gcc/testsuite/c-c++-common/musttail18.c

/* { dg-do compile { target musttail } } */
/* { dg-additional-options "-fdelayed-branch" { target sparc*-*-* } } */

void __attribute__((noipa)) f() {}

void f2()
{
  __attribute__((__musttail__)) return f2();
}

void f3()
{
  __attribute__((__musttail__)) return f();
}