Don't try to send signal while gdb is not started.

3 files changed, 12 insertions, 0 deletions

diff --git a/Makefile b/Makefile
index ee8e5e2..e4973ad 100644
--- a/Makefile
+++ b/Makefile
@@ -94,6 +94,7 @@ package-all:
 	@echo " WARNING: build on Windows not supported for now."
 	@echo "# Build darwin amd64..."
 	GOOS=darwin GOARCH=amd64 RELEASE=1 make -f $(ROOT_SRCDIR)/Makefile package
+	make -f $(ROOT_SRCDIR)/Makefile clean
 
 vendor: tools/glide glide.yaml
 	./tools/glide install --strip-vendor
diff --git a/gdb-native.go b/gdb-native.go
index a4e6189..4bae3d3 100644
--- a/gdb-native.go
+++ b/gdb-native.go
@@ -151,6 +151,9 @@ func (g *GdbNative) Write(args ...interface{}) error {
 
 // SendSignal is used to send a signal to remote process/gdb
 func (g *GdbNative) SendSignal(sig os.Signal) error {
+	if g.exeCmd == nil {
+		return fmt.Errorf("exeCmd not initialized")
+	}
 	return g.exeCmd.Process.Signal(sig)
 }
 
diff --git a/gdb-xds.go b/gdb-xds.go
index bb8ad2f..22e13ed 100644
--- a/gdb-xds.go
+++ b/gdb-xds.go
@@ -76,6 +76,9 @@ func (g *GdbXds) SetConfig(name string, value interface{}) error {
 // Init initializes gdb XDS
 func (g *GdbXds) Init() (int, error) {
 
+	// Reset command ID (also used to enable sending of signals)
+	g.cmdID = ""
+
 	// Define HTTP and WS url
 	baseURL := g.uri
 	if !strings.HasPrefix(g.uri, "http://") {
@@ -167,6 +170,7 @@ func (g *GdbXds) Close() error {
 	g.cbOnExit = nil
 	g.cbRead = nil
 	g.cbInferiorRead = nil
+	g.cmdID = ""
 
 	return nil
 }
@@ -285,6 +289,10 @@ func (g *GdbXds) Write(args ...interface{}) error {
 
 // SendSignal is used to send a signal to remote process/gdb
 func (g *GdbXds) SendSignal(sig os.Signal) error {
+	if g.cmdID == "" {
+		return fmt.Errorf("cmdID not set")
+	}
+
 	var body []byte
 	body, err := json.Marshal(apiv1.ExecSignalArgs{
 		CmdID:  g.cmdID,