From 0b096c9e7544bfb118f5f5acfb3d6d4daa3902f0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Daniel=20Mart=C3=AD?= <mvdan@mvdan.cc>
Date: Tue, 24 Jan 2023 16:33:46 +0000
Subject: [PATCH] generate go_std_tables.go in its entirety

No more having to manually run the script and adapting it to Go code.
---
 go_std_tables.go                    |  9 ++++---
 scripts/gen-go-std-tables.sh        | 38 +++++++++++++++++++++++++++++
 scripts/runtime-linknamed-nodeps.sh | 11 ---------
 shared.go                           |  2 ++
 4 files changed, 46 insertions(+), 14 deletions(-)
 create mode 100755 scripts/gen-go-std-tables.sh
 delete mode 100755 scripts/runtime-linknamed-nodeps.sh

diff --git a/go_std_tables.go b/go_std_tables.go
index b988c27..4ab9707 100644
--- a/go_std_tables.go
+++ b/go_std_tables.go
@@ -1,13 +1,16 @@
+// Code generated by scripts/gen-go-std-tables.sh; DO NOT EDIT.
+
+// Generated from Go version devel go1.21-733ba92187 Tue Jan 24 13:28:54 2023 +0000.
+
 package main
 
-// Obtained from "go list -deps runtime" as of June 29th.
-// Note that the same command on Go 1.18 results in the same list.
 var runtimeAndDeps = map[string]bool{
 	"internal/goarch":          true,
 	"unsafe":                   true,
 	"internal/abi":             true,
 	"internal/cpu":             true,
 	"internal/bytealg":         true,
+	"internal/coverage/rtcov":  true,
 	"internal/goexperiment":    true,
 	"internal/goos":            true,
 	"runtime/internal/atomic":  true,
@@ -17,7 +20,6 @@ var runtimeAndDeps = map[string]bool{
 	"runtime":                  true,
 }
 
-// Obtained via scripts/runtime-linknamed-nodeps.sh as of 2022-11-01.
 var runtimeLinknamed = []string{
 	"arena",
 	"crypto/internal/boring",
@@ -37,6 +39,7 @@ var runtimeLinknamed = []string{
 	"runtime/coverage",
 	"runtime/debug",
 	"runtime/metrics",
+	"runtime/metrics_test",
 	"runtime/pprof",
 	"runtime/trace",
 	"sync",
diff --git a/scripts/gen-go-std-tables.sh b/scripts/gen-go-std-tables.sh
new file mode 100755
index 0000000..4b76daa
--- /dev/null
+++ b/scripts/gen-go-std-tables.sh
@@ -0,0 +1,38 @@
+#!/bin/bash
+
+# We can rewrite this bash script in Go if a dependency on bash and coreutils
+# is a problem during development.
+
+go_version=$(go env GOVERSION) # not "go version", to exclude GOOS/GOARCH
+
+runtime_and_deps=$(go list -deps runtime)
+
+# All packages that the runtime linknames to, except runtime and its dependencies.
+# This resulting list is what we need to "go list" when obfuscating the runtime,
+# as they are the packages that we may be missing.
+runtime_linknamed=$(comm -23 <(
+	sed -rn 's@//go:linkname .* ([^.]*)\.[^.]*@\1@p' $(go env GOROOT)/src/runtime/*.go | grep -vE '^main|^runtime\.' | sort -u
+) <(
+	# Note that we assume this is constant across platforms.
+	go list -deps runtime | sort -u
+))
+
+gofmt >go_std_tables.go <<EOF
+// Code generated by scripts/gen-go-std-tables.sh; DO NOT EDIT.
+
+// Generated from Go version ${go_version}.
+
+package main
+
+var runtimeAndDeps = map[string]bool{
+$(for path in ${runtime_and_deps}; do
+	echo "\"${path}\": true,"
+done)
+}
+
+var runtimeLinknamed = []string{
+$(for path in ${runtime_linknamed}; do
+	echo "\"${path}\"",
+done)
+}
+EOF
diff --git a/scripts/runtime-linknamed-nodeps.sh b/scripts/runtime-linknamed-nodeps.sh
deleted file mode 100755
index 98cf853..0000000
--- a/scripts/runtime-linknamed-nodeps.sh
+++ /dev/null
@@ -1,11 +0,0 @@
-#!/bin/bash
-
-# All packages that the runtime linknames to, except runtime and its dependencies.
-# This resulting list is what we need to "go list" when obfuscating the runtime,
-# as they are the packages that we may be missing.
-comm -23 <(
-	sed -rn 's@//go:linkname .* ([^.]*)\.[^.]*@\1@p' $(go env GOROOT)/src/runtime/*.go | grep -vE '^main|^runtime\.' | sort -u
-) <(
-	# Note that we assume this is constant across platforms.
-	go list -deps runtime | sort -u
-)
diff --git a/shared.go b/shared.go
index e2557ef..d5e800a 100644
--- a/shared.go
+++ b/shared.go
@@ -19,6 +19,8 @@ import (
 	"golang.org/x/mod/module"
 )
 
+//go:generate ./scripts/gen-go-std-tables.sh
+
 // sharedCache is shared as a read-only cache between the many garble toolexec
 // sub-processes.
 //