Should malloc-related functions be weak?

[Pedro Alves]

On 08/01/2016 11:39 AM, Florian Weimer wrote:
> On 08/01/2016 12:25 PM, Pedro Alves wrote:

>> Are these other symbols meant be overridden?
> 
> These symbols (__malloc_fork_lock_parent etc.) are not supposed to be
> overridden, they are entirely internal to glibc and its malloc
> implementation.  If the glibc malloc is interposed, these functions
> should not do anything.

Hmm, doesn't an interposing malloc need to worry about the same 
scenarios these hooks were invented for?

Say I copy glibc malloc to my project, and tweak it somehow for my
workloads.  How can I make my copy work just as correctly as the
builtin one?

Thanks,
Pedro Alves