// floating-point field by setting the field to the result of
// interpreting the string value in decimal. There is no check for
// overflow. Whitespace is trimmed and ignored.
//
// Unmarshal maps an XML element to a Name by recording the element
// name.
//
// Unmarshal maps an XML element to a pointer by setting the pointer
// to a freshly allocated value and then mapping the element to that value.
//

	// before calling netpollunblock, because publishInfo is what
	// stops netpollblock from blocking anew
	// (by changing the result of netpollcheckerr).
	// atomicInfo also holds the eventErr bit,
	// recording whether a poll event on the fd got an error;
	// atomicInfo is the only source of truth for that bit.
	atomicInfo atomic.Uint32 // atomic pollInfo

	// rg, wg are accessed atomically and hold g pointers.

		}
		entry := filepath.Join(subdir, name)
		info, err := os.Stat(entry)
		if err == nil && info.ModTime().Before(cutoff) {
			os.Remove(entry)
		}
	}
}

// putIndexEntry adds an entry to the cache recording that executing the action
// with the given id produces an output with the given output id (hash) and size.
func (c *DiskCache) putIndexEntry(id ActionID, out OutputID, size int64, allowVerify bool) error {

	// Ensure that typ is always sanity-checked.
	if check != nil {
		check.needsCleanup(typ)
	}
	return typ
}

// newNamedInstance creates a new named instance for the given origin and type
// arguments, recording pos as the position of its synthetic object (for error
// reporting).
//
// If set, expanding is the named type instance currently being expanded, that
// led to the creation of this instance.

		typ = (*Tuple)(nil)
	case constant_:
		typ = x.typ
		val = x.val
	default:
		typ = x.typ
	}
	assert(x.expr != nil && typ != nil)

	if isUntyped(typ) {
		// delay type and value recording until we know the type
		// or until the end of type checking
		check.rememberUntyped(x.expr, false, x.mode, typ.(*Basic), val)
	} else {
		check.recordTypeAndValue(x.expr, x.mode, typ, val)
	}
}

//
// The M will track this by storing a pointer to the lock; lock/unlock pairs for
// runtime-internal locks are always on the same M.
//
// Together, that demands several steps for recording contention. First, when
// finally acquiring a contended lock, the M decides whether it should plan to
// profile that event by storing a pointer to the lock in its "to be profiled

	// Ensure that typ is always sanity-checked.
	if check != nil {
		check.needsCleanup(typ)
	}
	return typ
}

// newNamedInstance creates a new named instance for the given origin and type
// arguments, recording pos as the position of its synthetic object (for error
// reporting).
//
// If set, expanding is the named type instance currently being expanded, that
// led to the creation of this instance.

// complete a stack trace whenever it is called, and simply copy that
// out in the traceback function, in a typical program the context
// function will be called many times without ever recording a
// traceback for that context. Recording a complete stack trace in a
// call to the context function is likely to be inefficient.
//
// The traceback function will be called with a single argument, a
// pointer to a struct:
//

	// want the binary for is to run the test, and the test result is cached,
	// then to avoid the link step, report the link as up-to-date.
	// We avoid the nested build ID problem in the previous special case
	// by recording the test results in the cache under the action ID half.
	if len(a.triggers) == 1 && a.triggers[0].TryCache != nil && a.triggers[0].TryCache(b, a.triggers[0]) {

var optimizedLibs = (!strings.Contains(gogcflags, "-N") && !strings.Contains(gogcflags, "-l"))

// TestNexting go-builds a file, then uses a debugger (default delve, optionally gdb)
// to next through the generated executable, recording each line landed at, and
// then compares those lines with reference file(s).
// Flag -u updates the reference file(s).
// Flag -g changes the debugger to gdb (and uses gdb-specific reference files)