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cmd/compile: read safemode bit from package header
Ignore respective bit in export data, but leave the info to minimize format changes for 1.7. Scheduled to remove by 1.8. For #15772. Change-Id: Ifb3beea655367308a4e2d5dc8cb625915f904287 Reviewed-on: https://go-review.googlesource.com/23285 Run-TryBot: Robert Griesemer <gri@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com>
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@ -103,7 +103,9 @@ func Import(in *bufio.Reader) {
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// --- compiler-specific export data ---
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// read compiler-specific flags
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importpkg.Safe = p.bool()
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// read but ignore safemode bit (see issue #15772)
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p.bool() // formerly: importpkg.Safe = p.bool()
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// phase 2
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objcount = 0
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@ -784,6 +784,21 @@ func importfile(f *Val, indent []byte) {
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}
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}
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// process header lines
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for {
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p, err = imp.ReadString('\n')
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if err != nil {
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log.Fatalf("reading input: %v", err)
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}
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if p == "\n" {
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break // header ends with blank line
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}
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if strings.HasPrefix(p, "safe") {
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importpkg.Safe = true
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break // ok to ignore rest
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}
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}
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// assume files move (get installed)
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// so don't record the full path.
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linehistpragma(file[len(file)-len(path_)-2:]) // acts as #pragma lib
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@ -398,11 +398,8 @@ func (p *parser) import_package() {
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p.import_error()
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}
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importsafe := false
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// read but skip "safe" bit (see issue #15772)
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if p.tok == LNAME {
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if p.sym_.Name == "safe" {
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importsafe = true
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}
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p.next()
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}
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p.want(';')
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@ -413,7 +410,6 @@ func (p *parser) import_package() {
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} else if importpkg.Name != name {
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Yyerror("conflicting names %s and %s for package %q", importpkg.Name, name, importpkg.Path)
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}
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importpkg.Safe = importsafe
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typecheckok = true
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defercheckwidth()
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