tests and example functions. See 'go help testfunc' for more.
Each listed package causes the execution of a separate test binary.
Files whose names begin with "_" (including "_test.go") or "." are ignored.

Test files that declare a package with the suffix "_test" will be compiled as a
separate package, and then linked and run with the main test binary.

The go tool will ignore a directory named "testdata", making it available

// acquire the heap lock via allocSpan. See mheap for details.
//
// If new code is written to call allocManual, do NOT use an
// existing spanAllocType value and instead declare a new one.
//
//go:systemstack
func (h *mheap) allocManual(npages uintptr, typ spanAllocType) *mspan {
	if !typ.manual() {
		throw("manual span allocation called with non-manually-managed type")
	}

	LoadTests bool

	// UseVendorAll causes the "all" package pattern to be interpreted as if
	// running "go mod vendor" (or building with "-mod=vendor").
	//
	// This is a no-op for modules that declare 'go 1.16' or higher, for which this
	// is the default (and only) interpretation of the "all" pattern in module mode.
	UseVendorAll bool

	// AllowErrors indicates that LoadPackages should not terminate the process if

func (l *Loader) growOuter(reqLen int) {
	curLen := len(l.outer)
	if reqLen > curLen {
		l.outer = append(l.outer, make([]Sym, reqLen-curLen)...)
	}
}

// SetCarrierSym declares that 'c' is the carrier or container symbol
// for 's'. Carrier symbols are used in the linker to as a container
// for a collection of sub-symbols where the content of the