add example that proves extern "C" malloc and free

[xoviat]

trafficstars

[romainreignier]

I am wondering if a no_std project using bindings on a C code can provide libc malloc and free to the C code using a Rust global allocator like embbeded-alloc?

[kaganege]

I am wondering if a no_std project using bindings on a C code can provide libc malloc and free to the C code using a Rust global allocator like embbeded-alloc?

@romainreignier here it is: allocator.rs

[zeenix]

This is old and I don't even know what it's really about.