// Arenas are useful for improving efficiency as they may be freed back to
// the runtime manually, though any memory obtained from freed arenas must
// not be accessed once that happens. An Arena is automatically freed once
// it is no longer referenced, so it must be kept alive (see runtime.KeepAlive)
// until any memory allocated from it is no longer needed.
//

pkg syscall (netbsd-386), const MAP_INHERIT_DONATE_COPY = 3
pkg syscall (netbsd-386), const MAP_INHERIT_DONATE_COPY ideal-int
pkg syscall (netbsd-386), const MAP_INHERIT_NONE = 2
pkg syscall (netbsd-386), const MAP_INHERIT_NONE ideal-int
pkg syscall (netbsd-386), const MAP_INHERIT_SHARE = 0
pkg syscall (netbsd-386), const MAP_INHERIT_SHARE ideal-int
pkg syscall (netbsd-386), const MAP_NORESERVE = 64

		t.Skipf("could not parse 'go env CXX' output %q: %s", string(cxx), err)
	}
	if len(args) == 0 {
		t.Skip("no C++ compiler")
	}
	testenv.MustHaveExecPath(t, string(args[0]))
}

var (
	swigOnce sync.Once
	haveSwig bool
)

func mustHaveSwig(t *testing.T) {
	swigOnce.Do(func() {
		mustHaveSwigOnce(t)
		haveSwig = true
	})
	// The first call will skip t with a nice message. On later calls, we just skip.

// a list of exported functions, and the actual AST, to be rewritten and
// printed.
func (f *File) ParseGo(abspath string, src []byte) {
	// Two different parses: once with comments, once without.
	// The printer is not good enough at printing comments in the
	// right place when we start editing the AST behind its back,
	// so we use ast1 to look for the doc comments on import "C"

memory pinned using [runtime.Pinner]. This type may be used to manage
the duration of the memory's pinned status, potentially beyond the
duration of a C function call. Memory may be pinned more than once and
must be unpinned exactly the same number of times it has been pinned.

Go code may pass a Go pointer to C provided the memory to which it
points does not contain any Go pointers to memory that is unpinned. When

</p>

<p>
The range expression <code>x</code> is evaluated once before beginning the loop,
with one exception: if at most one iteration variable is present and
<code>len(x)</code> is <a href="#Length_and_capacity">constant</a>,
the range expression is not evaluated.
</p>

<p>
Function calls on the left are evaluated once per iteration.
For each iteration, iteration values are produced as follows

pkg debug/elf, const R_PPC64_GOT_TPREL16_LO_DS R_PPC64
pkg debug/elf, const R_PPC64_JMP_SLOT = 21
pkg debug/elf, const R_PPC64_JMP_SLOT R_PPC64
pkg debug/elf, const R_PPC64_NONE = 0
pkg debug/elf, const R_PPC64_NONE R_PPC64
pkg debug/elf, const R_PPC64_REL14 = 11
pkg debug/elf, const R_PPC64_REL14 R_PPC64
pkg debug/elf, const R_PPC64_REL14_BRNTAKEN = 13
pkg debug/elf, const R_PPC64_REL14_BRNTAKEN R_PPC64

pkg syscall (netbsd-arm64-cgo), const IPPROTO_MOBILE = 55
pkg syscall (netbsd-arm64-cgo), const IPPROTO_MOBILE ideal-int
pkg syscall (netbsd-arm64-cgo), const IPPROTO_NONE = 59
pkg syscall (netbsd-arm64-cgo), const IPPROTO_NONE ideal-int
pkg syscall (netbsd-arm64-cgo), const IPPROTO_PFSYNC = 240
pkg syscall (netbsd-arm64-cgo), const IPPROTO_PFSYNC ideal-int
pkg syscall (netbsd-arm64-cgo), const IPPROTO_PIM = 103

			return
		}
	}
}

func testFileMode(t *testing.T, f *File, want fs.FileMode) {
	mode := f.Mode()
	if want == 0 {
		t.Errorf("%s mode: got %v, want none", f.Name, mode)
	} else if mode != want {
		t.Errorf("%s mode: want %v, got %v", f.Name, want, mode)
	}
}

func TestInvalidFiles(t *testing.T) {
	const size = 1024 * 70 // 70kb
	b := make([]byte, size)

	if err != nil {
		t.Fatalf("mmap failed %s", err)
	}
	err = syscall.Mprotect(b[:pagesize], syscall.PROT_NONE)
	if err != nil {
		t.Fatalf("mprotect low failed %s\n", err)
	}
	err = syscall.Mprotect(b[2*pagesize:], syscall.PROT_NONE)
	if err != nil {
		t.Fatalf("mprotect high failed %s\n", err)
	}
	return b[pagesize : 2*pagesize]
}

func TestEqualNearPageBoundary(t *testing.T) {