;
extern expptr make_int_expr();
p = v->vdim;
v->vdimfinish = 0;
nd = p->ndim;
doin_setbound = 1;
for(i = 0; i < nd; i++)
if (q = p->dims[i].dimexpr) {
q = p->dims[i].dimexpr = make_int_expr(putx(fixtype(q)));
if (!ONEOF(q->headblock.vtype, MSKINT|MSKREAL))
errstr("bad dimension type for %.70s",
v->fvarname);
}
if (q = p->basexpr)
p->basexpr = make_int_expr(putx(fixtype(q)));
doin_setbound = 0;
}
static void
duparg(q)
Namep q;
{ errstr("duplicate argument %.80s", q->fvarname); }
/*
manipulate argument lists (allocate argument slot positions)
* keep track of return types and labels
*/
LOCAL doentry(ep)
struct Entrypoint *ep;
{
register int type;
register Namep np;
chainp p, p1;
register Namep q;
Addrp mkarg(), rs;
int it, k;
extern char dflttype[26];
Extsym *entryname = ep->entryname;
if (++nentry > 1)
p1_label((long)(extsymtab - entryname - 1));
/* The main program isn't allowed to have parameters, so any given
parameters are ignored */
if(procclass == CLMAIN || procclass == CLBLOCK)
return;
/* So now we're working with something other than CLMAIN or CLBLOCK.
Determine the type of its return value. */
impldcl( np = mkname(entryname->fextname) );
type = np->vtype;
proc_argchanges = prev_proc && type != entryname->extype;
entryname->extseen = 1;
if(proctype == TYUNKNOWN)
if( (proctype = type) == TYCHAR)
procleng = np->vleng ? np->vleng->constblock.Const.ci
: (ftnint) (-1);
if(proctype == TYCHAR)
{
if(type != TYCHAR)
err("noncharacter entry of character function");
/* Functions returning type char can only have multiple entries if all
entries return the same length */
else if( (np->vleng ? np->vleng->constblock.Const.ci :
(ftnint) (-1)) != procleng)
err("mismatched character entry lengths");
}
else if(type == TYCHAR)
err("character entry of noncharacter function");
else if(type != proctype)
multitype = YES;
if(rtvlabel[type] == 0)
rtvlabel[type] = newlabel();
ep->typelabel = rtvlabel[type];
if(type == TYCHAR)
{
if(chslot < 0)
{
chslot = nextarg(TYADDR);
chlgslot = nextarg(TYLENG);
}
np->vstg = STGARG;
/* Put a new argument in the function, one which will hold the result of
a character function. This will have to be named sometime, probably in
mkarg(). */
if(procleng < 0) {
np->vleng = (expptr) mkarg(TYLENG, chlgslot);
np->vleng->addrblock.uname_tag = UNAM_IDENT;
strcpy (np -> vleng -> addrblock.user.ident,
new_func_length());
}
if (!xretslot[TYCHAR]) {
xretslot[TYCHAR] = rs =
autovar(0, type, ISCONST(np->vleng)
? np->vleng : ICON(0), "");
strcpy(rs->user.ident, "ret_val");
}
}
/* Handle a complex return type -- declare a new parameter (pointer to
a complex value) */
else if( ISCOMPLEX(type) ) {
if (!xretslot[type])
xretslot[type] =
autovar(0, type, EXNULL, " ret_val");
/* the blank is for use in out_addr */
np->vstg = STGARG;
if(cxslot < 0)
cxslot = nextarg(TYADDR);
}
else if (type != TYSUBR) {
if (type == TYUNKNOWN) {
dclerr("untyped function", np);
proctype = type = np->vtype =
dflttype[letter(np->fvarname[0])];
}
if (!xretslot[type])
xretslot[type] = retslot =
autovar(1, type, EXNULL, " ret_val");
/* the blank is for use in out_addr */
np->vstg = STGAUTO;
}
for(p = ep->arglist ; p ; p = p->nextp)
if(! (( q = (Namep) (p->datap) )->vknownarg) ) {
q->vknownarg = 1;
q->vardesc.varno = nextarg(TYADDR);
allargs = mkchain((char *)q, allargs);
q->argno = nallargs++;
}
else if (nentry == 1)
duparg(q);
else for(p1 = ep->arglist ; p1 != p; p1 = p1->nextp)
if ((Namep)p1->datap == q)
duparg(q);
k = 0;
for(p = ep->arglist ; p ; p = p->nextp) {
if(! (( q = (Namep) (p->datap) )->vdcldone) )
{
impldcl(q);
q->vdcldone = YES;
if(q->vtype == TYCHAR)
{
/* If we don't know the length of a char*(*) (i.e. a string), we must add
in this additional length argument. */
++nallchargs;
if (q->vclass == CLPROC)
nallchargs--;
else if (q->vleng == NULL) {
/* character*(*) */
q->vleng = (expptr)
mkarg(TYLENG, nextarg(TYLENG) );
unamstring((Addrp)q->vleng,
new_arg_length(q));
}
}
}
if (q->vdimfinish)
dim_finish(q);
if (q->vtype == TYCHAR && q->vclass != CLPROC)
k++;
}
if (entryname->extype != type)
changedtype(np);
/* save information for checking consistency of arg lists */
it = infertypes;
if (entryname->exproto)
infertypes = 1;
save_argtypes(ep->arglist, &entryname->arginfo, &np->arginfo,
