diff --git a/dlls/msvcp100/msvcp100.spec b/dlls/msvcp100/msvcp100.spec
index 3d0db763434..b593c06bd4f 100644
--- a/dlls/msvcp100/msvcp100.spec
+++ b/dlls/msvcp100/msvcp100.spec
@@ -2686,12 +2686,12 @@
 @ cdecl -arch=win64 ?sungetc@?$basic_streambuf@GU?$char_traits@G@std@@@std@@QEAAGXZ(ptr) basic_streambuf_wchar_sungetc
 @ thiscall -arch=win32 ?sungetc@?$basic_streambuf@_WU?$char_traits@_W@std@@@std@@QAEGXZ(ptr) basic_streambuf_wchar_sungetc
 @ cdecl -arch=win64 ?sungetc@?$basic_streambuf@_WU?$char_traits@_W@std@@@std@@QEAAGXZ(ptr) basic_streambuf_wchar_sungetc
-@ stub -arch=win32 ?swap@?$basic_ios@DU?$char_traits@D@std@@@std@@QAEXAAV12@@Z
-@ stub -arch=win64 ?swap@?$basic_ios@DU?$char_traits@D@std@@@std@@QEAAXAEAV12@@Z
-@ stub -arch=win32 ?swap@?$basic_ios@GU?$char_traits@G@std@@@std@@QAEXAAV12@@Z
-@ stub -arch=win64 ?swap@?$basic_ios@GU?$char_traits@G@std@@@std@@QEAAXAEAV12@@Z
-@ stub -arch=win32 ?swap@?$basic_ios@_WU?$char_traits@_W@std@@@std@@QAEXAAV12@@Z
-@ stub -arch=win64 ?swap@?$basic_ios@_WU?$char_traits@_W@std@@@std@@QEAAXAEAV12@@Z
+@ thiscall -arch=win32 ?swap@?$basic_ios@DU?$char_traits@D@std@@@std@@QAEXAAV12@@Z(ptr ptr) basic_ios_char_swap
+@ cdecl -arch=win64 ?swap@?$basic_ios@DU?$char_traits@D@std@@@std@@QEAAXAEAV12@@Z(ptr ptr) basic_ios_char_swap
+@ thiscall -arch=win32 ?swap@?$basic_ios@GU?$char_traits@G@std@@@std@@QAEXAAV12@@Z(ptr ptr) basic_ios_wchar_swap
+@ cdecl -arch=win64 ?swap@?$basic_ios@GU?$char_traits@G@std@@@std@@QEAAXAEAV12@@Z(ptr ptr) basic_ios_wchar_swap
+@ thiscall -arch=win32 ?swap@?$basic_ios@_WU?$char_traits@_W@std@@@std@@QAEXAAV12@@Z(ptr ptr) basic_ios_wchar_swap
+@ cdecl -arch=win64 ?swap@?$basic_ios@_WU?$char_traits@_W@std@@@std@@QEAAXAEAV12@@Z(ptr ptr) basic_ios_wchar_swap
 @ stub -arch=win32 ?swap@?$basic_iostream@DU?$char_traits@D@std@@@std@@QAEXAAV12@@Z
 @ stub -arch=win64 ?swap@?$basic_iostream@DU?$char_traits@D@std@@@std@@QEAAXAEAV12@@Z
 @ stub -arch=win32 ?swap@?$basic_iostream@GU?$char_traits@G@std@@@std@@QAEXAAV12@@Z
diff --git a/dlls/msvcp110/msvcp110.spec b/dlls/msvcp110/msvcp110.spec
index ecf2db3d0d0..0618f4880f6 100644
--- a/dlls/msvcp110/msvcp110.spec
+++ b/dlls/msvcp110/msvcp110.spec
@@ -3461,15 +3461,15 @@
 @ cdecl -arch=arm ?sungetc@?$basic_streambuf@_WU?$char_traits@_W@std@@@std@@QAAGXZ(ptr) basic_streambuf_wchar_sungetc
 @ thiscall -arch=i386 ?sungetc@?$basic_streambuf@_WU?$char_traits@_W@std@@@std@@QAEGXZ(ptr) basic_streambuf_wchar_sungetc
 @ cdecl -arch=win64 ?sungetc@?$basic_streambuf@_WU?$char_traits@_W@std@@@std@@QEAAGXZ(ptr) basic_streambuf_wchar_sungetc
-@ stub -arch=arm ?swap@?$basic_ios@DU?$char_traits@D@std@@@std@@QAAXAAV12@@Z
-@ stub -arch=i386 ?swap@?$basic_ios@DU?$char_traits@D@std@@@std@@QAEXAAV12@@Z
-@ stub -arch=win64 ?swap@?$basic_ios@DU?$char_traits@D@std@@@std@@QEAAXAEAV12@@Z
-@ stub -arch=arm ?swap@?$basic_ios@GU?$char_traits@G@std@@@std@@QAAXAAV12@@Z
-@ stub -arch=i386 ?swap@?$basic_ios@GU?$char_traits@G@std@@@std@@QAEXAAV12@@Z
-@ stub -arch=win64 ?swap@?$basic_ios@GU?$char_traits@G@std@@@std@@QEAAXAEAV12@@Z
-@ stub -arch=arm ?swap@?$basic_ios@_WU?$char_traits@_W@std@@@std@@QAAXAAV12@@Z
-@ stub -arch=i386 ?swap@?$basic_ios@_WU?$char_traits@_W@std@@@std@@QAEXAAV12@@Z
-@ stub -arch=win64 ?swap@?$basic_ios@_WU?$char_traits@_W@std@@@std@@QEAAXAEAV12@@Z
+@ cdecl -arch=arm ?swap@?$basic_ios@DU?$char_traits@D@std@@@std@@QAAXAAV12@@Z(ptr ptr) basic_ios_char_swap
+@ thiscall -arch=i386 ?swap@?$basic_ios@DU?$char_traits@D@std@@@std@@QAEXAAV12@@Z(ptr ptr) basic_ios_char_swap
+@ cdecl -arch=win64 ?swap@?$basic_ios@DU?$char_traits@D@std@@@std@@QEAAXAEAV12@@Z(ptr ptr) basic_ios_char_swap
+@ cdecl -arch=arm ?swap@?$basic_ios@GU?$char_traits@G@std@@@std@@QAAXAAV12@@Z(ptr ptr) basic_ios_wchar_swap
+@ thiscall -arch=i386 ?swap@?$basic_ios@GU?$char_traits@G@std@@@std@@QAEXAAV12@@Z(ptr ptr) basic_ios_wchar_swap
+@ cdecl -arch=win64 ?swap@?$basic_ios@GU?$char_traits@G@std@@@std@@QEAAXAEAV12@@Z(ptr ptr) basic_ios_wchar_swap
+@ cdecl -arch=arm ?swap@?$basic_ios@_WU?$char_traits@_W@std@@@std@@QAAXAAV12@@Z(ptr ptr) basic_ios_wchar_swap
+@ thiscall -arch=i386 ?swap@?$basic_ios@_WU?$char_traits@_W@std@@@std@@QAEXAAV12@@Z(ptr ptr) basic_ios_wchar_swap
+@ cdecl -arch=win64 ?swap@?$basic_ios@_WU?$char_traits@_W@std@@@std@@QEAAXAEAV12@@Z(ptr ptr) basic_ios_wchar_swap
 @ stub -arch=arm ?swap@?$basic_iostream@DU?$char_traits@D@std@@@std@@IAAXAAV12@@Z
 @ stub -arch=i386 ?swap@?$basic_iostream@DU?$char_traits@D@std@@@std@@IAEXAAV12@@Z
 @ stub -arch=win64 ?swap@?$basic_iostream@DU?$char_traits@D@std@@@std@@IEAAXAEAV12@@Z
diff --git a/dlls/msvcp90/ios.c b/dlls/msvcp90/ios.c
index 14b3b258f2d..0ca65666ece 100644
--- a/dlls/msvcp90/ios.c
+++ b/dlls/msvcp90/ios.c
@@ -5505,6 +5505,26 @@ char __thiscall basic_ios_char_widen(basic_ios_char *this, char ch)
     return ctype_char_widen_ch(ctype_char_use_facet(this->strbuf->loc), ch);
 }
 
