original from newlib git libc/stdlib/nano-mallocr.c
original from newlib git libc/stdlib/nano-mallocr.c

352cdbb0125fafdf61977bfa299a7214ac885838

micro-os-plus/cmsis-plus,micro-os-plus/cmsis-plus,micro-os-plus/cmsis-plus,micro-os-plus/cmsis-plus