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I know that the following statement is interpreted as a function declaration instead of a variable definition

boost::system::system_error sys_err(boost::system::error_code());

Is there any simple trick to turn it into a one-liner variable definition which is what I intend? I don't quite like the writing

boost::system::system_error sys_err(0, boost::system::system_category());
Fabio says Reinstate Monica
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Lingxi
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    `std::system_error sys_err{std::error_code()};` – Dúthomhas Nov 14 '15 at 17:27
  • @Dúthomhas You're correct. My fault not to make my intention clear. I'm actually using Boost, and I don't want my code to have a dependency on C++11. – Lingxi Nov 14 '15 at 17:36
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    The way compilers interpret this ambiguous syntax is called "most vexing parse". On SO we even have a tag for it. If you read the [tag's description](http://stackoverflow.com/tags/most-vexing-parse/info) you can even find the answer to your question! :-) – Fabio says Reinstate Monica Nov 14 '15 at 18:22

1 Answers1

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Dúthomhas' answer will do, provided your compiler supports at least C++11. For a more universal solution you can wrap the argument in a extra pair of parentheses: boost::system::system_error sys_err((boost::system::error_code()));

Alberto M
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