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An example to detect use-after-free: https://godbolt.org/z/zhiNLW

Basically this replicates what clang-tidy did

Too bad it doesn't detect the mismatch between new and free.

And if you fix it to use delete instead of free, you get "can't delete void *" errors. Perhaps not the best example code.

and if you fix the void->int, the warning goes away.

yeah that's why I changed int* to void* in the example, but I forgot to change new to malloc