[Bug c++/68266] New: pointers to arrays of excessive size not diagnosed

[msebor at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68266

            Bug ID: 68266
           Summary: pointers to arrays of excessive size not diagnosed
           Product: gcc
           Version: 6.0
            Status: UNCONFIRMED
          Severity: minor
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: msebor at gcc dot gnu.org
  Target Milestone: ---

In C mode, GCC issues an error for pointers to arrays of excessive size such as
the one in the program below.  However, in C++ mode, it fails to diagnose the
same invalid constructs.

$ cat u.cpp && /build/gcc-trunk-svn/gcc/xg++ -B /build/gcc-trunk-svn/gcc -S
-Wall -Wextra -Wpedantic -o /dev/tty u.cpp
typedef __typeof__ (sizeof 0) size_t;

typedef int (*A)[__SIZE_MAX__];
        .file   "u.cpp"
        .ident  "GCC: (GNU) 6.0.0 20151108 (experimental)"
        .section        .note.GNU-stack,"",@progbits
$