summaryrefslogtreecommitdiffstats
path: root/test/inline_caller.go
diff options
context:
space:
mode:
Diffstat (limited to 'test/inline_caller.go')
-rw-r--r--test/inline_caller.go77
1 files changed, 77 insertions, 0 deletions
diff --git a/test/inline_caller.go b/test/inline_caller.go
new file mode 100644
index 0000000..daff145
--- /dev/null
+++ b/test/inline_caller.go
@@ -0,0 +1,77 @@
+// run -gcflags -l=4
+
+// Copyright 2017 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 main
+
+import (
+ "fmt"
+ "runtime"
+)
+
+type frame struct {
+ pc uintptr
+ file string
+ line int
+ ok bool
+}
+
+var (
+ skip int
+ globalFrame frame
+)
+
+func f() {
+ g() // line 27
+}
+
+func g() {
+ h() // line 31
+}
+
+func h() {
+ x := &globalFrame
+ x.pc, x.file, x.line, x.ok = runtime.Caller(skip) // line 36
+}
+
+//go:noinline
+func testCaller(skp int) frame {
+ skip = skp
+ f() // line 42
+ frame := globalFrame
+ if !frame.ok {
+ panic(fmt.Sprintf("skip=%d runtime.Caller failed", skp))
+ }
+ return frame
+}
+
+type wantFrame struct {
+ funcName string
+ line int
+}
+
+// -1 means don't care
+var expected = []wantFrame{
+ 0: {"main.h", 36},
+ 1: {"main.g", 31},
+ 2: {"main.f", 27},
+ 3: {"main.testCaller", 42},
+ 4: {"main.main", 68},
+ 5: {"runtime.main", -1},
+ 6: {"runtime.goexit", -1},
+}
+
+func main() {
+ for i := 0; i <= 6; i++ {
+ frame := testCaller(i) // line 68
+ fn := runtime.FuncForPC(frame.pc)
+ if expected[i].line >= 0 && frame.line != expected[i].line {
+ panic(fmt.Sprintf("skip=%d expected line %d, got line %d", i, expected[i].line, frame.line))
+ }
+ if fn.Name() != expected[i].funcName {
+ panic(fmt.Sprintf("skip=%d expected function %s, got %s", i, expected[i].funcName, fn.Name()))
+ }
+ }
+}