I experienced an error during the build of plr on postgres 11:
plr.c:959:33: error: ‘FormData_pg_proc {aka struct FormData_pg_proc}’ has no member named ‘proiswindow’; did you mean ‘prokind’?
function->iswindow = procStruct->proiswindow;
Is there something broken with the pg_proc catalog?
Regards
Volkmar