mirror of
https://github.com/burrowers/garble.git
synced 2026-04-22 23:57:14 +08:00
Daniel Martí
52 lines
1.7 KiB
Plaintext
52 lines
1.7 KiB
Plaintext
# A fairly average Go build, importing some std libraries.
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# We always build for a foreign GOOS.
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# GOOS=windows, unless the host is already windows, in which case linux.
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# GOARCH=386, unless the host is already 386, in which case amd64.
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# This helps ensure good coverage for Windows and 32-bit architectures.
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#
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# We also ensure that intrinsics work as expected.
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# The compiler replaces calls to some functions with intrinsics in its ssa stage,
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# and it recognizes which functions via the package path and func name.
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# If we obfuscate those package paths without adjusting the compiler,
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# intrinsics aren't applied, causing performance loss or build errors.
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# We use the math/bits package, as its Len64 intrinsic is present in both arm
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# and arm64, and it is not part of the runtime nor its dependencies.
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[!windows] env GOOS=windows
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[windows] env GOOS=linux
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[!386] env GOARCH=386
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[386] env GOARCH=amd64
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exec garble build -gcflags=math/bits=-d=ssa/intrinsics/debug=1
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stderr 'intrinsic substitution for ReverseBytes32.*Bswap32'
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# As a last step, also test building for MacOS if we're not already on it.
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# We already cover Windows and Linux above, and MacOS is the other major OS.
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# The way it is implemented in the standard library, in particular with syscalls,
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# is different enough that it sometimes causes special bugs.
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[darwin] stop
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env GOOS=darwin
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env GOARCH=arm64
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exec garble build
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-- go.mod --
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module test/main
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go 1.23
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-- main.go --
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package main
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import "net/http"
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func main() {
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http.ListenAndServe("", nil)
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}
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-- 32bit.go --
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//go:build arm
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package main
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// Will give "out of bounds" if we don't correctly set up types.Config.Sizes.
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const is64bit = ^uint(0) >> 63 // 0 for 32-bit hosts, 1 for 64-bit ones.
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var x [1]struct{}
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var _ = x[is64bit]
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