diogo/yap-6.3
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fix high arity and nth clause

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This commit is contained in:
Vítor Santos Costa 2013-11-25 18:31:33 +01:00
parent 7a3a4ab32b
commit fae3da8659
1 changed files with 6 additions and 0 deletions
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6
C/cdmgr.c
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@ -5203,6 +5203,7 @@ p_nth_clause( USES_REGS1 )
LogUpdClause *cl;
Int ncls;
Int CurSlot, sl;
if (!IsIntegerTerm(tn))
return FALSE;
ncls = IntegerOfTerm(tn);
@ -5211,8 +5212,11 @@ p_nth_clause( USES_REGS1 )
return FALSE;
PELOCK(47,pe);
if (!(pe->PredFlags & (SourcePredFlag|LogUpdatePredFlag))) {
UNLOCK(pe->PELock);
return FALSE;
}
CurSlot = Yap_StartSlots( PASS_REGS1 );
sl = Yap_InitSlot( ARG4 PASS_REGS );
/* in case we have to index or to expand code */
if (pe->ModuleOfPred != IDB_MODULE) {
UInt i;
@ -5227,6 +5231,8 @@ p_nth_clause( USES_REGS1 )
IPred(pe, 0, CP);
}
cl = Yap_NthClause(pe, ncls);
ARG4 = Yap_GetFromSlot( sl PASS_REGS );
LOCAL_CurSlot = CurSlot;
if (cl == NULL) {
UNLOCK(pe->PELock);
return FALSE;