CC1134 error in CCES C++ struct's pm & dm member

dear ADI admins,

i'm using adsp-21479 processor, it's fine to execute below code in C but i'm not able to execute when i change the postfix from .c into .cpp. there's cc1134 error message displayed in console and sadly i can't remove the pm/dm from the declaration, in order to use biquad function inside <filters.h> i need my structure member declare in pm section.

header.h

#progma once

#ifndef NSECTIONS
#define NSECTIONS (1)
#endif

#ifndef NSTATE
#define NSTATE (2*NSECTIONS)
#endif

typedef struct filter FILTER;
struct filter
{
    float state[NSTATE];
    float pm coeffs[5*NSECTIONS];
};

FILTER* init(void* address);

source.cpp

#include header.h
#include <filters.h>

FILTER* init(void* address)
{
    if (address == NULL) return NULL;
    FILTER* self = (FILTER*)address;

    self->coeffs[0] = 0.9849995433380051;
    self->coeffs[1] = -1.9699990866760102;
    self->coeffs[2] = 0.9849995433380051;

    self->coeffs[3] = -0.9702240460889019;
    self->coeffs[4] = 1.9697741272631186;

    for (int i = 0; i < NSTATE; i++)
    {
        self->state[i] = 0.0;
    }

    return self;
}

regards,

kweiwen