// create a .partial file before extracting the directory, and delete
	// the .partial file afterward (all while holding the lock).
	//
	// Before Go 1.16, we extracted to a temporary directory with a random name
	// then renamed it into place with os.Rename. On Windows, this failed with
	// ERROR_ACCESS_DENIED when another process (usually an anti-virus scanner)
	// opened files in the temporary directory.
	//

	const (
		notType = 1 << iota
		notIntConst
		notNumConst
		notStrLiteral
		notDeclared
	)
	sawUnmatchedErrors := false
	for _, line := range strings.Split(stderr, "\n") {
		// Ignore warnings and random comments, with one
		// exception: newer GCC versions will sometimes emit
		// an error on a macro #define with a note referring
		// to where the expansion occurs. We care about where

or assignment are not yet evaluated.
</li>

<li>
If one or more of the communications can proceed,
a single one that can proceed is chosen via a uniform pseudo-random selection.
Otherwise, if there is a default case, that case is chosen.
If there is no default case, the "select" statement blocks until
at least one of the communications can proceed.
</li>

<li>

			w.waiting++
			if w.waiting == w.running {
				// All done.
				w.wait.Broadcast()
				w.mu.Unlock()
				return
			}
			w.wait.Wait()
			w.waiting--
		}

		// Pick something to do at random,
		// to eliminate pathological contention
		// in case items added at about the same time
		// are most likely to contend.
		i := rand.Intn(len(w.todo))
		item := w.todo[i]
		w.todo[i] = w.todo[len(w.todo)-1]

	}
	exe := tmpbase

	runGoArgs := []string{"build", "-o", exe, "-gcflags=all=" + gcflags}
	runGoArgs = append(runGoArgs, moreArgs...)
	runGoArgs = append(runGoArgs, filepath.Join("testdata", base+".go"))

	runGo(t, "", runGoArgs...)

	nextlog := testbase + ".nexts"
	tmplog := tmpbase + ".nexts"
	var dbg dbgr
	if *useGdb {
		dbg = newGdb(t, tag, exe)
	} else {
		dbg = newDelve(t, tag, exe)
	}

preserving the behavior of earlier versions of Go.
A future version of Go may change the defaults to
`tarinsecurepath=0` and `zipinsecurepath=0`.

Go 1.20 introduced automatic seeding of the
[`math/rand`](/pkg/math/rand) global random number generator,
controlled by the [`randautoseed` setting](/pkg/math/rand/#Seed).

Go 1.20 introduced the concept of fallback roots for use during certificate verification,

			} else {
				to = filepath.Join("/_", toPath)
			}
			flags = append(slices.Clip(flags), prefixMapFlag+"="+from+"="+to)
		}
	}

	// Tell gcc to not insert truly random numbers into the build process
	// this ensures LTO won't create random numbers for symbols.
	if b.gccSupportsFlag(compiler, "-frandom-seed=1") {
		flags = append(flags, "-frandom-seed="+buildid.HashToString(a.actionID))
	}

	overlayPath := file

or assignment are not yet evaluated.
</li>

<li>
If one or more of the communications can proceed,
a single one that can proceed is chosen via a uniform pseudo-random selection.
Otherwise, if there is a default case, that case is chosen.
If there is no default case, the "select" statement blocks until
at least one of the communications can proceed.
</li>

<li>