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std::is_debugger_present

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is_debugger_present
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Defined in header <debugging>
bool is_debugger_present() noexcept;
(since C++26)

Attempts to determine if the program is being executed with debugger present. Formally, the behavior of this function is completely implementation-defined.

Contents

[edit] Return value

true if, to the best of its knowledge, the program is executed under a debugger.

[edit] Notes

The intent of this function is allowing printing out extra output to help diagnose problems, executing extra test code, displaying an extra user interface to help in debugging, etc.

This function standardizes many similar existing facilities: under_debugger from boost.test, IsDebuggerPresent() from Win32 API, isDebuggerActive from Catch2, IsDebuggerPresent from Unreal Engine, etc.

Feature-test macro Value Std Feature
__cpp_lib_debugging 202311L (C++26) debugging support library

[edit] Example

[edit] See also

pauses the running program when called
(function) [edit]
calls std::breakpoint if std::is_debugger_present returns true
(function) [edit]