BUG: error: may be used uninitialized. In alpine
- [ x ] I have checked that this issue has not already been reported. (Not as a separate issue)

- [ x ] I have confirmed this bug exists on the latest version of pandas.

- [ ] (optional) I have confirmed this bug exists on the master branch of pandas.

---

#### Problem description
In an alpine contarner, running `pip3 install pandas=1.1.0`, 
results in error: 
```
'__pyx_v_year' may be used uninitialized in this function`
     7787 |             __pyx_v_year = (__pyx_v_year - 1);
          |             ~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~
    cc1: all warnings being treated as errors
    error: command 'gcc' failed with exit status 1
```

#### Expected Output

Successful install