vscode 的插件cpptools 0.9.3 需要glibc 2.18的版本，但是Centos 7 下没有这个版本的GLIBC，所以导致链接库丢失，后台服务不能正常运行。按以下步骤操作可修复此问题。

With the 0.9.3 it seems that both GLIBC_2.18 & GLIBC_2.17 is required.
However if you want a workaround try this:

0. wget http://ftp.gnu.org/gnu/glibc/glibc-2.18.tar.xz
1. tar xvf glibc-2.18.tar.xz
2. cd glibc-2.18
3. mkdir build
4. cd build
5. ../configure --prefix=/opt/glibc-2.18
6. sudo make install
7. Create a bash script file called Microsoft.VSCode.CPP.Extension.linux.sh in "~/.vscode/extension/ms-vscode.cpptools-0.9.3/bin" with the following contents...

#!/bin/bash
    /opt/glibc-2.18/lib/ld-linux-x86-64.so.2 --library-path /opt/glibc-2.18/lib:/lib64:/usr/local/lib64 ~/.vscode/extensions/ms-vscode.cpptools-0.9.3/bin/Microsoft.VSCode.CPP.Extension.linux  

8. chmod a+x Microsoft.VSCode.CPP.Extension.linux.sh
   You can try to start it on the comand line ./Microsoft.VSCode.CPP.Extension.linux.sh
   If it starts silently without errors, then you are fine, otherwise add missing dependencies to the --library-path option in the script,
   if not you will see something like this,

./Microsoft.VSCode.CPP.Extension.linux: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.18‘ not found (required by ./Microsoft.VSCode.CPP.Extension.linux)
./Microsoft.VSCode.CPP.Extension.linux: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.17‘ not found (required by ./Microsoft.VSCode.CPP.Extension.linux)

9. Modify "~/.vscode/extensions/ms-vscode.cpptools-0.9.3/out/src/LanguageServer/C_Cpp.js"
   Change the following line from " extensionsProcessName += ‘.linux‘; " to " extensionProcessName += ‘.linux.sh‘; "

VSCode cpptools 插件在Centos 7下不能正确显示符号列表的解决办法