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cmd/go: add ForceLibrary to build hash

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When a command has a test that is not in package main, the main
package is built as a library, with ForceLibrary set. It can of course
also be built as an ordinary main package. If we don't record that fact
in the hash, then both variants of the command will use the same hash,
which causes a GODEBUG=gocacheverify=1 failure. It also seems unsafe
although it's not clear to me whether it can cause an actual failure.

Along with CL 121941,
Fixes #25666

Change-Id: I115ad249012f30fbe45cd0c41da86adc295fe4b2
Reviewed-on: https://go-review.googlesource.com/121942
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
This commit is contained in:
Ian Lance Taylor 2018-07-02 16:48:29 -07:00 committed by Brad Fitzpatrick
parent f00bfb385b
commit 9a97a2aae9
1 changed files with 3 additions and 0 deletions
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3
src/cmd/go/internal/work/exec.go
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@ -203,6 +203,9 @@ func (b *Builder) buildActionID(a *Action) cache.ActionID {
fmt.Fprintf(h, "goos %s goarch %s\n", cfg.Goos, cfg.Goarch)
fmt.Fprintf(h, "import %q\n", p.ImportPath)
fmt.Fprintf(h, "omitdebug %v standard %v local %v prefix %q\n", p.Internal.OmitDebug, p.Standard, p.Internal.Local, p.Internal.LocalPrefix)
if p.Internal.ForceLibrary {
fmt.Fprintf(h, "forcelibrary\n")
}
if len(p.CgoFiles)+len(p.SwigFiles) > 0 {
fmt.Fprintf(h, "cgo %q\n", b.toolID("cgo"))
cppflags, cflags, cxxflags, fflags, _, _ := b.CFlags(p)