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13.30.6 malloc_usable_size

Documentation:
man malloc_usable_size

Gnulib module: —

Portability problems fixed by Gnulib:

Portability problems not fixed by Gnulib:

• This function is missing on some platforms: macOS 14, FreeBSD 6.0, NetBSD 10.0, OpenBSD 6.7, Minix 3.1.8, AIX 5.1, HP-UX 11.00, Solaris 11.4, mingw, MSVC 14, Android 4.1.