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aa7c868523
Use a different way to write StaticAssertExpr() that does not require the GCC extension statement expressions. For C, we put the static_assert into a struct. This appears to be a common approach. We still need to keep the fallback implementation to support buggy MSVC < 19.33. For C++, we put it into a lambda expression. (The C approach doesn't work; it's not permitted to define a new type inside sizeof.) Reviewed-by: Jelte Fennema-Nio <postgres@jeltef.nl> Discussion: https://www.postgresql.org/message-id/flat/5fa3a9f5-eb9a-4408-9baf-403d281f8b10%40eisentraut.org