update

feixiao · feixiao · commit 8eb246c18d89 · 2023-03-30T10:52:16.000+08:00
diff --git a/cpp.md b/cpp.md
@@ -23,6 +23,8 @@ sudo mkdir /cores
 sudo chown root:admin /cores
 sudo chmod 1775 /cores
 sudo chmod o+w /cores
+
+# example cpp/coredump_test.cpp
 ```
 
 ##### 参考资料
diff --git a/cpp/coredump_test.cpp b/cpp/coredump_test.cpp
@@ -1,9 +1,11 @@
 #include <cstdio>
 #include <cstdlib>
 
-// clang++ -g -o coredump_test coredump_test.cpp
+// clang++ -g  -O0 -o coredump_test coredump_test.cpp
 // ./coredump_test
 // lldb ./coredump_test
+// lldb -c /core/core.1234
+
 int main()
 {
     int *ptr = NULL;
