http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52216
Bug #: 52216
Summary: [C++11][noexcept] Wrong exception deduction for some
forms of placement new
Classification: Unclassified
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
AssignedTo: [email protected]
ReportedBy: [email protected]
gcc 4.7.0 20111210 (experimental) rejects the following program:
//--
#include <new>
int n;
static_assert(!noexcept(::new (std::nothrow) int[n]), "");
//--
Further the following program aborts even though it shouldn't:
//---
#include <new>
extern "C" void abort();
void test_too_small(int n) {
new (std::nothrow) int[n]{1,2,3,4};
}
int main()
{
bool f = false;
try {
test_too_small(3);
} catch (...) {
f = true;
}
if (!f)
abort();
}
//---
Rationale: According to [expr.new] p7:
"[..] if the new-initializer is a bracedinit-list for which the number of
initializer-clauses exceeds the number of elements to initialize, no storage
is obtained and the new-expression terminates by throwing an exception of a
type that would match a handler (15.3) of type std::bad_array_new_length
(18.6.2.2)."
I guess that part of the problem is due to the currently missing support of
type std::bad_array_new_length.
