Add virtual destructors for Http2TxFrame, Http2FrequencyCounter #6348
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randall
approved these changes
Jan 27, 2020
Contributor
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Obviously, this is the way. |
Contributor
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Assuming optimal vague linkage, there will only be one copy of the virtual table for each dynamic class in memory. An additional virtual function only adds a pointer and a this pointer offset to the virtual table. So a small price to cover the case when the virtual destructor is actually needed (instance of a derived class is created in the heap and deleted using a pointer to its base class). https://stackoverflow.com/a/461224 |
Contributor
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I believe this depends on 48bcbe6 |
zwoop
added
the
OnDocs
Contributor
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Cherry-picked to v9.0.x branch. |
zwoop
removed
the
OnDocs
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This will prevent potential future issues by following the rule of any class that needs virtual methods must have a virtual destructor.