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/* { dg-do compile } */

/* { dg-options "-Wall -Wshadow -fshow-column" } */

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|number of arguments" } */

{

  return strtod ("nan", 0);

}

/* the right number, but the wrong type, arguments... */

double sin (foo)  /* { dg-warning "8:shadows a built-in" } */

     int foo UNUSED; /* { dg-warning "10:argument 'foo' doesn't match built-in prototype" } */

{

  return strtod ("nan", 0);

}

/* or too many arguments.  */

long double cosl (foo, bar)  /* { dg-warning "shadows a built-in|number of arguments" } */

     const char *foo UNUSED; /* { dg-warning "18:argument 'foo' doesn't match" } */

     int bar UNUSED;

{

  return strtod ("nan", 0);

}