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add extra protection against useless shifts.

This commit is contained in:
Vitor Santos Costa 2009-11-20 00:31:09 +00:00
parent 26e4ce7e27
commit 73bba98946
1 changed files with 4 additions and 0 deletions
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4
H/sshift.h
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@ -398,6 +398,8 @@ inline EXTERN Term AtomTermAdjust (Term);
inline EXTERN Term
AtomTermAdjust (Term at)
{
if (at == 0L)
return at;
return (Term)(CharP(at) + HDiff);
}
@ -414,6 +416,8 @@ inline EXTERN Term CodeVarAdjust (Term);
inline EXTERN Term
CodeVarAdjust (Term var)
{
if (var == 0L)
return var;
return (Term)(CharP(var) + HDiff);
}