diogo/yap-6.3
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always deref arguments to built-ins.

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This commit is contained in:
Vítor Santos Costa 2014-10-02 14:32:26 +01:00
parent 74c136b986
commit a1022f8237
1 changed files with 3 additions and 1 deletions
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4
C/cmppreds.c
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@ -794,7 +794,9 @@ a_eq(Term t1, Term t2)
{ {
CACHE_REGS CACHE_REGS
/* A =:= B */ /* A =:= B */
int out; Int out;
t1 = Deref(t1);
t2 = Deref(t2);
if (IsVarTerm(t1)) { if (IsVarTerm(t1)) {
Yap_Error(INSTANTIATION_ERROR, t1, "=:=/2"); Yap_Error(INSTANTIATION_ERROR, t1, "=:=/2");