diff --git a/dlls/msvcp100/msvcp100.spec b/dlls/msvcp100/msvcp100.spec
index 538f37ff34d..6cb9b77b5f9 100644
--- a/dlls/msvcp100/msvcp100.spec
+++ b/dlls/msvcp100/msvcp100.spec
@@ -2710,12 +2710,12 @@
 @ cdecl -arch=win64 ?swap@?$basic_ostream@GU?$char_traits@G@std@@@std@@QEAAXAEAV12@@Z(ptr ptr) basic_ostream_wchar_swap
 @ thiscall -arch=win32 ?swap@?$basic_ostream@_WU?$char_traits@_W@std@@@std@@QAEXAAV12@@Z(ptr ptr) basic_ostream_wchar_swap
 @ cdecl -arch=win64 ?swap@?$basic_ostream@_WU?$char_traits@_W@std@@@std@@QEAAXAEAV12@@Z(ptr ptr) basic_ostream_wchar_swap
-@ stub -arch=win32 ?swap@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IAEXAAV12@@Z
-@ stub -arch=win64 ?swap@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IEAAXAEAV12@@Z
-@ stub -arch=win32 ?swap@?$basic_streambuf@GU?$char_traits@G@std@@@std@@IAEXAAV12@@Z
-@ stub -arch=win64 ?swap@?$basic_streambuf@GU?$char_traits@G@std@@@std@@IEAAXAEAV12@@Z
-@ stub -arch=win32 ?swap@?$basic_streambuf@_WU?$char_traits@_W@std@@@std@@IAEXAAV12@@Z
-@ stub -arch=win64 ?swap@?$basic_streambuf@_WU?$char_traits@_W@std@@@std@@IEAAXAEAV12@@Z
+@ thiscall -arch=win32 ?swap@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IAEXAAV12@@Z(ptr ptr) basic_streambuf_char_swap
+@ cdecl -arch=win64 ?swap@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IEAAXAEAV12@@Z(ptr ptr) basic_streambuf_char_swap
+@ thiscall -arch=win32 ?swap@?$basic_streambuf@GU?$char_traits@G@std@@@std@@IAEXAAV12@@Z(ptr ptr) basic_streambuf_wchar_swap
+@ cdecl -arch=win64 ?swap@?$basic_streambuf@GU?$char_traits@G@std@@@std@@IEAAXAEAV12@@Z(ptr ptr) basic_streambuf_wchar_swap
+@ thiscall -arch=win32 ?swap@?$basic_streambuf@_WU?$char_traits@_W@std@@@std@@IAEXAAV12@@Z(ptr ptr) basic_streambuf_wchar_swap
+@ cdecl -arch=win64 ?swap@?$basic_streambuf@_WU?$char_traits@_W@std@@@std@@IEAAXAEAV12@@Z(ptr ptr) basic_streambuf_wchar_swap
 @ thiscall -arch=win32 ?swap@ios_base@std@@QAEXAAV12@@Z(ptr ptr) ios_base_swap
 @ cdecl -arch=win64 ?swap@ios_base@std@@QEAAXAEAV12@@Z(ptr ptr) ios_base_swap
 @ thiscall -arch=win32 ?sync@?$basic_istream@DU?$char_traits@D@std@@@std@@QAEHXZ(ptr) basic_istream_char_sync
diff --git a/dlls/msvcp110/msvcp110.spec b/dlls/msvcp110/msvcp110.spec
index 8e01521004c..54d2ae4c726 100644
--- a/dlls/msvcp110/msvcp110.spec
+++ b/dlls/msvcp110/msvcp110.spec
@@ -3497,15 +3497,15 @@
 @ cdecl -arch=arm ?swap@?$basic_ostream@_WU?$char_traits@_W@std@@@std@@IAAXAAV12@@Z(ptr ptr) basic_ostream_wchar_swap
 @ thiscall -arch=i386 ?swap@?$basic_ostream@_WU?$char_traits@_W@std@@@std@@IAEXAAV12@@Z(ptr ptr) basic_ostream_wchar_swap
 @ cdecl -arch=win64 ?swap@?$basic_ostream@_WU?$char_traits@_W@std@@@std@@IEAAXAEAV12@@Z(ptr ptr) basic_ostream_wchar_swap
-@ stub -arch=arm ?swap@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IAAXAAV12@@Z
-@ stub -arch=i386 ?swap@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IAEXAAV12@@Z
-@ stub -arch=win64 ?swap@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IEAAXAEAV12@@Z
-@ stub -arch=arm ?swap@?$basic_streambuf@GU?$char_traits@G@std@@@std@@IAAXAAV12@@Z
-@ stub -arch=i386 ?swap@?$basic_streambuf@GU?$char_traits@G@std@@@std@@IAEXAAV12@@Z
-@ stub -arch=win64 ?swap@?$basic_streambuf@GU?$char_traits@G@std@@@std@@IEAAXAEAV12@@Z
-@ stub -arch=arm ?swap@?$basic_streambuf@_WU?$char_traits@_W@std@@@std@@IAAXAAV12@@Z
-@ stub -arch=i386 ?swap@?$basic_streambuf@_WU?$char_traits@_W@std@@@std@@IAEXAAV12@@Z
-@ stub -arch=win64 ?swap@?$basic_streambuf@_WU?$char_traits@_W@std@@@std@@IEAAXAEAV12@@Z
