rust/compiler_test.go - SHIFTPHONES/android_build_soong - Gitiles

 // Copyright 2019 The Android Open Source Project
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
 //     http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.

 package rust

 import (
 	"strings"
 	"testing"

 	"android/soong/android"
 )

 // Test that feature flags are being correctly generated.
 func TestFeaturesToFlags(t *testing.T) {
 	ctx := testRust(t, `
 		rust_library_host_dylib {
 			name: "libfoo",
 			srcs: ["foo.rs"],
 			crate_name: "foo",
 			features: [
 				"fizz",
 				"buzz"
 			],
 		}`)

 	libfooDylib := ctx.ModuleForTests("libfoo", "linux_glibc_x86_64_dylib").Rule("rustc")

 	if !strings.Contains(libfooDylib.Args["rustcFlags"], "cfg 'feature=\"fizz\"'") ||
 		!strings.Contains(libfooDylib.Args["rustcFlags"], "cfg 'feature=\"buzz\"'") {
 		t.Fatalf("missing fizz and buzz feature flags for libfoo dylib, rustcFlags: %#v", libfooDylib.Args["rustcFlags"])
 	}
 }

 // Test that cfgs flags are being correctly generated.
 func TestCfgsToFlags(t *testing.T) {
 	ctx := testRust(t, `
 		rust_library_host {
 			name: "libfoo",
 			srcs: ["foo.rs"],
 			crate_name: "foo",
 			cfgs: [
 				"std",
 				"cfg1=\"one\""
 			],
 		}`)

 	libfooDylib := ctx.ModuleForTests("libfoo", "linux_glibc_x86_64_dylib").Rule("rustc")

 	if !strings.Contains(libfooDylib.Args["rustcFlags"], "cfg 'std'") ||
 		!strings.Contains(libfooDylib.Args["rustcFlags"], "cfg 'cfg1=\"one\"'") {
 		t.Fatalf("missing std and cfg1 flags for libfoo dylib, rustcFlags: %#v", libfooDylib.Args["rustcFlags"])
 	}
 }

 func TestLtoFlag(t *testing.T) {
 	ctx := testRust(t, `
 		rust_library_host {
 			name: "libfoo",
 			srcs: ["foo.rs"],
 			crate_name: "foo",
 			lto: {
 				thin: false,
 			}
 		}

 		rust_library_host {
 			name: "libfoo_lto",
 			srcs: ["foo.rs"],
 			crate_name: "foo",
 		}
 		`)

 	libfoo := ctx.ModuleForTests("libfoo", "linux_glibc_x86_64_dylib").Rule("rustc")
 	libfooLto := ctx.ModuleForTests("libfoo_lto", "linux_glibc_x86_64_dylib").Rule("rustc")

 	if strings.Contains(libfoo.Args["rustcFlags"], "-C lto=thin") {
 		t.Fatalf("libfoo expected to disable lto -- rustcFlags: %#v", libfoo.Args["rustcFlags"])
 	}
 	if !strings.Contains(libfooLto.Args["rustcFlags"], "-C lto=thin") {
 		t.Fatalf("libfoo expected to enable lto by default -- rustcFlags: %#v", libfooLto.Args["rustcFlags"])
 	}
 }

 // Test that we reject multiple source files.
 func TestEnforceSingleSourceFile(t *testing.T) {

 	singleSrcError := "srcs can only contain one path for a rust file and source providers prefixed by \":\""
 	prebuiltSingleSrcError := "prebuilt libraries can only have one entry in srcs"

 	// Test libraries
 	testRustError(t, singleSrcError, `
 		rust_library_host {
 			name: "foo-bar-library",
 			srcs: ["foo.rs", "src/bar.rs"],
 		}`)

 	// Test binaries
 	testRustError(t, singleSrcError, `
 			rust_binary_host {
 				name: "foo-bar-binary",
 				srcs: ["foo.rs", "src/bar.rs"],
 			}`)

 	// Test proc_macros
 	testRustError(t, singleSrcError, `
 		rust_proc_macro {
 			name: "foo-bar-proc-macro",
 			srcs: ["foo.rs", "src/bar.rs"],
 		}`)

 	// Test prebuilts
 	testRustError(t, prebuiltSingleSrcError, `
 		rust_prebuilt_dylib {
 			name: "foo-bar-prebuilt",
 			srcs: ["liby.so", "libz.so"],
 		  host_supported: true,
 		}`)
 }

