In C++, class constructor implemented in header files behave differently in ndk r25 and r26 version.

[Tony-Lee7]

The code in the example below is problematic at runtime in only r26 version.

class Test {
public:
Test() {
m_data = nullptr;
}
...
mByte* m_data;
}

If I change the following, the problem disappears.

• Modifying the code using initialization list. Like,
  Test() : m_data(nullptr) {}

• Changing the Optimization option level. Like,
  APP_CFLAGS += -O1
  APP_CPPFLAGS += -O1
  APP_LDFLAGS := -O1

I would appreciate it if you could explain what difference between r25 and r26 causes this problem.