0, np->fvarname, STGEXT, k, np->vtype, 2);
infertypes = it;
}
LOCAL nextarg(type)
int type;
{ return(lastargslot++); }
LOCAL
dim_check(q)
Namep q;
{
register struct Dimblock *vdim = q->vdim;
if(!vdim->nelt || !ISICON(vdim->nelt))
dclerr("adjustable dimension on non-argument", q);
else if (vdim->nelt->constblock.Const.ci <= 0)
dclerr("nonpositive dimension", q);
}
LOCAL dobss()
{
register struct Hashentry *p;
register Namep q;
int qstg, qclass, qtype;
Extsym *e;
for(p = hashtab ; p<lasthash ; ++p)
if(q = p->varp)
{
qstg = q->vstg;
qtype = q->vtype;
qclass = q->vclass;
if( (qclass==CLUNKNOWN && qstg!=STGARG) ||
(qclass==CLVAR && qstg==STGUNKNOWN) ) {
if (!(q->vis_assigned | q->vimpldovar))
warn1("local variable %s never used",
q->fvarname);
}
else if(qclass==CLVAR && qstg==STGBSS)
{ ; }
/* Give external procedures the proper storage class */
else if(qclass==CLPROC && q->vprocclass==PEXTERNAL
&& qstg!=STGARG) {
e = mkext(q->fvarname,addunder(q->cvarname));
e->extstg = STGEXT;
q->vardesc.varno = e - extsymtab;
if (e->extype != qtype)
changedtype(q);
}
if(qclass==CLVAR) {
if (qstg != STGARG && q->vdim)
dim_check(q);
} /* if qclass == CLVAR */
}
}
donmlist()
{
register struct Hashentry *p;
register Namep q;
for(p=hashtab; p<lasthash; ++p)
if( (q = p->varp) && q->vclass==CLNAMELIST)
namelist(q);
}
/* iarrlen -- Returns the size of the array in bytes, or -1 */
ftnint iarrlen(q)
register Namep q;
{
ftnint leng;
leng = typesize[q->vtype];
if(leng <= 0)
return(-1);
if(q->vdim)
if( ISICON(q->vdim->nelt) )
leng *= q->vdim->nelt->constblock.Const.ci;
else return(-1);
if(q->vleng)
if( ISICON(q->vleng) )
leng *= q->vleng->constblock.Const.ci;
else return(-1);
return(leng);
}
namelist(np)
Namep np;
{
register chainp q;
register Namep v;
int y;
if (!np->visused)
return;
y = 0;
for(q = np->varxptr.namelist ; q ; q = q->nextp)
{
vardcl( v = (Namep) (q->datap) );
if( !ONEOF(v->vstg, MSKSTATIC) )
dclerr("may not appear in namelist", v);
else {
v->vnamelist = 1;
v->visused = 1;
v->vsave = 1;
y = 1;
}
np->visused = y;
}
}
/* docommon -- called at the end of procedure declarations, before
equivalences and the procedure body */
LOCAL docommon()
{
register Extsym *extptr;
register chainp q, q1;
struct Dimblock *t;
expptr neltp;
register Namep comvar;
ftnint size;
int i, k, pref, type;
extern int type_pref[];
for(extptr = extsymtab ; extptr<nextext ; ++extptr)
if (extptr->extstg == STGCOMMON && (q = extptr->extp)) {
/* If a common declaration also had a list of variables ... */
q = extptr->extp = revchain(q);
pref = 1;
for(k = TYCHAR; q ; q = q->nextp)
{
comvar = (Namep) (q->datap);
if(comvar->vdcldone == NO)
vardcl(comvar);
type = comvar->vtype;
if (pref < type_pref[type])
pref = type_pref[k = type];
if(extptr->extleng % typealign[type] != 0) {
dclerr("common alignment", comvar);
--nerr; /* don't give bad return code for this */
#if 0
extptr->extleng = roundup(extptr->extleng, typealign[type]);
#endif
} /* if extptr -> extleng % */
/* Set the offset into the common block */
comvar->voffset = extptr->extleng;
comvar->vardesc.varno = extptr - extsymtab;
if(type == TYCHAR)
size = comvar->vleng->constblock.Const.ci;
else
size = typesize[type];
if(t = comvar->vdim)
if( (neltp = t->nelt) && ISCONST(neltp) )
size *= neltp->constblock.Const.ci;
else
dclerr("adjustable array in common", comvar);
/* Adjust the length of the common block so far */
extptr->extleng += size;
} /* for */
extptr->extype = k;
/* Determine curno and, if new, save this identifier chain */
q1 = extptr->extp;
for (q = extptr->allextp, i = 0; q; i++, q = q->nextp)
if (struct_eq((chainp)q->datap, q1))
break;
if (q)
extptr->curno = extptr->maxno - i;
else {
extptr->curno = ++extptr->maxno;
extptr->allextp = mkchain((char *)extptr->extp,
extptr->allextp);
}
} /* if extptr -> extstg == STGCOMMON */
/* Now the hash table entries have STGCOMMON, vdcldone, voffset, and
varno. And the common block itself has its full size in extleng. */
} /* docommon */
/* copy_data -- copy the Namep entries so they are available even after
the hash table is empty */
copy_data (list)
chainp list;
{
for (; list; list = list -> nextp) {
Namep namep = ALLOC (Nameblock);
int size, nd, i;
struct Dimblock *dp;