/* { dg-do compile } */
/* { dg-additional-options "-std=gnu17" } */

struct singlecomplex { float real, imag ; } ;
struct doublecomplex { double real, imag ; } ;
struct extendedcomplex { long double real, imag ; } ;
extern double cabs();
float cabsf(fc)
     struct singlecomplex fc;  /* { dg-warning "doesn't match" } */
{
  struct doublecomplex dc ;
  dc.real=fc.real; dc.imag=fc.imag;
  return (float) cabs(dc);   /* { dg-warning "incompatible type for argument 1 of .cabs." } */
}