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Fix off-by-one errors in maxslot calculation of trace recorder.

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Mike Pall 2010-09-12 03:14:17 +02:00
parent 4da03965c0
commit 52f75e9a5c
1 changed files with 2 additions and 2 deletions
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4
src/lj_record.c
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@ -628,7 +628,7 @@ static void rec_ret(jit_State *J, BCReg rbase, ptrdiff_t gotresults)
/* Copy result to destination slot. */
BCReg dst = bc_a(*(frame_contpc(frame)-1));
J->base[dst] = gotresults ? J->base[cbase+rbase] : TREF_NIL;
if (dst > J->maxslot) J->maxslot = dst+1;
if (dst >= J->maxslot) J->maxslot = dst+1;
} else if (cont == lj_cont_nop) {
/* Nothing to do here. */
} else if (cont == lj_cont_cat) {
@ -659,7 +659,7 @@ static void rec_varg(jit_State *J, BCReg dst, ptrdiff_t nresults)
nresults = nvararg;
J->maxslot = dst + nvararg;
} else if (dst + nresults > J->maxslot) {
J->maxslot = dst + nresults + 1;
J->maxslot = dst + nresults;
}
for (i = 0; i < nresults; i++)
J->base[dst+i] = i < nvararg ? J->base[i - nvararg - 1] : TREF_NIL;