Cannot execute unit test using rx-elf-run

Hello,

I follow the unit test guide in link: https://www.renesas.com/us/en/document/apn/how-use-cunit-e-studio-gcc-rx

In execute step 16, I receive an error: "Read from unwritten memory at 0xfffffff0"

If I use rl78-elf-run, output is a string of symbols

My source code is all following the guide above.

Please help me on this error.