1 files changed, 91 insertions, 0 deletions
diff --git a/src/debug/pe/symbols_test.go b/src/debug/pe/symbols_test.go
new file mode 100644
index 0000000..c4dcd95
--- /dev/null
+++ b/src/debug/pe/symbols_test.go
@@ -0,0 +1,91 @@
+// Copyright 2022 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package pe
+
+import (
+	"fmt"
+	"testing"
+)
+
+type testpoint struct {
+	name   string
+	ok     bool
+	err    string
+	auxstr string
+}
+
+func TestReadCOFFSymbolAuxInfo(t *testing.T) {
+	testpoints := map[int]testpoint{
+		39: testpoint{
+			name:   ".rdata$.refptr.__native_startup_lock",
+			ok:     true,
+			auxstr: "{Size:8 NumRelocs:1 NumLineNumbers:0 Checksum:0 SecNum:16 Selection:2 _:[0 0 0]}",
+		},
+		81: testpoint{
+			name:   ".debug_line",
+			ok:     true,
+			auxstr: "{Size:994 NumRelocs:1 NumLineNumbers:0 Checksum:1624223678 SecNum:32 Selection:0 _:[0 0 0]}",
+		},
+		155: testpoint{
+			name: ".file",
+			ok:   false,
+			err:  "incorrect symbol storage class",
+		},
+	}
+
+	// The testdata PE object file below was selected from a release
+	// build from https://github.com/mstorsjo/llvm-mingw/releases; it
+	// corresponds to the mingw "crt2.o" object. The object itself was
+	// built using an x86_64 HOST=linux TARGET=windows clang cross
+	// compiler based on LLVM 13. More build details can be found at
+	// https://github.com/mstorsjo/llvm-mingw/releases.
+	f, err := Open("testdata/llvm-mingw-20211002-msvcrt-x86_64-crt2")
+	if err != nil {
+		t.Errorf("open failed with %v", err)
+	}
+	defer f.Close()
+	for k := range f.COFFSymbols {
+		tp, ok := testpoints[k]
+		if !ok {
+			continue
+		}
+		sym := &f.COFFSymbols[k]
+		if sym.NumberOfAuxSymbols == 0 {
+			t.Errorf("expected aux symbols for sym %d", k)
+			continue
+		}
+		name, nerr := sym.FullName(f.StringTable)
+		if nerr != nil {
+			t.Errorf("FullName(%d) failed with %v", k, nerr)
+			continue
+		}
+		if name != tp.name {
+			t.Errorf("name check for %d, got %s want %s", k, name, tp.name)
+			continue
+		}
+		ap, err := f.COFFSymbolReadSectionDefAux(k)
+		if tp.ok {
+			if err != nil {
+				t.Errorf("unexpected failure on %d, got error %v", k, err)
+				continue
+			}
+			got := fmt.Sprintf("%+v", *ap)
+			if got != tp.auxstr {
+				t.Errorf("COFFSymbolReadSectionDefAux on %d bad return, got:\n%s\nwant:\n%s\n", k, got, tp.auxstr)
+				continue
+			}
+		} else {
+			if err == nil {
+				t.Errorf("unexpected non-failure on %d", k)
+				continue
+			}
+			got := fmt.Sprintf("%v", err)
+			if got != tp.err {
+				t.Errorf("COFFSymbolReadSectionDefAux %d wrong error, got %q want %q", k, got, tp.err)
+				continue
+			}
+		}
+	}
+}