 // Test that we reject _no_ source files.
 func TestEnforceMissingSourceFiles(t *testing.T) {

 	singleSrcError := "srcs must not be empty"

 	// Test libraries
 	testRustError(t, singleSrcError, `
 		rust_library_host {
 			name: "foo-bar-library",
 			crate_name: "foo",
 		}`)

 	// Test binaries
 	testRustError(t, singleSrcError, `
 		rust_binary_host {
 			name: "foo-bar-binary",
 			crate_name: "foo",
 		}`)

 	// Test proc_macros
 	testRustError(t, singleSrcError, `
 		rust_proc_macro {
 			name: "foo-bar-proc-macro",
 			crate_name: "foo",
 		}`)

 	// Test prebuilts
 	testRustError(t, singleSrcError, `
 		rust_prebuilt_dylib {
 			name: "foo-bar-prebuilt",
 			crate_name: "foo",
 		  host_supported: true,
 		}`)
 }

 // Test environment vars for Cargo compat are set.
 func TestCargoCompat(t *testing.T) {
 	ctx := testRust(t, `
 		rust_binary {
 			name: "fizz",
 			srcs: ["foo.rs"],
 			crate_name: "foo",
 			cargo_env_compat: true,
 			cargo_pkg_version: "1.0.0"
 		}`)

 	fizz := ctx.ModuleForTests("fizz", "android_arm64_armv8-a").Rule("rustc")

 	if !strings.Contains(fizz.Args["envVars"], "CARGO_BIN_NAME=fizz") {
 		t.Fatalf("expected 'CARGO_BIN_NAME=fizz' in envVars, actual envVars: %#v", fizz.Args["envVars"])
 	}
 	if !strings.Contains(fizz.Args["envVars"], "CARGO_CRATE_NAME=foo") {
 		t.Fatalf("expected 'CARGO_CRATE_NAME=foo' in envVars, actual envVars: %#v", fizz.Args["envVars"])
 	}
 	if !strings.Contains(fizz.Args["envVars"], "CARGO_PKG_VERSION=1.0.0") {
 		t.Fatalf("expected 'CARGO_PKG_VERSION=1.0.0' in envVars, actual envVars: %#v", fizz.Args["envVars"])
 	}
 }

 func TestInstallDir(t *testing.T) {
 	ctx := testRust(t, `
 		rust_library_dylib {
 			name: "libfoo",
 			srcs: ["foo.rs"],
 			crate_name: "foo",
 		}
 		rust_binary {
 			name: "fizzbuzz",
 			srcs: ["foo.rs"],
 		}`)

 	install_path_lib64 := ctx.ModuleForTests("libfoo",
 		"android_arm64_armv8-a_dylib").Module().(*Module).compiler.(*libraryDecorator).path.String()
 	install_path_lib32 := ctx.ModuleForTests("libfoo",
 		"android_arm_armv7-a-neon_dylib").Module().(*Module).compiler.(*libraryDecorator).path.String()
 	install_path_bin := ctx.ModuleForTests("fizzbuzz",
 		"android_arm64_armv8-a").Module().(*Module).compiler.(*binaryDecorator).path.String()

 	if !strings.HasSuffix(install_path_lib64, "system/lib64/libfoo.dylib.so") {
 		t.Fatalf("unexpected install path for 64-bit library: %#v", install_path_lib64)
 	}
 	if !strings.HasSuffix(install_path_lib32, "system/lib/libfoo.dylib.so") {
 		t.Fatalf("unexpected install path for 32-bit library: %#v", install_path_lib32)
 	}
 	if !strings.HasSuffix(install_path_bin, "system/bin/fizzbuzz") {
 		t.Fatalf("unexpected install path for binary: %#v", install_path_bin)
 	}
 }

 func TestLints(t *testing.T) {

 	bp := `
 		// foo uses the default value of lints
 		rust_library {
 			name: "libfoo",
 			srcs: ["foo.rs"],
 			crate_name: "foo",
 		}
 		// bar forces the use of the "android" lint set
 		rust_library {
 			name: "libbar",
 			srcs: ["foo.rs"],
 			crate_name: "bar",
 			lints: "android",
 		}
 		// foobar explicitly disable all lints
 		rust_library {
 			name: "libfoobar",
 			srcs: ["foo.rs"],
 			crate_name: "foobar",
 			lints: "none",
 		}`

