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Published in:
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2018 | OriginalPaper | Chapter

15. Runtime Errors and Exceptions

Authors : Ivor Horton, Peter Van Weert

Published in: Beginning C++17

Publisher: Apress

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Abstract

Exceptions are used to signal errors or unexpected conditions in a program. While other error-handling mechanisms do exist, exceptions generally lead to simpler, cleaner code, in which you are less likely to miss an error.

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Footnotes
1
You shouldn’t even call std::exit() from a terminate handler because that again may result in undefined behavior. Consult your Standard Library if you want to know the subtle differences between the various program termination functions.
 
2
If you’re not careful, throwing from a noexcept(false) may very well still trigger a call to std::terminate(). Details are again out of scope. Bottom line: unless you really know what you’re doing, never throw exceptions from a destructor!
 
3
Concretely, the compiler implicitly generates the noexcept specification for a destructor without an explicit noexcept(...) specification unless the type of one of the subobjects of its class has a destructor that is not noexcept.
 
Metadata
Title
Runtime Errors and Exceptions
Authors
Ivor Horton
Peter Van Weert
Copyright Year
2018
Publisher
Apress
Book
Beginning C++17

Print ISBN: 978-1-4842-3365-8

Electronic ISBN: 978-1-4842-3366-5

Copyright Year: 2018

DOI
https://doi.org/10.1007/978-1-4842-3366-5_15

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