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Fix r_reg_next_diff (thanks defragger!)

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This commit is contained in:
pancake 2014-06-27 15:33:25 +02:00
parent a9907ec4f5
commit ab05fbd9d3
1 changed files with 11 additions and 10 deletions
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21
libr/reg/reg.c
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@ -347,15 +347,16 @@ R_API RRegItem *r_reg_next_diff(RReg *reg, int type, const ut8* buf, int buflen,
return NULL;
arena = reg->regset[type].arena;
delta = prev_ri? prev_ri->offset+prev_ri->size: 0;
if (delta>=arena->size || delta >= buflen)
return NULL;
dist = r_mem_mem (arena->bytes+delta, arena->size, buf, buflen);
if (dist) {
RRegItem *ri = r_reg_get_at (reg, regsize, type,
(int)(size_t)(dist-arena->bytes));
if (ri) return ri;
return r_reg_next_diff (reg, type,
buf, buflen, ri, regsize);
}
for (;;) {
if (delta>=arena->size || delta >= buflen)
break;
dist = r_mem_mem (arena->bytes+delta, arena->size, buf, buflen);
if (dist) {
RRegItem *ri = r_reg_get_at (reg, regsize, type,
(int)(size_t)(dist-arena->bytes));
if (ri) return ri;
}
delta += regsize;
} while (delta<buflen);
return NULL;
}