pingus-0.7.6 fails to build with clang

[pacho2]

It can be reproduced on Gentoo:
https://bugs.gentoo.org/739312

And Debian:
https://clang.debian.net/status.php?version=13.0.0&key=NO_CAT
https://clang.debian.net/logs/2021-10-25-13.0.0/pingus_0.7.6-5.1_unstable_clang13.0.0.log

Build fails with this error:

In file included from src/lisp/getters.cpp:2:
src/lisp/getters.hpp:33:15: error: no viable conversion from 'std::shared_ptr<Lisp>' to 'const lisp::Lisp *'
  const Lisp* el = lisp->get_list_elem(1);
              ^    ~~~~~~~~~~~~~~~~~~~~~~
1 error generated.
scons: *** [build/src/lisp/getters.o] Error 1
scons: building terminated because of errors.
make: *** [debian/rules:24: build-stamp] Error 2

Thanks for your help

[pacho2]

We are applying this patch for now:

--- a/src/lisp/getters.hpp
+++ b/src/lisp/getters.hpp
@@ -31,7 +31,7 @@
   if(lisp->get_list_size() != 2)
     return false;
   
-  const Lisp* el = lisp->get_list_elem(1);
+  const Lisp* el = lisp->get_list_elem(1).get();
   return get(el, val);
 }
 
@@ -47,7 +47,7 @@
   list.clear();
   for(size_t n = 1; n < lisp->get_list_size(); ++n) {
     T val;
-    if(get(lisp->get_list_elem(n), val) == false) {
+    if(get(lisp->get_list_elem(n).get(), val) == false) {
       list.clear();
       return false;
     }