[PATCH] D138270: [clang][Sema] Skip checking int expressions for overflow in constexpr functions

[Timm Bäder via Phabricator via cfe-commits]

tbaeder added a comment.

Output for that test case is:

  ./array.cpp:1:16: error: constexpr function never produces a constant expression [-Winvalid-constexpr]
  constexpr void f() {
                 ^
  ./array.cpp:3:23: note: value 1292785156096 is outside the range of representable values of type 'int'
      arr[1024*1024*1024*1204];
                        ^
  ./array.cpp:3:28: warning: expression result unused [-Wunused-value]
      arr[1024*1024*1024*1204];
      ~~~ ~~~~~~~~~~~~~~~~~~~^
  1 warning and 1 error generated.

The first overflow warning is missing. That seems to be new though, I don't get that warning with clang 14 either.


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https://reviews.llvm.org/D138270