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48 points ingve | 1 comments | 25 Jun 25 06:15 UTC | HN request time: 0.22s | source

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randomNumber7 ◴[26 Jun 25 18:44 UTC] No.44390120[source]▶

I never had the use case to allocate 0 bytes of memory.

If I would allocate 0 bytes of memory and get a pointer to it, I wouldn't care what the value of the pointer is since I am not allowed to dereference it anyways.

But then again, why would I allocate 0 bytes of memory?

replies(1): >>44392685 #

1. bobmcnamara ◴[27 Jun 25 00:10 UTC] No.44392685[source]▶

>>44390120 #

Sometimes it shakes out simpler for a generic container.

Ex: a vector using only a counter and pointer - you can use realloc() with fewer pointer validity checks.

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Some bits on malloc(0) in C being allowed to return NULL