I am preparing update SWIG to version 4.2.0 in Fedora rawhide.

The build of ldns-1.8.3 is failing with this version.

./contrib/python/ldns_wrapper.c: In function '_wrap_ldns_rdf_type2str':
./contrib/python/ldns_wrapper.c:10133:16: error: implicit declaration of function 'SWIG_Python_str_AsChar'; did you mean 'SWIG_Python_str_FromChar'? [-Werror=implicit-function-declaration]
10133 |     arg1_str = SWIG_Python_str_AsChar(swig_obj[0]);
      |                ^~~~~~~~~~~~~~~~~~~~~~
      |                SWIG_Python_str_FromChar
./contrib/python/ldns_wrapper.c:10133:14: warning: assignment to 'char *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
10133 |     arg1_str = SWIG_Python_str_AsChar(swig_obj[0]);
      |              ^
./contrib/python/ldns_wrapper.c:10153:5: error: implicit declaration of function 'SWIG_Python_str_DelForPy3'; did you mean 'SWIG_Python_str_FromFormat'? [-Werror=implicit-function-declaration]
10153 |     SWIG_Python_str_DelForPy3(arg1_str); /* Is a empty macro for Python < 3. */
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~
      |     SWIG_Python_str_FromFormat


I reported it to SWIG upstream and they proposed solution
https://github.com/NLnetLabs/ldns/pull/231


Reproducible: Always