Gentoo's Bugzilla –
Attachment 833601 Details for
Bug 881965app-admin/pwgen-2.08-r1 fails to compile (CLANG-STRICTER-SYSTEM): sha1.c:45:6: error: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Werror,-Wdeprecated-non-prototype]