You copied the Doc URL to your clipboard.

Identification of integer division-by-zero errors in C code

On entry into __aeabi_idiv0(), the link register LR contains the address of the instruction after the call to the __aeabi_uidiv() division routine in your application code. The offending line in the source code can be identified by looking up the line of C code in the debugger at the address given by LR.