```
Objects/stringlib/fastsearch.h:358:30: warning: comparison of integers of different signs: 'Py_ssize_t' (aka 'long') and 'unsigned int' [-Wsign-compare]
Modules/socketmodule.c:1025:1: warning: unused function 'new_sockobject' [-Wunused-function]
Modules/signalmodule.c:195:1: warning: unused function 'timeval_from_double' [-Wunused-function]
Modules/_io/bufferedio.c:809:5: warning: use of bitwise '&' with boolean operands [-Wbitwise-instead-of-logical]
emcc: warning: object file output extension (.so) used for non-object output.  If you meant to build an object file please use `-c, `-r`, or `-shared` [-Wemcc]
```