c++ - Disable "deletion of copy constructor when move constructor is avaliable" on Clang -

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c++ - Disable "deletion of copy constructor when move constructor is avaliable" on Clang -

looking here on stackoverflow found out on clang++ when using c++11 standard, if have defined move constructor class, implicit constructor generation disabled, i.e. re-create constructor "explicted deleted".

is there way disable behavior?

also, behavior standardized? because don't have same behavior in gcc.

is there way disable behavior?

no. can always:

a(const a&) = default;

though i'm unsure if clang implements defaulted re-create constructors.

also, behavior standardized?

yes. [class.copy]/p7:

if class definition not explicitly declare re-create constructor, 1 declared implicitly. if class definition declares move constructor or move assignment operator, implicitly declared re-create constructor defined deleted; ...

...

because don't have same behavior in gcc.

which version? would've guessed latest gcc version had same behavior clang. not have available experiment with.

c++ c++11 clang clang++

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