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Dereferencing polymorphic pointers #2

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ztnel opened this issue May 19, 2021 · 0 comments

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ztnel commented May 19, 2021

Compile warning on Adafruit_SSD1306 lib implementation

/home/ubuntu/telemeter/include/Oled/Oled.cpp:34:12: warning: deleting object of polymorphic class type 'Adafruit_SSD1306' which has non-virtual destructor might cause undefined behavior [-Wdelete-non-virtual-dtor]
     delete display;
            ^~~~~~~

See here: https://wiki.sei.cmu.edu/confluence/display/cplusplus/OOP52-CPP.+Do+not+delete+a+polymorphic+object+without+a+virtual+destructor

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