// The imports in p.TestImports and p.XTestImports are not recursively
// loaded during the initial load of p, so they list the imports found in
// the source file, but most processing should be over the vendor-resolved
// import paths. We do this resolution lazily both to avoid file system work
// and because the eventual real load of the test imports (during 'go test')

//		linux/ppc64le and linux/arm64 (only for 48-bit VMA).
//	-msan
//		enable interoperation with memory sanitizer.
//		Supported only on linux/amd64, linux/arm64, linux/loong64, freebsd/amd64
//		and only with Clang/LLVM as the host C compiler.
//		PIE build mode will be used on all platforms except linux/amd64.
//	-asan
//		enable interoperation with address sanitizer.
//		Supported only on linux/arm64, linux/amd64, linux/loong64.

	"cmd/internal/buildid"
	"cmd/internal/quoted"
	"cmd/internal/sys"
)

const DefaultCFlags = "-O2 -g"

// actionList returns the list of actions in the dag rooted at root
// as visited in a depth-first post-order traversal.
func actionList(root *Action) []*Action {
	seen := map[*Action]bool{}
	all := []*Action{}
	var walk func(*Action)
	walk = func(a *Action) {
		if seen[a] {
			return
		}
		seen[a] = true