tmp/tmppgwzq98h/{from.md → to.md}
RENAMED
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@@ -68,11 +68,17 @@ to the last element of the same array object, the expression
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`-((P)-((Q)+1))`, and has the value zero if the expression `P` points
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one past the last element of the array object, even though the
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expression `(Q)+1` does not point to an element of the array object.
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Unless both pointers point to elements of the same array object, or one
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past the last element of the array object, the behavior is
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undefined.[^
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If the value 0 is added to or subtracted from a pointer value, the
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result compares equal to the original pointer value. If two pointers
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point to the same object or both point one past the end of the same
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array or both are null, and the two pointers are subtracted, the result
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| 68 |
`-((P)-((Q)+1))`, and has the value zero if the expression `P` points
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one past the last element of the array object, even though the
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expression `(Q)+1` does not point to an element of the array object.
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Unless both pointers point to elements of the same array object, or one
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past the last element of the array object, the behavior is
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+
undefined.[^26]
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For addition or subtraction, if the expressions `P` or `Q` have type
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“pointer to cv `T`”, where `T` is different from the cv-unqualified
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array element type, the behavior is undefined. In particular, a pointer
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to a base class cannot be used for pointer arithmetic when the array
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contains objects of a derived class type.
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If the value 0 is added to or subtracted from a pointer value, the
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result compares equal to the original pointer value. If two pointers
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point to the same object or both point one past the end of the same
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array or both are null, and the two pointers are subtracted, the result
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