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free store free store

free store [ISO/IEC 14882-2014]
Storage managed by the C++ allocation and deallocation functions ::operator new(std::size_t), ::operator delete(void*), their array forms ::operator new[](std::size_t), ::operator delete[](void*), overloads of said functions on std::nothrow_t, any user-defined replacements for said functions, as well as any such functions defined as a member of a class. Storage in the free store is distinct from storage managed by the C functions calloc(), free(), malloc(), and realloc().

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gcc gcc

gcc
GCC
An open source C and C++ compiler. More information can be found at https://gcc.gnu.org/.

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ill-formed ill-formed

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ill-formed program ill-formed program

ill-formed program [ISO/IEC 14882-2014]
A C++ program that is not well-formed; that is, a program not constructed according to the syntax rules, diagnosable semantic rules, and the one-definition rule.

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SFINAE SFINAE

SFINAE (Substitution Failure is Not An Error) (SFINAE)
A language rule applied by the compiler during overload resolution involving templates. In some contexts, when substituting a template type parameter fails, the specialization is discarded from the overload set instead of causing a compile error. This feature is used in template metaprogramming.

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