How to use external sprintf instead of sprintf in libg with GNU Arm Embedded Toolchain Version 10.3-2021.10?

Acutally not only sprintf, there are some other functions have same issue. I implement sprintf, sscanf, etc in my source code, but get multiple definition error below while linking: [build] cmd...
How to use external sprintf instead of sprintf in libg with GNU Arm Embedded Toolchain Version 10.3-2021.10?

Acutally not only sprintf, there are some other functions have same issue. I implement sprintf, sscanf, etc in my source code, but get multiple definition error below while linking: [build] cmd...
sprintf(s,"floatvalue = %f",12.345) gives wrong value

TOOL: RVMDK V3.02a, with RealView V3.0 compiler. I use uC/OS-II in this program. Please mail to me for a complete example. huawdg@pub.wx.jsinfo.net Code in system_task.c: #include <LPC22xx...
sprintf(s,"floatvalue = %f",12.345) gives wrong value

TOOL: RVMDK V3.02a, with RealView V3.0 compiler. I use uC/OS-II in this program. Please mail to me for a complete example. huawdg@pub.wx.jsinfo.net Code in system_task.c: #include <LPC22xx...
How to realise Real-time detection of access of memory beyond the bounds of an allocation block, instead of period detection in Cortex-M4. Please give me any idea.

In my application, I have already redefine malloc and free with keil. Now I hope that the program will be stopped immediately at the exact location at which the program wrote beyond the allocated data...