[EXT] Re: OpenSSL 3.2.0: dane_tlsa_add(): tlsa_free() problem?

[Blumenthal, Uri - 0553 - MITLL]

>> Fix freshly introduced double-free.
>>
>>
>> - tlsa_free(t);
>
> BTW: maybe a more "defensive" programming style should be used:
> reset the pointer after it has been freed:
>
> tlsa_free(t); t = NULL;

I fully support this idea, and am surprised that the OpenSSL maintainers have been resisting similar suggestions for quite some time.

> Or something like:
>
> #define XYZ_FREE(ptr) do { \
>  if ((ptr) != NULL) { \
>   xyz_free(ptr); \
>   (ptr) = NULL; \
>  } \
> } while (0)


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