http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56772
Bug #: 56772
Summary: placement new operator does not work inside function
template.
Classification: Unclassified
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
AssignedTo: [email protected]
ReportedBy: [email protected]
g++-4.7.0 emits an error for the following piece of code.
------------------------- BEGIN -----------------------------
#include <cstddef>
#include <new>
template <typename T = size_t>
void f ()
{
size_t coord [2][2];
new (&coord) size_t [2][2]
{
{0,0},
{0,0},
};
}
int main ()
{
f<>();
}
------------------------- END -----------------------------
The error message was
error: parenthesized initializer in array new [-fpermissive]
sorry, unimplemented: cannot initialize multi-dimensional array with
initializer
I observed the same behavior on 4.8.0. The problem only occurs inside function
template according to my test. If I made f an ordinary function, the code was
accepted. Clang 3.2 and Visual Studio 2012 all accept the code. These facts led
me to assume this is a bug in g++.
Below is my g++ version.
Reading specs from
/home/meng/gcc/4.7.0/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/specs
COLLECT_GCC=/home/meng/gcc/4.7.0/bin/c++
COLLECT_LTO_WRAPPER=/home/meng/gcc/4.7.0/libexec/gcc/x86_64-unknown-linux-gnu/4.7.0/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: ./configure --prefix=/home/meng/gcc/4.7.0
--enable-languages=c,c++ -disable-multilib
Thread model: posix
gcc version 4.7.0 (GCC)
