Man pages matching name __malloc_hook in section 3:

__malloc_hook.3.en	debian 10 / manpages-dev
__malloc_hook.3.es	debian 10 / manpages-es
__malloc_hook.3.ja	debian 10 / manpages-ja-dev
__malloc_hook.3.en	debian 11 / manpages-dev
__malloc_hook.3.es	debian 11 / manpages-es-dev
__malloc_hook.3.fr	debian 11 / manpages-fr-dev
__malloc_hook.3.ja	debian 11 / manpages-ja-dev
__malloc_hook.3.en	debian 12 / manpages-dev
__malloc_hook.3.fr	debian 12 / manpages-fr-dev
__malloc_hook.3.ja	debian 12 / manpages-ja-dev