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Inconsistent wording in [new.delete.single] and [new.delete.array] #793

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jwakely opened this issue Jul 5, 2016 · 4 comments
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Inconsistent wording in [new.delete.single] and [new.delete.array] #793

jwakely opened this issue Jul 5, 2016 · 4 comments

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@jwakely
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jwakely commented Jul 5, 2016

[new.delete.single]/12:

Requires: ptr shall be a null pointer or its value shall be a value returned by an earlier call to the (possibly replaced) operator new(std::size_t) or operator new(std::size_t,const std::nothrow_t&) which has not been invalidated by an intervening call to operator delete(void*) or operator delete(void*, std::size_t).

[new.delete.array]/11:

Requires: ptr shall be a null pointer or its value shall be the value returned by an earlier call to
operator new[](std::size_t) or operator new[](std::size_t,const std::nothrow_t&) which
has not been invalidated by an intervening call to operator delete[](void*) or operator delete[]( void*, std::size_t).

Firstly, ptr should be using \tcode not \textit.

Secondly, why is one "its value shall be a value" and the other "its value shall be the value"?

Thirdly, why does the first state "possibly-replaced" but not the second?
@jwakely
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jwakely commented Jul 5, 2016 •
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And why does [new.delete.array] have the Requires about safely-derived pointers after the Required behavior?

@jwakely
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jwakely commented Jul 6, 2016

(some of these problems were already fixed at e51a215 by the P0035R4 changes)

@jensmaurer
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Current state:

[new.delete.single] p12
Requires: ptr shall be a null pointer or its value shall represent the address of a block of memory
allocated by an earlier call to a (possibly replaced) operator new(std::size_t) or operator new(std ::size_t, std::align_val_t) which has not been invalidated by an intervening call to operator delete.

[new.delete.array] p11
Requires: ptr shall be a null pointer or its value shall represent the address of a block of memory
allocated by an earlier call to a (possibly replaced) operator new[](std::size_t) or operator new[](std::size_t, std::align_val_t) which has not been invalidated by an intervening call to
operator delete[].

@jensmaurer
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Looks like it's fixed.

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