 	var lintTests = []struct {
 		modulePath string
 		fooFlags   string
 	}{
 		{"", "${config.RustDefaultLints}"},
 		{"external/", "${config.RustAllowAllLints}"},
 		{"hardware/", "${config.RustVendorLints}"},
 	}

 	for _, tc := range lintTests {
 		t.Run("path="+tc.modulePath, func(t *testing.T) {

 			result := android.GroupFixturePreparers(
 				prepareForRustTest,
 				// Test with the blueprint file in different directories.
 				android.FixtureAddTextFile(tc.modulePath+"Android.bp", bp),
 			).RunTest(t)

 			r := result.ModuleForTests("libfoo", "android_arm64_armv8-a_dylib").MaybeRule("rustc")
 			android.AssertStringDoesContain(t, "libfoo flags", r.Args["rustcFlags"], tc.fooFlags)

 			r = result.ModuleForTests("libbar", "android_arm64_armv8-a_dylib").MaybeRule("rustc")
 			android.AssertStringDoesContain(t, "libbar flags", r.Args["rustcFlags"], "${config.RustDefaultLints}")

 			r = result.ModuleForTests("libfoobar", "android_arm64_armv8-a_dylib").MaybeRule("rustc")
 			android.AssertStringDoesContain(t, "libfoobar flags", r.Args["rustcFlags"], "${config.RustAllowAllLints}")
 		})
 	}
 }

 // Test that devices are linking the stdlib dynamically
 func TestStdDeviceLinkage(t *testing.T) {
 	ctx := testRust(t, `
 		rust_binary {
 			name: "fizz",
 			srcs: ["foo.rs"],
 		}
 		rust_library {
 			name: "libfoo",
 			srcs: ["foo.rs"],
 			crate_name: "foo",
 		}`)
 	fizz := ctx.ModuleForTests("fizz", "android_arm64_armv8-a").Module().(*Module)
 	fooRlib := ctx.ModuleForTests("libfoo", "android_arm64_armv8-a_rlib_dylib-std").Module().(*Module)
 	fooDylib := ctx.ModuleForTests("libfoo", "android_arm64_armv8-a_dylib").Module().(*Module)

 	if !android.InList("libstd", fizz.Properties.AndroidMkDylibs) {
 		t.Errorf("libstd is not linked dynamically for device binaries")
 	}
 	if !android.InList("libstd", fooRlib.Properties.AndroidMkDylibs) {
 		t.Errorf("libstd is not linked dynamically for rlibs")
 	}
 	if !android.InList("libstd", fooDylib.Properties.AndroidMkDylibs) {
 		t.Errorf("libstd is not linked dynamically for dylibs")
 	}
 }

 // Ensure that manual link flags are disallowed.
 func TestManualLinkageRejection(t *testing.T) {
 	// rustc flags
 	testRustError(t, ".* cannot be manually specified", `
 		rust_binary {
 			name: "foo",
 			srcs: [
 				"foo.rs",
 			],
 			flags: ["-lbar"],
 		}
 	`)
 	testRustError(t, ".* cannot be manually specified", `
 		rust_binary {
 			name: "foo",
 			srcs: [
 				"foo.rs",
 			],
 			flags: ["--extern=foo"],
 		}
 	`)
 	testRustError(t, ".* cannot be manually specified", `
 		rust_binary {
 			name: "foo",
 			srcs: [
 				"foo.rs",
 			],
 			flags: ["-Clink-args=foo"],
 		}
 	`)
 	testRustError(t, ".* cannot be manually specified", `
 		rust_binary {
 			name: "foo",
 			srcs: [
 				"foo.rs",
 			],
 			flags: ["-C link-args=foo"],
 		}
 	`)
 	testRustError(t, ".* cannot be manually specified", `
 		rust_binary {
 			name: "foo",
 			srcs: [
 				"foo.rs",
 			],
 			flags: ["-L foo/"],
 		}
 	`)

