Zig and Rust article malloc and stack mismatch

[grumbach]

no programs understand what their stack usage is exactly
...
When we call malloc, we just hope that we have enough stack space for it, we almost never check.

Malloc is heap allocation not stack allocation. You probably meant memory space and not stack space.

[matklad]

No, this is correct. Like any function, Malloy needs some amount of stack space for its local variables. Moreover, the stack usage of malloc tends to be comparatively high due to things like

https://github.com/aerospike/jemalloc/blob/05108b5010a511226fb7586543f4162dd2d31d2b/include/jemalloc/internal/rb.h#L467

[grumbach]

Oh ok, I indeed didn't think of it that way 👍