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From: "e.tadeu at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/60872] New: Cannot memcpy array of restricted pointers
Date: Thu, 17 Apr 2014 12:14:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60872

            Bug ID: 60872
           Summary: Cannot memcpy array of restricted pointers
           Product: gcc
           Version: 4.7.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: e.tadeu at gmail dot com

When trying to use memcpy to copy arrays of restricted pointers, it fails with
the message:


  error: '__restrict_' qualifiers cannot be applied to 'void'


This is a failing testcase:

#include <iostream>
#include <cstring>

typedef double* __restrict__ T;

void do_copy(T* a, const T* b)
{
    memcpy(a, b, sizeof(T) * 3);
}

int main()
{
    double x[3] = {1.5, 2.5, 3.5};

    double *p0[3] = {&x[2], &x[1], &x[0]};
    double *p1[3];

    do_copy(p1, p0);

    std::cout << *p1[2] << std::endl;

    return 0;
}