system halt/reset when I call the printf("3.1f%", vfloat) function.

I use 28335 with External ASRAM.

I want to use standard library with float option.

but when I call the function, the code is restarted.

In CMD,

  .ebss    : >> ZONE7B  PAGE = 1

  .esysmem : >> ZONE7B PAGE = 1

(I use the ASRAM for the all variable and RAM area)

In Compiler setting,

"Level of printf/scanf support required (--printf_support)" at Library Function Assumptions is FULL.

Can I fix this error?

Thanks in advance.