33 lines
906 B
Markdown
33 lines
906 B
Markdown
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# JSON_NOEXCEPTION
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```cpp
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#define JSON_NOEXCEPTION
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```
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Exceptions can be switched off by defining the symbol `JSON_NOEXCEPTION`. When defining `JSON_NOEXCEPTION`, `#!cpp try`
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is replaced by `#!cpp if (true)`, `#!cpp catch` is replaced by `#!cpp if (false)`, and `#!cpp throw` is replaced by
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`#!cpp std::abort()`.
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The same effect is achieved by setting the compiler flag `-fno-exceptions`.
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## Default definition
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By default, the macro is not defined.
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```cpp
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#undef JSON_NOEXCEPTION
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```
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## Notes
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The explanatory [`what()`](https://en.cppreference.com/w/cpp/error/exception/what) string of exceptions is not
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available for MSVC if exceptions are disabled, see [#2824](https://github.com/nlohmann/json/discussions/2824).
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## See also
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- [Switch off exceptions](../../home/exceptions.md#switch-off-exceptions) for more information how to switch off exceptions
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## Version history
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Added in version 2.1.0.
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