Bill Wendling b76219b590 [clang][Sema] Use correct array size for diagnostic ...

The diagnostic was confusing and reporting that an array contains far
more elements than it is defined to have, due to casting.

For example, this code:

  double foo[4096];
  ((char*)foo)[sizeof(foo)];

warns that the "index 32768 is past the end of the array (which contains
32768 elements)."

Reviewed By: serge-sans-paille, aaron.ballman

Differential Revision: https://reviews.llvm.org/D135920

2022-10-20 11:56:49 -07:00

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