http://llvm.org/bugs/show_bug.cgi?id=22845
Bug ID: 22845
Summary: [C++14] new expression should cause compilation error
if expression in a noptr-new-declarator is erroneous
Product: clang
Version: unspecified
Hardware: All
OS: All
Status: NEW
Severity: normal
Priority: P
Component: C++14
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Classification: Unclassified
Created attachment 14009
--> http://llvm.org/bugs/attachment.cgi?id=14009&action=edit
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. http://melpon.org/wandbox/permlink/TLTsz1iiAVM8DbV0
========================== sample code ==========================
int main()
{
constexpr int i = 1;
int* p = new int[i]{ 1, 2 };
delete[] p;
}
========================== sample code ==========================
cf. http://melpon.org/wandbox/permlink/mEhdOsjtC2ztiFbb
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.
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