bin/52691: str[n][case]cmp may cause segmentation violationwith NULL pointers passed

[Tony Finch]

Seva Gluschenko <gvs at rinet.ru> wrote:
>
>Well, sir, can you please quote me some ISO C89 or another standard
>which allows str*cmp not to care about NULL pointers?

ISO/IEC 9899:1990 says in section 7.1.7 Use of library functions:
"If an argument to a function has an invalid value (such as a value
outside the domain of the function, or a pointer outside the address
space of the program, or a null pointer), the behaviour is undefined."

Tony.
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