diogo/yap-6.3
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more fixes for overflows in copy_term with attributed variables (not necessarily).

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git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@1131 b08c6af1-5177-4d33-ba66-4b1c6b8b522a
This commit is contained in:
vsc 2004-09-09 20:00:59 +00:00
parent 3c44b02093
commit c042f13930
3 changed files with 18 additions and 15 deletions
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2
C/attvar.c
View File

@ -81,7 +81,7 @@ CopyAttVar(CELL *orig, CELL ***to_visit_ptr, CELL *res)
/* add a new attributed variable */ /* add a new attributed variable */
newv = (attvar_record *)Yap_ReadTimedVar(DelayedVars); newv = (attvar_record *)Yap_ReadTimedVar(DelayedVars);
if (H0 - (CELL *)newv < 1024+(2*NUM_OF_ATTS)) if (H0 - (CELL *)newv < 1024+(2*NUM_OF_ATTS))
return(FALSE); return FALSE;
RESET_VARIABLE(&(newv->Done)); RESET_VARIABLE(&(newv->Done));
newv->sus_id = attvars_ext; newv->sus_id = attvars_ext;
RESET_VARIABLE(&(newv->Value)); RESET_VARIABLE(&(newv->Value));

2
C/tracer.c
View File

@ -120,6 +120,8 @@ low_level_trace(yap_low_level_port port, PredEntry *pred, CELL *args)
/* extern int gc_calls; */ /* extern int gc_calls; */
vsc_count++; vsc_count++;
if (vsc_count < 464900)
return;
#ifdef COMMENTED #ifdef COMMENTED
// if (vsc_count == 218280) // if (vsc_count == 218280)
// vsc_xstop = 1; // vsc_xstop = 1;

29
C/utilpreds.c
View File

@ -64,6 +64,7 @@ clean_dirty_tr(tr_fr_ptr TR0) {
if (IsVarTerm(p)) { if (IsVarTerm(p)) {
RESET_VARIABLE(p); RESET_VARIABLE(p);
} else { } else {
/* copy downwards */
TrailTerm(TR0+1) = TrailTerm(pt); TrailTerm(TR0+1) = TrailTerm(pt);
TrailTerm(TR0) = TrailTerm(TR0+2) = p; TrailTerm(TR0) = TrailTerm(TR0+2) = p;
pt+=2; pt+=2;
@ -254,7 +255,7 @@ copy_complex_term(register CELL *pt0, register CELL *pt0_end, CELL *ptf, CELL *H
/* restore our nice, friendly, term to its original state */ /* restore our nice, friendly, term to its original state */
HB = HB0; HB = HB0;
reset_trail(TR0); clean_dirty_tr(TR0);
return 0; return 0;
overflow: overflow:
@ -290,7 +291,7 @@ copy_complex_term(register CELL *pt0, register CELL *pt0_end, CELL *ptf, CELL *H
*pt0 = (CELL)to_visit[3]; *pt0 = (CELL)to_visit[3];
} }
#endif #endif
clean_dirty_tr(TR0); reset_trail(TR0);
return -2; return -2;
} }
@ -309,20 +310,20 @@ CopyTerm(Term inp) {
Hi = H+1; Hi = H+1;
H += 2; H += 2;
if ((res = copy_complex_term(Hi-2, Hi-1, Hi, Hi)) < 0) { if ((res = copy_complex_term(Hi-2, Hi-1, Hi, Hi)) < 0) {
ARG1 = t; ARG3 = t;
if (res == -1) { /* handle overflow */ if (res == -1) { /* handle overflow */
if (!Yap_gc(2, ENV, P)) { if (!Yap_gc(3, ENV, P)) {
Yap_Error(OUT_OF_STACK_ERROR, TermNil, Yap_ErrorMessage); Yap_Error(OUT_OF_STACK_ERROR, TermNil, Yap_ErrorMessage);
return(FALSE); return(FALSE);
} }
t = Deref(ARG1); t = Deref(ARG3);
goto restart_attached; goto restart_attached;
} else { /* handle overflow */ } else { /* handle overflow */
if (!Yap_ExpandPreAllocCodeSpace(0)) { if (!Yap_ExpandPreAllocCodeSpace(0)) {
Yap_Error(OUT_OF_HEAP_ERROR, TermNil, Yap_ErrorMessage); Yap_Error(OUT_OF_HEAP_ERROR, TermNil, Yap_ErrorMessage);
return(FALSE); return(FALSE);
} }
t = Deref(ARG1); t = Deref(ARG3);
goto restart_attached; goto restart_attached;
} }
} }
@ -345,20 +346,20 @@ CopyTerm(Term inp) {
{ {
int res; int res;
if ((res = copy_complex_term(ap-1, ap+1, Hi, Hi)) < 0) { if ((res = copy_complex_term(ap-1, ap+1, Hi, Hi)) < 0) {
ARG1 = t; ARG3 = t;
if (res == -1) { /* handle overflow */ if (res == -1) { /* handle overflow */
if (!Yap_gc(2, ENV, P)) { if (!Yap_gc(3, ENV, P)) {
Yap_Error(OUT_OF_STACK_ERROR, TermNil, Yap_ErrorMessage); Yap_Error(OUT_OF_STACK_ERROR, TermNil, Yap_ErrorMessage);
return(FALSE); return(FALSE);
} }
t = Deref(ARG1); t = Deref(ARG3);
goto restart_list; goto restart_list;
} else { /* handle overflow */ } else { /* handle overflow */
if (!Yap_ExpandPreAllocCodeSpace(0)) { if (!Yap_ExpandPreAllocCodeSpace(0)) {
Yap_Error(OUT_OF_HEAP_ERROR, TermNil, Yap_ErrorMessage); Yap_Error(OUT_OF_HEAP_ERROR, TermNil, Yap_ErrorMessage);
return(FALSE); return(FALSE);
} }
t = Deref(ARG1); t = Deref(ARG3);
goto restart_list; goto restart_list;
} }
} }
@ -380,20 +381,20 @@ CopyTerm(Term inp) {
{ {
int res; int res;
if ((res = copy_complex_term(ap, ap+ArityOfFunctor(f), HB0+1, HB0)) < 0) { if ((res = copy_complex_term(ap, ap+ArityOfFunctor(f), HB0+1, HB0)) < 0) {
ARG1 = t; ARG3 = t;
if (res == -1) { if (res == -1) {
if (!Yap_gc(2, ENV, P)) { if (!Yap_gc(3, ENV, P)) {
Yap_Error(OUT_OF_STACK_ERROR, TermNil, Yap_ErrorMessage); Yap_Error(OUT_OF_STACK_ERROR, TermNil, Yap_ErrorMessage);
return(FALSE); return(FALSE);
} }
t = Deref(ARG1); t = Deref(ARG3);
goto restart_appl; goto restart_appl;
} else { /* handle overflow */ } else { /* handle overflow */
if (!Yap_ExpandPreAllocCodeSpace(0)) { if (!Yap_ExpandPreAllocCodeSpace(0)) {
Yap_Error(OUT_OF_HEAP_ERROR, TermNil, Yap_ErrorMessage); Yap_Error(OUT_OF_HEAP_ERROR, TermNil, Yap_ErrorMessage);
return(FALSE); return(FALSE);
} }
t = Deref(ARG1); t = Deref(ARG3);
goto restart_appl; goto restart_appl;
} }
} }