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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [C++14] new expression should cause compilation error if expression in a noptr-new-declarator is erroneous"
href="http://llvm.org/bugs/show_bug.cgi?id=22845">22845</a>
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<th>Summary</th>
<td>[C++14] new expression should cause compilation error if expression in a noptr-new-declarator is erroneous
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>All
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<th>OS</th>
<td>All
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>C++14
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>kariya_mitsuru@hotmail.com
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<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
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<th>Classification</th>
<td>Unclassified
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<div>
<pre>Created <span class=""><a href="attachment.cgi?id=14009" name="attach_14009" title="clang++ -v">attachment 14009</a> <a href="attachment.cgi?id=14009&action=edit" title="clang++ -v">[details]</a></span>
clang++ -v
The both sample codes below should cause compilationn error but they are
compiled successfully.
========================== sample code ==========================
int main()
{
constexpr int i = -1;
int* p = new int[i];
delete[] p;
}
========================== sample code ==========================
cf. <a href="http://melpon.org/wandbox/permlink/TLTsz1iiAVM8DbV0">http://melpon.org/wandbox/permlink/TLTsz1iiAVM8DbV0</a>
========================== sample code ==========================
int main()
{
constexpr int i = 1;
int* p = new int[i]{ 1, 2 };
delete[] p;
}
========================== sample code ==========================
cf. <a href="http://melpon.org/wandbox/permlink/mEhdOsjtC2ztiFbb">http://melpon.org/wandbox/permlink/mEhdOsjtC2ztiFbb</a>
Tthe C++14 standard 5.3.4[expr.new]/p.7 says,
The expression in a noptr-new-declarator is erroneous if:
--- the expression is of non-class type and its value before converting to
std::size_t is less than zero;
...
--- the new-initializer is a braced-init-list and the number of array
elements
for which initializers are provided (including the terminating '\0' in
a
string literal (2.13.5)) exceeds the number of elements to initialize.
If the expression, after converting to std::size_t, is a core constant
expression
and the expression is erroneous, the program is ill-formed. ...
So, I think that the sample codes above should cause compilation error.</pre>
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