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c9bb7ce2d7
The old Go object file format used linker symbols like "gofile..foo" to record references to the filename "foo". But the current object file format has a dedicated section for file names, so we don't need these useless prefixes anymore. Also, change DWARF generation to pass around the src.Pos directly, rather than the old file symbols, which it just turned back into a file index before writing out anyway. Finally, directly record the FileIndex into src.PosBase, so that we can skip the map lookups. Change-Id: Ia4a5ebfa95da271f2522e45befdb9f137c16d373 Reviewed-on: https://go-review.googlesource.com/c/go/+/523378 LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Cherry Mui <cherryyz@google.com> Auto-Submit: Matthew Dempsky <mdempsky@google.com>
47 lines
1.2 KiB
Go
47 lines
1.2 KiB
Go
// Copyright 2015 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package obj
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import (
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"cmd/internal/src"
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"fmt"
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"testing"
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)
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func TestGetFileSymbolAndLine(t *testing.T) {
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ctxt := new(Link)
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ctxt.hash = make(map[string]*LSym)
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ctxt.statichash = make(map[string]*LSym)
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afile := src.NewFileBase("a.go", "a.go")
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bfile := src.NewFileBase("b.go", "/foo/bar/b.go")
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lfile := src.NewLinePragmaBase(src.MakePos(afile, 8, 1), "linedir", "linedir", 100, 1)
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var tests = []struct {
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pos src.Pos
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want string
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}{
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{src.NoPos, "??:0"},
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{src.MakePos(afile, 1, 0), "a.go:1"},
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{src.MakePos(afile, 2, 0), "a.go:2"},
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{src.MakePos(bfile, 10, 4), "/foo/bar/b.go:10"},
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{src.MakePos(lfile, 10, 0), "linedir:102"}, // 102 == 100 + (10 - (7+1))
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}
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for _, test := range tests {
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fileIndex, line := ctxt.getFileIndexAndLine(ctxt.PosTable.XPos(test.pos))
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file := "??"
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if fileIndex >= 0 {
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file = ctxt.PosTable.FileTable()[fileIndex]
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}
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got := fmt.Sprintf("%s:%d", file, line)
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if got != test.want {
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t.Errorf("ctxt.getFileSymbolAndLine(%v) = %q, want %q", test.pos, got, test.want)
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}
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}
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}
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