 	// lld flags
 	testRustError(t, ".* cannot be manually specified", `
 		rust_binary {
 			name: "foo",
 			srcs: [
 				"foo.rs",
 			],
 			ld_flags: ["-Wl,-L bar/"],
 		}
 	`)
 	testRustError(t, ".* cannot be manually specified", `
 		rust_binary {
 			name: "foo",
 			srcs: [
 				"foo.rs",
 			],
 			ld_flags: ["-Wl,-lbar"],
 		}
 	`)
 }
	// Copyright 2019 The Android Open Source Project
	//
	// Licensed under the Apache License, Version 2.0 (the "License");
	// you may not use this file except in compliance with the License.
	// You may obtain a copy of the License at
	//
	// http://www.apache.org/licenses/LICENSE-2.0
	//
	// Unless required by applicable law or agreed to in writing, software
	// distributed under the License is distributed on an "AS IS" BASIS,
	// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	// See the License for the specific language governing permissions and
	// limitations under the License.

	package rust

	import (
	"strings"
	"testing"

	"android/soong/android"
	)

	// Test that feature flags are being correctly generated.
	func TestFeaturesToFlags(t *testing.T) {
	ctx := testRust(t, `
	rust_library_host_dylib {
	name: "libfoo",
	srcs: ["foo.rs"],
	crate_name: "foo",
	features: [
	"fizz",
	"buzz"
	],
	}`)

	libfooDylib := ctx.ModuleForTests("libfoo", "linux_glibc_x86_64_dylib").Rule("rustc")

	if !strings.Contains(libfooDylib.Args["rustcFlags"], "cfg 'feature=\"fizz\"'") \|\|
	!strings.Contains(libfooDylib.Args["rustcFlags"], "cfg 'feature=\"buzz\"'") {
	t.Fatalf("missing fizz and buzz feature flags for libfoo dylib, rustcFlags: %#v", libfooDylib.Args["rustcFlags"])
	}
	}

	// Test that cfgs flags are being correctly generated.
	func TestCfgsToFlags(t *testing.T) {
	ctx := testRust(t, `
	rust_library_host {
	name: "libfoo",
	srcs: ["foo.rs"],
	crate_name: "foo",
	cfgs: [
	"std",
	"cfg1=\"one\""
	],
	}`)

	libfooDylib := ctx.ModuleForTests("libfoo", "linux_glibc_x86_64_dylib").Rule("rustc")

	if !strings.Contains(libfooDylib.Args["rustcFlags"], "cfg 'std'") \|\|
	!strings.Contains(libfooDylib.Args["rustcFlags"], "cfg 'cfg1=\"one\"'") {
	t.Fatalf("missing std and cfg1 flags for libfoo dylib, rustcFlags: %#v", libfooDylib.Args["rustcFlags"])
	}
	}

	func TestLtoFlag(t *testing.T) {
	ctx := testRust(t, `
	rust_library_host {
	name: "libfoo",
	srcs: ["foo.rs"],
	crate_name: "foo",
	lto: {
	thin: false,
	}
	}

	rust_library_host {
	name: "libfoo_lto",
	srcs: ["foo.rs"],
	crate_name: "foo",
	}
	`)

	libfoo := ctx.ModuleForTests("libfoo", "linux_glibc_x86_64_dylib").Rule("rustc")
	libfooLto := ctx.ModuleForTests("libfoo_lto", "linux_glibc_x86_64_dylib").Rule("rustc")

	if strings.Contains(libfoo.Args["rustcFlags"], "-C lto=thin") {
	t.Fatalf("libfoo expected to disable lto -- rustcFlags: %#v", libfoo.Args["rustcFlags"])
	}
	if !strings.Contains(libfooLto.Args["rustcFlags"], "-C lto=thin") {
	t.Fatalf("libfoo expected to enable lto by default -- rustcFlags: %#v", libfooLto.Args["rustcFlags"])
	}
	}

	// Test that we reject multiple source files.
	func TestEnforceSingleSourceFile(t *testing.T) {

	singleSrcError := "srcs can only contain one path for a rust file and source providers prefixed by \":\""
	prebuiltSingleSrcError := "prebuilt libraries can only have one entry in srcs"

	// Test libraries
	testRustError(t, singleSrcError, `
	rust_library_host {
	name: "foo-bar-library",
	srcs: ["foo.rs", "src/bar.rs"],
	}`)

	// Test binaries
	testRustError(t, singleSrcError, `
	rust_binary_host {
	name: "foo-bar-binary",
	srcs: ["foo.rs", "src/bar.rs"],
	}`)

