c++ - Particular form of bind temporary to const reference has no effect -

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given

struct {     void a(void) { std::cout << "a" << std::endl; } };  const &a = a(); /* make copy of , bind */ const &b(a());  /* nothing */  a.a(); /* prints */ b.a(); /* error, same if b doesn't exist */

why second form of "bind temporary const reference" seem equivalent no-op?

this case of most vexing parse, you're declaring function rather const reference a.

you fix using c++11 uniform initialization:

const &b{a()};

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