Tool/software:
Hi Expert
Customer need to redefine fputc function but the compiler reports the redefine issue below:

I searched the e2e thread, there is one post mentioned that putchar should not be called to avoid the compiler to compiler the fputc function in drivelib:https://software-dl.ti.com/msp430/esd/MSPM0-SDK/latest/docs/english/quickstart_guides/doc_guide/doc_guide-srcs/quickstart_guide_keil.html
I confirmed with customer that he never call the putchar function in his program, but when search the project, can find putchar is defined in map file:

could you please kindly look into this issue? Why fputc cannot be redefined by user ?
thanks
Joe