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  1. #include <iostream>
  2. #include <type_traits>
  3.  
  4. using namespace std;
  5.  
  6. int main() {
  7. 	auto f = [](auto x, auto y = std::decay_t<decltype(x)>{}) { };
  8.  
  9. 	f(0);
  10.  
  11. 	return 0;
  12. }
Compilation error #stdin compilation error #stdout 0s 0KB
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stdin
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Standard input is empty
compilation info 
prog.cpp:9:2: error: no matching function for call to object of type '(lambda at prog.cpp:7:11)'
        f(0);
        ^
prog.cpp:7:11: note: candidate template ignored: couldn't infer template argument ''
        auto f = [](auto x, auto y = std::decay_t<decltype(x)>{}) { };
                 ^
1 error generated.
stdout
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Standard output is empty
https://ideone.com/EyLYaL
language:
C++14 (clang 8.0)
created:
7 years ago
visibility:
public

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