{"id":1380,"date":"2007-06-22T01:32:00","date_gmt":"2007-06-22T01:32:00","guid":{"rendered":""},"modified":"-0001-11-30T00:00:00","modified_gmt":"-0001-11-29T22:00:00","slug":"Jare","status":"publish","type":"post","link":"https:\/\/iguanademos.com\/Jare\/wp\/?p=1380","title":{"rendered":"Funky Visual Studio 2005 bug"},"content":{"rendered":"

I ran into this today with VS2005 SP1: if you define the body of a specialization of a template class’ member function in a separate cpp file, the linker will barf:<\/p>\n

\n
\n

template<class T> struct A { void f() {} };
template<> void A<int>::f(); \/\/ body in a separate cpp<\/p>\n

void main()
{
  A<int> a;
  a.f(); \/\/ Linker complains that this function is undefined.
}<\/code><\/p>\n

\n<\/blockquote>\n

You have to define the body in all source files (or at least one) that actually use the specialization of that function, normally in the header file:<\/p>\n

\n
\n

template<class T> struct A { void f() {} };
template<> void A<int>::f() { }<\/p>\n

void main()
{
  A<int> a;
  a.f();
}<\/code><\/p>\n

\n<\/blockquote>\n

Not sure if I have explained correctly, but I hope you get the idea.<\/p>\n","protected":false},"excerpt":{"rendered":"

I ran into this today with VS2005 SP1: if you define the body of a specialization of a template class’ member function in a separate cpp file, the linker will barf: template<class T> struct A { void f() {} };template<> void A<int>::f(); \/\/ body in a separate cpp void main(){  A<int> a;  a.f(); \/\/ Linker complains that this function is undefined.} You have to define the body in … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[],"class_list":["post-1380","post","type-post","status-publish","format-standard","hentry"],"_links":{"self":[{"href":"https:\/\/iguanademos.com\/Jare\/wp\/index.php?rest_route=\/wp\/v2\/posts\/1380","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/iguanademos.com\/Jare\/wp\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/iguanademos.com\/Jare\/wp\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/iguanademos.com\/Jare\/wp\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/iguanademos.com\/Jare\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1380"}],"version-history":[{"count":0,"href":"https:\/\/iguanademos.com\/Jare\/wp\/index.php?rest_route=\/wp\/v2\/posts\/1380\/revisions"}],"wp:attachment":[{"href":"https:\/\/iguanademos.com\/Jare\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1380"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/iguanademos.com\/Jare\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1380"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/iguanademos.com\/Jare\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1380"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}