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path: root/src/runtime/debuglog.go
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Diffstat (limited to 'src/runtime/debuglog.go')
-rw-r--r--src/runtime/debuglog.go20
1 files changed, 16 insertions, 4 deletions
diff --git a/src/runtime/debuglog.go b/src/runtime/debuglog.go
index 100f2d370a..3ce3273f4d 100644
--- a/src/runtime/debuglog.go
+++ b/src/runtime/debuglog.go
@@ -665,13 +665,17 @@ func (r *debugLogReader) printVal() bool {
print("..(", r.uvarint(), " more bytes)..")
case debugLogPC:
- printDebugLogPC(uintptr(r.uvarint()))
+ printDebugLogPC(uintptr(r.uvarint()), false)
case debugLogTraceback:
n := int(r.uvarint())
for i := 0; i < n; i++ {
print("\n\t")
- printDebugLogPC(uintptr(r.uvarint()))
+ // gentraceback PCs are always return PCs.
+ // Convert them to call PCs.
+ //
+ // TODO(austin): Expand inlined frames.
+ printDebugLogPC(uintptr(r.uvarint()), true)
}
}
@@ -794,9 +798,17 @@ func printDebugLog() {
printunlock()
}
-func printDebugLogPC(pc uintptr) {
- print(hex(pc))
+// printDebugLogPC prints a single symbolized PC. If returnPC is true,
+// pc is a return PC that must first be converted to a call PC.
+func printDebugLogPC(pc uintptr, returnPC bool) {
fn := findfunc(pc)
+ if returnPC && (!fn.valid() || pc > fn.entry) {
+ // TODO(austin): Don't back up if the previous frame
+ // was a sigpanic.
+ pc--
+ }
+
+ print(hex(pc))
if !fn.valid() {
print(" [unknown PC]")
} else {