> why do you provide implementations for calloc and strdup instead of letting them be set as well. For me personally it's because I never use calloc religiousl

> why do you provide implementations for calloc and strdup instead of letting them be set as well. For me personally it's because I never use calloc religiously. I implement calloc so that I can forward those allocators to my dependencies (like curl). I guess you have a point there. With regards to strdup: My version changes the interface in that it's allowed to pass NULL through it in my own code. I know I did not do that in the blog post because I did not want to start a discussion about that API change :-)