rspec/rules/S112/cfamily/rule.adoc

== Why is this an issue?

If you throw a general exception type, such as ``++std::exception++``, ``++std::logic_error++`` or ``++std::runtime_error++``, it forces consumers to catch all exceptions, including unknown exceptions they don't necessarily know how to handle.


Instead, either throw a subtype that already exists ( for example in ``++<stdexcept>++`` ), or create your own type that derives from a standard one.

=== Noncompliant code example

[source,cpp]
----
throw std::logic_error("Unexpected null 'user_id' argument."); // Noncompliant
----

=== Compliant solution

[source,cpp]
----
throw std::invalid_argument("Unexpected null 'user_id' argument.");
----

== Resources

* https://cwe.mitre.org/data/definitions/397[MITRE, CWE-397] - Declaration of Throws for Generic Exception
* https://wiki.sei.cmu.edu/confluence/x/_DdGBQ[CERT, ERR07-J.] - Do not throw RuntimeException, Exception, or Throwable
* https://github.com/isocpp/CppCoreGuidelines/blob/036324/CppCoreGuidelines.md#Re-exception-types[{cpp} Core Guidelines E.14] - Use purpose-designed user-defined types as exceptions (not built-in types)

ifdef::env-github,rspecator-view[]

'''
== Implementation Specification
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include::../message.adoc[]

'''
== Comments And Links
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=== on 16 Aug 2016, 13:57:01 Ann Campbell wrote:
Looks good, [~alban.auzeill]

include::../comments-and-links.adoc[]

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