diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/runtime/traceback.go | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/runtime/traceback.go b/src/runtime/traceback.go index 96f154e213..80a54407b3 100644 --- a/src/runtime/traceback.go +++ b/src/runtime/traceback.go @@ -962,12 +962,21 @@ func isSystemGoroutine(gp *g) bool { // traceback function will only be called with the context field set // to zero. If the context function is nil, then calls from Go to C // to Go will not show a traceback for the C portion of the call stack. +// +// SetCgoTraceback should be called only once, ideally from an init function. func SetCgoTraceback(version int, traceback, context, symbolizer unsafe.Pointer) { if version != 0 { panic("unsupported version") } + if cgoTraceback != nil && cgoTraceback != traceback || + cgoContext != nil && cgoContext != context || + cgoSymbolizer != nil && cgoSymbolizer != symbolizer { + panic("call SetCgoTraceback only once") + } + cgoTraceback = traceback + cgoContext = context cgoSymbolizer = symbolizer // The context function is called when a C function calls a Go @@ -978,6 +987,7 @@ func SetCgoTraceback(version int, traceback, context, symbolizer unsafe.Pointer) } var cgoTraceback unsafe.Pointer +var cgoContext unsafe.Pointer var cgoSymbolizer unsafe.Pointer // cgoTracebackArg is the type passed to cgoTraceback. |