+@ cdecl -arch=arm ?swap@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IAAXAAV12@@Z(ptr ptr) basic_streambuf_char_swap
+@ thiscall -arch=i386 ?swap@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IAEXAAV12@@Z(ptr ptr) basic_streambuf_char_swap
+@ cdecl -arch=win64 ?swap@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IEAAXAEAV12@@Z(ptr ptr) basic_streambuf_char_swap
+@ cdecl -arch=arm ?swap@?$basic_streambuf@GU?$char_traits@G@std@@@std@@IAAXAAV12@@Z(ptr ptr) basic_streambuf_wchar_swap
+@ thiscall -arch=i386 ?swap@?$basic_streambuf@GU?$char_traits@G@std@@@std@@IAEXAAV12@@Z(ptr ptr) basic_streambuf_wchar_swap
+@ cdecl -arch=win64 ?swap@?$basic_streambuf@GU?$char_traits@G@std@@@std@@IEAAXAEAV12@@Z(ptr ptr) basic_streambuf_wchar_swap
+@ cdecl -arch=arm ?swap@?$basic_streambuf@_WU?$char_traits@_W@std@@@std@@IAAXAAV12@@Z(ptr ptr) basic_streambuf_wchar_swap
+@ thiscall -arch=i386 ?swap@?$basic_streambuf@_WU?$char_traits@_W@std@@@std@@IAEXAAV12@@Z(ptr ptr) basic_streambuf_wchar_swap
+@ cdecl -arch=win64 ?swap@?$basic_streambuf@_WU?$char_traits@_W@std@@@std@@IEAAXAEAV12@@Z(ptr ptr) basic_streambuf_wchar_swap
 @ cdecl -arch=arm ?swap@ios_base@std@@QAAXAAV12@@Z(ptr ptr) ios_base_swap
 @ thiscall -arch=i386 ?swap@ios_base@std@@QAEXAAV12@@Z(ptr ptr) ios_base_swap
 @ cdecl -arch=win64 ?swap@ios_base@std@@QEAAXAEAV12@@Z(ptr ptr) ios_base_swap
diff --git a/dlls/msvcp90/ios.c b/dlls/msvcp90/ios.c
index f730898c20b..fbba9579a1b 100644
--- a/dlls/msvcp90/ios.c
+++ b/dlls/msvcp90/ios.c
@@ -1746,6 +1746,25 @@ streamsize __thiscall basic_streambuf_char_sputn(basic_streambuf_char *this, con
     return call_basic_streambuf_char_xsputn(this, ptr, count);
 }
 
+/* ?swap@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IAEXAAV12@@Z */
+/* ?swap@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IEAAXAEAV12@@Z */
+DEFINE_THISCALL_WRAPPER(basic_streambuf_char_swap, 8)
+void __thiscall basic_streambuf_char_swap(basic_streambuf_char *this, basic_streambuf_char *r)
+{
+    basic_streambuf_char tmp;
+
+    TRACE("(%p %p)\n", this, r);
+
+    if(this == r)
+        return;
+
+    tmp = *this;
+    *this = *r;
+    this->vtable = tmp.vtable;
+    tmp.vtable = r->vtable;
+    *r = tmp;
+}
+
 /* ?setp@?$basic_streambuf@_WU?$char_traits@_W@std@@@std@@IAEXPA_W00@Z */
 /* ?setp@?$basic_streambuf@_WU?$char_traits@_W@std@@@std@@IEAAXPEA_W00@Z */
 /* ?setp@?$basic_streambuf@GU?$char_traits@G@std@@@std@@IAEXPAG00@Z */
@@ -2666,6 +2685,27 @@ streamsize __thiscall basic_streambuf_wchar_sputn(basic_streambuf_wchar *this, c
     return call_basic_streambuf_wchar_xsputn(this, ptr, count);
 }
 
+/* ?swap@?$basic_streambuf@GU?$char_traits@G@std@@@std@@IAEXAAV12@@Z */
+/* ?swap@?$basic_streambuf@GU?$char_traits@G@std@@@std@@IEAAXAEAV12@@Z */
+/* ?swap@?$basic_streambuf@_WU?$char_traits@_W@std@@@std@@IAEXAAV12@@Z */
+/* ?swap@?$basic_streambuf@_WU?$char_traits@_W@std@@@std@@IAEXAAV12@@Z */
+DEFINE_THISCALL_WRAPPER(basic_streambuf_wchar_swap, 8)
+void __thiscall basic_streambuf_wchar_swap(basic_streambuf_wchar *this, basic_streambuf_wchar *r)
+{
+    basic_streambuf_wchar tmp;
+
+    TRACE("(%p %p)\n", this, r);
+
+    if(this == r)
+        return;
+
+    tmp = *this;
+    *this = *r;
+    this->vtable = tmp.vtable;
+    tmp.vtable = r->vtable;
+    *r = tmp;
+}
+
 /* ?_Stinit@?1??_Init@?$basic_filebuf@DU?$char_traits@D@std@@@std@@IAEXPAU_iobuf@@W4_Initfl@23@@Z@4HA */
 /* ?_Stinit@?1??_Init@?$basic_filebuf@DU?$char_traits@D@std@@@std@@IEAAXPEAU_iobuf@@W4_Initfl@23@@Z@4HA */
 int basic_filebuf_char__Init__Stinit = 0;