Can I has grammar?
summary
Reads the C++ standard grammar (about 20 pages) and shows concrete, compile-tested corner cases: extern nesting ambiguity that different compilers accept or reject (Microsoft rejects one form, GCC rejects the other, another accepts both), parenthesis-wrapped declarators producing new vexing-parse variants, a quick script that sprinkles elaborated-type-specifier everywhere to trigger parser failures, and using alternative token `compl` to force destructor-vs-expression disambiguation — practical examples that expose real compiler bugs.
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