	// Test proc_macros
	testRustError(t, singleSrcError, `
	rust_proc_macro {
	name: "foo-bar-proc-macro",
	srcs: ["foo.rs", "src/bar.rs"],
	}`)

	// Test prebuilts
	testRustError(t, prebuiltSingleSrcError, `
	rust_prebuilt_dylib {
	name: "foo-bar-prebuilt",
	srcs: ["liby.so", "libz.so"],
	host_supported: true,
	}`)
	}

	// Test that we reject _no_ source files.
	func TestEnforceMissingSourceFiles(t *testing.T) {

	singleSrcError := "srcs must not be empty"

	// Test libraries
	testRustError(t, singleSrcError, `
	rust_library_host {
	name: "foo-bar-library",
	crate_name: "foo",
	}`)

	// Test binaries
	testRustError(t, singleSrcError, `
	rust_binary_host {
	name: "foo-bar-binary",
	crate_name: "foo",
	}`)

	// Test proc_macros
	testRustError(t, singleSrcError, `
	rust_proc_macro {
	name: "foo-bar-proc-macro",
	crate_name: "foo",
	}`)

	// Test prebuilts
	testRustError(t, singleSrcError, `
	rust_prebuilt_dylib {
	name: "foo-bar-prebuilt",
	crate_name: "foo",
	host_supported: true,
	}`)
	}

	// Test environment vars for Cargo compat are set.
	func TestCargoCompat(t *testing.T) {
	ctx := testRust(t, `
	rust_binary {
	name: "fizz",
	srcs: ["foo.rs"],
	crate_name: "foo",
	cargo_env_compat: true,
	cargo_pkg_version: "1.0.0"
	}`)

	fizz := ctx.ModuleForTests("fizz", "android_arm64_armv8-a").Rule("rustc")

	if !strings.Contains(fizz.Args["envVars"], "CARGO_BIN_NAME=fizz") {
	t.Fatalf("expected 'CARGO_BIN_NAME=fizz' in envVars, actual envVars: %#v", fizz.Args["envVars"])
	}
	if !strings.Contains(fizz.Args["envVars"], "CARGO_CRATE_NAME=foo") {
	t.Fatalf("expected 'CARGO_CRATE_NAME=foo' in envVars, actual envVars: %#v", fizz.Args["envVars"])
	}
	if !strings.Contains(fizz.Args["envVars"], "CARGO_PKG_VERSION=1.0.0") {
	t.Fatalf("expected 'CARGO_PKG_VERSION=1.0.0' in envVars, actual envVars: %#v", fizz.Args["envVars"])
	}
	}

	func TestInstallDir(t *testing.T) {
	ctx := testRust(t, `
	rust_library_dylib {
	name: "libfoo",
	srcs: ["foo.rs"],
	crate_name: "foo",
	}
	rust_binary {
	name: "fizzbuzz",
	srcs: ["foo.rs"],
	}`)

	install_path_lib64 := ctx.ModuleForTests("libfoo",
	"android_arm64_armv8-a_dylib").Module().(Module).compiler.(libraryDecorator).path.String()
	install_path_lib32 := ctx.ModuleForTests("libfoo",
	"android_arm_armv7-a-neon_dylib").Module().(Module).compiler.(libraryDecorator).path.String()
	install_path_bin := ctx.ModuleForTests("fizzbuzz",
	"android_arm64_armv8-a").Module().(Module).compiler.(binaryDecorator).path.String()

	if !strings.HasSuffix(install_path_lib64, "system/lib64/libfoo.dylib.so") {
	t.Fatalf("unexpected install path for 64-bit library: %#v", install_path_lib64)
	}
	if !strings.HasSuffix(install_path_lib32, "system/lib/libfoo.dylib.so") {
	t.Fatalf("unexpected install path for 32-bit library: %#v", install_path_lib32)
	}
	if !strings.HasSuffix(install_path_bin, "system/bin/fizzbuzz") {
	t.Fatalf("unexpected install path for binary: %#v", install_path_bin)
	}
	}

	func TestLints(t *testing.T) {

	bp := `
	// foo uses the default value of lints
	rust_library {
	name: "libfoo",
	srcs: ["foo.rs"],
	crate_name: "foo",
	}
	// bar forces the use of the "android" lint set
	rust_library {
	name: "libbar",
	srcs: ["foo.rs"],
	crate_name: "bar",
	lints: "android",
	}
	// foobar explicitly disable all lints
	rust_library {
	name: "libfoobar",
	srcs: ["foo.rs"],
	crate_name: "foobar",
	lints: "none",
	}`

