[Bug c++/95993] New: the error of multi-array init in gcc 10.1

[Bug c++/95993] New: the error of multi-array init in gcc 10.1

[webrown.cpp at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95993

            Bug ID: 95993
           Summary: the error of multi-array init in gcc 10.1
           Product: gcc
           Version: 10.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: chengcongxiu at huawei dot com
                CC: webrown.cpp at gmail dot com
  Target Milestone: ---
                CC: webrown.cpp at gmail dot com

the main2.cpp as follow:

#include <iostream>
using namespace std;
void FuncA(int arg1, int arg2)
{
  int i = 0, j = 0;
  unsigned char noConst = 2;
  const unsigned char index1 = 16;
  const unsigned char index2 = noConst;
  unsigned char temp3[index1][index2] = { 0 };
  for(i = 0; i < index1; i++) {
    for(j = 0; j < index2; j++) {
      printf("%d\t", temp3[i][j]);
    }
    printf("\n");
  }
}
int main()
{
  FuncA(0, 0);
  return 0;
}

./arm64be/bin/aarch64_be-linux-gnu-g++ main2.cpp -static -o app

./app0       
the result is:

0       0
0       83
65      24
0       0
0       0
0       1
28      0
0       0
0       64
0       128
3       232
0       0
0       64
0       128
3       248

everyone know what's wrong? is the internal error of gcc?

[Bug c++/95993] the error of VLA multi-array init in gcc 10.1

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95993

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
This is using an GNU extension because VLAs are not part of C++ standard.

[Bug c++/95993] the error of VLA multi-array init in gcc 10.1

[msebor at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95993

Martin Sebor <msebor at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |DUPLICATE
             Status|UNCONFIRMED                 |RESOLVED
                 CC|                            |msebor at gcc dot gnu.org
           Keywords|                            |wrong-code

--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
This is due to a bug in the initialization of multidimensional VLAs.  Either
such initialization should be corrected or rejected with an error.  The bug is
being tracked in pr70075.

*** This bug has been marked as a duplicate of bug 70075 ***