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MSPM0C1106: fputc redefine warning

Part Number: MSPM0C1106


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