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If NULL were defined as “((char *)0),” wouldn that make function calls which pass an uncast NULL work?

April 26, 2017defined function null pass uncast

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If NULL were defined as “((char *)0),” wouldn that make function calls which pass an uncast NULL work?

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Not in general. The complication is that there are machines which use different internal representations for pointers to different types of data. A cast is still required to tell the compiler which kind of null pointer is required, since it may be different from (char *)0.