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Section: 17.6.3.4 [new.delete.placement] Status: TC1 Submitter: Steve Clamage Opened: 1998-10-28 Last modified: 2016-01-28
Priority: Not Prioritized
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Duplicate of: 196
Discussion:
Section 18.5.1.3 contains the following example:
[Example: This can be useful for constructing an object at a known address:
char place[sizeof(Something)];
Something* p = new (place) Something();
-end example]
First code line: "place" need not have any special alignment, and the following constructor could fail due to misaligned data.
Second code line: Aren't the parens on Something() incorrect? [Dublin: the LWG believes the () are correct.]
Examples are not normative, but nevertheless should not show code that is invalid or likely to fail.
Proposed resolution:
Replace the first line of code in the example in 17.6.3.4 [new.delete.placement] with:
void* place = operator new(sizeof(Something));