wasphin opened a new issue #1264:
URL: https://github.com/apache/incubator-brpc/issues/1264
**Describe the bug (描述bug)**
```c++
class B1 {
public:
virtual ~B1() {}
};
class B2 {
public:
virtual ~B2() {}
static void* RunThis(void *arg);
void Run() {
// 有系统调用
...
foo();
}
virtual void foo() {}
};
class D1 : public B1, public B2 {
public:
void foo() override;
}
```
使用默认参数 ``bthread_start_background`` 执行了类似上面代码的任务, 结果崩溃在 ``D1::foo`` 部分, 此时显示
``this=0x0``.
改用 `pthead_create` 或添加 `BTHREAD_ATTR_PTHREAD` 属性后正常, 这个是使用方式不对还是有什么可能的问题?
**To Reproduce (复现方法)**
暂无最小复现例子.
**Expected behavior (期望行为)**
使用默认参数
**Versions (各种版本)**
OS: RHEL/CentOS 8
Compiler: 8.3.1
brpc: `7bda11bc312d422b3e293b19b8b82a711da26c94`
protobuf: 3.5.0
**Additional context/screenshots (更多上下文/截图)**
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