/* Test whether a lexical closure created by GCC requires an executable stack.
   Compile this file with
     cross <target> gcc -O2 -S -fomit-frame-pointer gcc-closure.c
 */

extern int callback (void (*) (void));

int foo (void)
{
  int x = 0;

  void increment_x (void) { x++; }

  callback (increment_x);

  return x;
}

/* Result:
   i386       yes
   x86_64     yes
   m68k       yes
   mips       yes
   mips64     yes
   sparc      yes
   sparc64    yes
   alpha      yes
   hppa       ?
   hppa64     ?
   arm        yes
   arm64      yes
   powerpc    no
   powerpc64  no
   powerpc64-elfv2 no
   ia64       no
   s390       yes
   s390x      yes
   riscv32    yes
   riscv64    yes
 */