[Lilypond-auto] [LilyIssues-auto] [testlilyissues:issues] #5650 Use C++11 "override" keyword

[Auto mailings of changes to Lily Issues via Testlilyissues-auto]

Separate DECLARE_CLASSNAME() from VIRTUAL_COPY_CONSTRUCTOR()

https://codereview.appspot.com/551320043

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[issues:#5650] Use C++11 "override" keyword

Status: Started
Created: Wed Jan 01, 2020 10:06 PM UTC by Dan Eble
Last Updated: Wed Jan 01, 2020 10:09 PM UTC
Owner: Dan Eble

1: Remove unnecessary include and namespace use

2: Check name in DECLARE_CLASSNAME()

3: Separate DECLARE_CLASSNAME() from VIRTUAL_COPY_CONSTRUCTOR()

4: Eliminate VIRTUAL_COPY_CONSTRUCTOR()

Just write out the virtual clone() function.

5: Use C++11 "override" keyword throughout the code

The chosen style is to state "virtual" for the base function only, because "override" implies "virtual".

6: Compile with -Werror=suggest-override, when supported

This fails the build if a virtual method is overridden without using the "override" keyword. This complements the standard behavior of failing the build if a virtual method with the "override" keyword does not actually override anything.

https://codereview.appspot.com/551320043

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