efriedma-quic wrote:
I targeted all overflows with this fix because we were missing diagnostics for
all overflows. For example, "enum{x=999999*999999};" only produces a pedantic
warning on clang 18. So if we need the extra flexibility, we should just add
it for everything.
I think a default-error, sfinae-failing diagnostic should be pretty safe;
everyone will get the correct diagnostics by default, and some narrow subset of
people can disable them if they cause issues.
MSVC ignores most forms of overflow by default (/W2 enables warnings); gcc
errors by default, but allows degrading the error to a warning with
-fpermissive.
https://github.com/llvm/llvm-project/pull/102390
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