runtime: fix runtime gdb test with gdb v8.2

Previously, some of output from gdb matched with literal string, while
gdb v8.2 print the address of variable (e.g. map key and value) in
output.

This commit fix the regex in testing the output.

Fixes #27608

Change-Id: Ic3fe8280b9f93fda2799116804822616caa66beb
Reviewed-on: https://go-review.googlesource.com/135055
Run-TryBot: Ian Lance Taylor <[email protected]>
TryBot-Result: Gobot Gobot <[email protected]>
Reviewed-by: David Chase <[email protected]>

Author: shuLhan

src/runtime/runtime-gdb_test.go

@@ -242,14 +242,14 @@ func testGdbPython(t *testing.T, cgo bool) {
 		t.Fatalf("info goroutines failed: %s", bl)
 	}
 
-	printMapvarRe1 := regexp.MustCompile(`\Q = map[string]string = {["abc"] = "def", ["ghi"] = "jkl"}\E$`)
-	printMapvarRe2 := regexp.MustCompile(`\Q = map[string]string = {["ghi"] = "jkl", ["abc"] = "def"}\E$`)
+	printMapvarRe1 := regexp.MustCompile(`^\$[0-9]+ = map\[string\]string = {\[(0x[0-9a-f]+\s+)?"abc"\] = (0x[0-9a-f]+\s+)?"def", \[(0x[0-9a-f]+\s+)?"ghi"\] = (0x[0-9a-f]+\s+)?"jkl"}$`)
+	printMapvarRe2 := regexp.MustCompile(`^\$[0-9]+ = map\[string\]string = {\[(0x[0-9a-f]+\s+)?"ghi"\] = (0x[0-9a-f]+\s+)?"jkl", \[(0x[0-9a-f]+\s+)?"abc"\] = (0x[0-9a-f]+\s+)?"def"}$`)
 	if bl := blocks["print mapvar"]; !printMapvarRe1.MatchString(bl) &&
 		!printMapvarRe2.MatchString(bl) {
 		t.Fatalf("print mapvar failed: %s", bl)
 	}
 
-	strVarRe := regexp.MustCompile(`\Q = "abc"\E$`)
+	strVarRe := regexp.MustCompile(`^\$[0-9]+ = (0x[0-9a-f]+\s+)?"abc"$`)
 	if bl := blocks["print strvar"]; !strVarRe.MatchString(bl) {
 		t.Fatalf("print strvar failed: %s", bl)
 	}
@@ -263,8 +263,11 @@ func testGdbPython(t *testing.T, cgo bool) {
 	// aggregates from their fields and reverted their printing
 	// back to its original form.
 
-	infoLocalsRe := regexp.MustCompile(`slicevar *= *\[\]string *= *{"def"}`)
-	if bl := blocks["info locals"]; !infoLocalsRe.MatchString(bl) {
+	infoLocalsRe1 := regexp.MustCompile(`slicevar *= *\[\]string *= *{"def"}`)
+	// Format output from gdb v8.2
+	infoLocalsRe2 := regexp.MustCompile(`^slicevar = .*\nmapvar = .*\nstrvar = 0x[0-9a-f]+ "abc"`)
+	if bl := blocks["info locals"]; !infoLocalsRe1.MatchString(bl) &&
+		!infoLocalsRe2.MatchString(bl) {
 		t.Fatalf("info locals failed: %s", bl)
 	}
 
@@ -425,11 +428,11 @@ func TestGdbAutotmpTypes(t *testing.T) {
 
 	// Check that the backtrace matches the source code.
 	types := []string{
-		"struct []main.astruct;",
-		"struct bucket<string,main.astruct>;",
-		"struct hash<string,main.astruct>;",
-		"struct main.astruct;",
-		"typedef struct hash<string,main.astruct> * map[string]main.astruct;",
+		"[]main.astruct;",
+		"bucket<string,main.astruct>;",
+		"hash<string,main.astruct>;",
+		"main.astruct;",
+		"hash<string,main.astruct> * map[string]main.astruct;",
 	}
 	for _, name := range types {
 		if !strings.Contains(sgot, name) {