Revert "use sizeof(expr) for unevaluated syntax check"

Using sizeof(expr) can trigger a compile-time error,
"lambda expressions are not allowed in an unevaluated context", when passing
expression containing lambda, like a std algorithm. This error is considered
a standard defect, as it is meant to prevent lambdas in decltype
or templates, but not in sizeof.

This reverts commit 227598af47e4d46f06cfcc879f206eb34e681275.

0 files changed, 0 insertions, 0 deletions