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69 lines
1.8 KiB
Plaintext
69 lines
1.8 KiB
Plaintext
# Past garble versions might not properly patch cmd/link with "git apply"
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# when running inside a git repository. Skip the extra check with -short.
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[!short] [exec:git] exec git init -q
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[!short] [exec:git] env GARBLE_CACHE=${WORK}/garble-cache
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# Any build settings for the main build shouldn't affect building the linker.
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# If this flag makes it through when using build commands on std or cmd,
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# those commands are likely to fail as std and cmd are their own modules.
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env GOFLAGS=-modfile=${WORK}/go.mod
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exec garble build
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exec ./main
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! cmp stderr main.stderr
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[short] stop # no need to verify this with -short
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# The rebuilt linker should use the executable extension for the host GOOS,
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# not the target one. Not doing so might be harmless, but can result in
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# building the linker twice, wasting CPU and disk.
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[!windows] env GOOS=windows
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[windows] env GOOS=linux
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exec garble build
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[!windows] [exec:git] exists ${GARBLE_CACHE}/tool/link
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[!windows] [exec:git] ! exists ${GARBLE_CACHE}/tool/link.exe
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[windows] [exec:git] ! exists ${GARBLE_CACHE}/tool/link
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[windows] [exec:git] exists ${GARBLE_CACHE}/tool/link.exe
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env GOOS=
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# Verify a build without garble.
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go build
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exec ./main
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cmp stderr main.stderr
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-- go.mod --
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module test/main
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go 1.21
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-- main.go --
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package main
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import (
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"strconv"
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"strings"
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_ "unsafe"
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)
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type fakeModuleData struct {
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pcHeader *struct {
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magic uint32
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}
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}
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//go:linkname activeModules runtime.activeModules
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func activeModules() []*fakeModuleData
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// genericMagicValue returns magic value without last digit
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func genericMagicValue() string {
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mod := activeModules()[0]
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magicValHex := strings.ToUpper(strconv.FormatUint(uint64(mod.pcHeader.magic), 16))
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return "0x" + magicValHex[:len(magicValHex)-1] + "?"
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}
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func main() {
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println(genericMagicValue())
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}
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-- main.stderr --
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0xFFFFFFF?
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