[PATCH] Allow return type deduction for templates in delayed parsing mode.

Reid Kleckner rnk at google.com
Tue Oct 29 17:20:45 PDT 2013

  Are you sure this is an MSVC-compatible change?  MSVC allows late specified return types, and does so while delaying the parsing of the body.  Consider this test case, which cl accepts and clang -fno-delayed-template-parsing rejects:

    extern "C" int puts(const char *s);
    template <typename T>
    auto foo(T x) -> decltype(x) {
      return x;
    void bar() { puts("bar"); }
    int main() { return foo(0); }


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