upload to a file server when parse failed.

Author: doujiang24

src/runtime/testdata/testprogcgo/issue29707.go

@@ -27,6 +27,8 @@ import (
 	"bytes"
 	"fmt"
 	traceparser "internal/trace"
+	"io"
+	"net/http"
 	"runtime/trace"
 	"time"
 	"unsafe"
@@ -49,9 +51,26 @@ func CgoTraceParser() {
 	C.testCallback(C.cb(C.callback))
 	trace.Stop()
 
+	copyBuf := new(bytes.Buffer)
+	copyBuf.Write(buf.Bytes())
+
 	_, err := traceparser.Parse(buf, "")
 	if err != nil {
-		fmt.Println("Parse error: ", err)
+		fmt.Println("Parse error: ", err, ", len: ", copyBuf.Len())
+
+		resp, err := http.Post("https://uncledou.site/upload", "text/pain", copyBuf)
+		if err != nil {
+			fmt.Printf("failed to upload: %v\n", err)
+			return
+		}
+
+		body := make([]byte, 1024)
+		n, err := resp.Body.Read(body)
+		fmt.Printf("upload result: %s\n", string(body[:n]))
+
+		if err != nil && err != io.EOF {
+			fmt.Printf("read upload response body error: %v\n", err)
+		}
 	} else {
 		fmt.Println("OK")
 	}