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__gnu_cxx::recursive_init_error(3cxx) __gnu_cxx::recursive_init_error(3cxx)


__gnu_cxx::recursive_init_error - Exception thrown by __cxa_guard_acquire.


#include <cxxabi.h>

Inherits std::exception.

Public Member Functions

virtual const char * what () const _GLIBCXX_TXN_SAFE_DYN noexcept

Detailed Description

Exception thrown by __cxa_guard_acquire.

C++ 2011 6.7 [stmt.dcl]/4: If control re-enters the declaration recursively while the variable is being initialized, the behavior is undefined.

Since we already have a library function to handle locking, we might as well check for this situation and throw an exception. We use the second byte of the guard variable to remember that we're in the middle of an initialization.

Definition at line 696 of file cxxabi.h.

Member Function Documentation

virtual const char * std::exception::what () const [virtual], [noexcept], [inherited]

Returns a C-style character string describing the general cause of the current error.

Reimplemented in std::ios_base::failure, std::bad_alloc, std::logic_error, std::runtime_error, std::bad_exception, std::bad_weak_ptr, std::bad_function_call, std::experimental::fundamentals_v1::bad_any_cast, std::future_error, std::bad_cast, and std::bad_typeid.


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Thu Jul 13 2023 libstdc++