[issue27097] ceval: Wordcode follow up, explicit unsigned short read

[STINNER Victor]

STINNER Victor added the comment:

> +#define NEXTOPARG()     (oparg = *(unsigned short*)next_instr, opcode = OPOF(oparg), oparg = ARGOF(oparg), next_instr += 2)

I dislike this approach. I would prefer to use the unsigned short* type for next_instr, and put an assertion when next_instr is first assigned.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue27097>
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