	var lintTests = []struct {
	modulePath string
	fooFlags string
	}{
	{"", "${config.RustDefaultLints}"},
	{"external/", "${config.RustAllowAllLints}"},
	{"hardware/", "${config.RustVendorLints}"},
	}

	for _, tc := range lintTests {
	t.Run("path="+tc.modulePath, func(t *testing.T) {

	result := android.GroupFixturePreparers(
	prepareForRustTest,
	// Test with the blueprint file in different directories.
	android.FixtureAddTextFile(tc.modulePath+"Android.bp", bp),
	).RunTest(t)

	r := result.ModuleForTests("libfoo", "android_arm64_armv8-a_dylib").MaybeRule("rustc")
	android.AssertStringDoesContain(t, "libfoo flags", r.Args["rustcFlags"], tc.fooFlags)

	r = result.ModuleForTests("libbar", "android_arm64_armv8-a_dylib").MaybeRule("rustc")
	android.AssertStringDoesContain(t, "libbar flags", r.Args["rustcFlags"], "${config.RustDefaultLints}")

	r = result.ModuleForTests("libfoobar", "android_arm64_armv8-a_dylib").MaybeRule("rustc")
	android.AssertStringDoesContain(t, "libfoobar flags", r.Args["rustcFlags"], "${config.RustAllowAllLints}")
	})
	}
	}

	// Test that devices are linking the stdlib dynamically
	func TestStdDeviceLinkage(t *testing.T) {
	ctx := testRust(t, `
	rust_binary {
	name: "fizz",
	srcs: ["foo.rs"],
	}
	rust_library {
	name: "libfoo",
	srcs: ["foo.rs"],
	crate_name: "foo",
	}`)
	fizz := ctx.ModuleForTests("fizz", "android_arm64_armv8-a").Module().(*Module)
	fooRlib := ctx.ModuleForTests("libfoo", "android_arm64_armv8-a_rlib_dylib-std").Module().(*Module)
	fooDylib := ctx.ModuleForTests("libfoo", "android_arm64_armv8-a_dylib").Module().(*Module)

	if !android.InList("libstd", fizz.Properties.AndroidMkDylibs) {
	t.Errorf("libstd is not linked dynamically for device binaries")
	}
	if !android.InList("libstd", fooRlib.Properties.AndroidMkDylibs) {
	t.Errorf("libstd is not linked dynamically for rlibs")
	}
	if !android.InList("libstd", fooDylib.Properties.AndroidMkDylibs) {
	t.Errorf("libstd is not linked dynamically for dylibs")
	}
	}

	// Ensure that manual link flags are disallowed.
	func TestManualLinkageRejection(t *testing.T) {
	// rustc flags
	testRustError(t, ".* cannot be manually specified", `
	rust_binary {
	name: "foo",
	srcs: [
	"foo.rs",
	],
	flags: ["-lbar"],
	}
	`)
	testRustError(t, ".* cannot be manually specified", `
	rust_binary {
	name: "foo",
	srcs: [
	"foo.rs",
	],
	flags: ["--extern=foo"],
	}
	`)
	testRustError(t, ".* cannot be manually specified", `
	rust_binary {
	name: "foo",
	srcs: [
	"foo.rs",
	],
	flags: ["-Clink-args=foo"],
	}
	`)
	testRustError(t, ".* cannot be manually specified", `
	rust_binary {
	name: "foo",
	srcs: [
	"foo.rs",
	],
	flags: ["-C link-args=foo"],
	}
	`)
	testRustError(t, ".* cannot be manually specified", `
	rust_binary {
	name: "foo",
	srcs: [
	"foo.rs",
	],
	flags: ["-L foo/"],
	}
	`)

	// lld flags
	testRustError(t, ".* cannot be manually specified", `
	rust_binary {
	name: "foo",
	srcs: [
	"foo.rs",
	],
	ld_flags: ["-Wl,-L bar/"],
	}
	`)
	testRustError(t, ".* cannot be manually specified", `
	rust_binary {
	name: "foo",
	srcs: [
	"foo.rs",
	],
	ld_flags: ["-Wl,-lbar"],
	}
	`)
	}