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/* { dg-do compile } */
/* { dg-options "-Wall -Wshadow" } */
 
extern double strtod (const char *, char **);
#define UNUSED __attribute__ ((unused))
 
/* A built-in function may be overridden by an old-style definition
   specifying too few arguments... */
double cos ()
{  /* { dg-warning "shadows a built-in" } */
  /* { dg-warning "warning: number of arguments doesn't match built-in prototype" "built-in" { target *-*-* } 10 } */
  return strtod ("nan", 0);
}
 
/* the right number, but the wrong type, arguments... */
double sin (foo)
     int foo UNUSED;  /* { dg-warning "shadows a built-in" } */
{  /* { dg-warning "warning: argument 'foo' doesn't match built-in prototype" } */
  return strtod ("nan", 0);
}
 
/* or too many arguments.  */
long double cosl (foo, bar)
     const char *foo UNUSED;  /* { dg-warning "shadows a built-in" } */
     int bar UNUSED;
{  /* { dg-warning "warning: number of arguments doesn't match built-in prototype" } */
  /* { dg-warning "warning: argument 'foo' doesn't match built-in prototype" "foo" { target *-*-* } 26 } */
  return strtod ("nan", 0);
}