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- Subject: OP_CONCAT in lvm.c
 
- From: Dibyendu Majumdar <mobile@...>
 
- Date: Sat, 28 Mar 2015 13:14:14 +0000
 
Hi,
In the implementation of OP_CONCAT in lvm.c (shown below):
      vmcase(OP_CONCAT) {
        int b = GETARG_B(i);
        int c = GETARG_C(i);
        StkId rb;
        L->top = base + c + 1;  /* mark the end of concat operands */
        Protect(luaV_concat(L, c - b + 1));
        ra = RA(i);  /* 'luav_concat' may invoke TMs and move the stack */
-->    rb = b + base;
        setobjs2s(L, ra, rb);
        checkGC(L, (ra >= rb ? ra + 1 : rb));
        L->top = ci->top;  /* restore top */
        vmbreak;
      }
Should the line marked by arrow not be following?
       rb = base + b
Regards
Dibyendu