Created attachment 1927392 [details] perl-Curses-test-syms-c99.patch CursesDef.h is not available during feature probing using testsym.c, and the relevant Curses headers are not included because the macros guarding the inclusion are not defined. As a result, must of the feature tests fail in C99 mode because the compiler refuses to compile calls to undefined functions. rt.cpan.org no longer allows me to file tickets, and the upstream author says in the ticket that they prefer email anyway. So I'm filing this bug as a public reference.
Created attachment 1927393 [details] Additional patch to remove implicit ints
I contacted the upstream author by email, following the README instructions.