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c++boostlock-free

Declaration error when defining a boost library lock free queue in c++

I am new to c++ and I am trying to create a lock free queue in c++98 using the boost library (version 1.53). When I compile my code in c++98 I get the following error:

error: ‘q’ was not declared in this scope
  boost::lockfree::queue<T *, boost::lockfree::capacity<SIZE>> q;

When I remove the capacity option (boost::lockfree::capacity) the error appears to disappear. What am I missing here and doing wrong?

The line that causes the error exists by itself within the constructor and is as follows:

    boost::lockfree::queue<T *, boost::lockfree::capacity<SIZE>> q;
Solution

  • Before C++11, << or >> in any place (including templates argument list) would be interpreted as operator. You need to separate every bracket with a space:

    boost::lockfree::queue<T *, boost::lockfree::capacity<SIZE> > q;

    With C++11 or later, your original line should compile as-is.