+/* ?swap@?$basic_ios@DU?$char_traits@D@std@@@std@@QAEXAAV12@@Z */
+/* ?swap@?$basic_ios@DU?$char_traits@D@std@@@std@@QEAAXAEAV12@@Z */
+DEFINE_THISCALL_WRAPPER(basic_ios_char_swap, 8)
+void __thiscall basic_ios_char_swap(basic_ios_char *this, basic_ios_char *r)
+{
+    void *swap_ptr;
+
+    TRACE("(%p %p)\n", this, r);
+
+    if(this == r)
+        return;
+
+    ios_base_swap(&this->base, &r->base);
+    swap_ptr = this->stream;
+    this->stream = r->stream;
+    r->stream = swap_ptr;
+    this->fillch ^= r->fillch;
+    r->fillch ^= this->fillch;
+    this->fillch ^= r->fillch;
+}
 
 /* ??0?$basic_ios@_WU?$char_traits@_W@std@@@std@@IAE@XZ */
 /* ??0?$basic_ios@_WU?$char_traits@_W@std@@@std@@IEAA@XZ */
@@ -5780,6 +5800,29 @@ wchar_t __thiscall basic_ios_wchar_widen(basic_ios_wchar *this, char ch)
     return ctype_wchar_widen_ch(ctype_wchar_use_facet(this->strbuf->loc), ch);
 }
 
+/* ?swap@?$basic_ios@GU?$char_traits@G@std@@@std@@QAEXAAV12@@Z */
+/* ?swap@?$basic_ios@GU?$char_traits@G@std@@@std@@QEAAXAEAV12@@Z */
+/* ?swap@?$basic_ios@_WU?$char_traits@_W@std@@@std@@QAEXAAV12@@Z */
+/* ?swap@?$basic_ios@_WU?$char_traits@_W@std@@@std@@QEAAXAEAV12@@Z */
+DEFINE_THISCALL_WRAPPER(basic_ios_wchar_swap, 8)
+void __thiscall basic_ios_wchar_swap(basic_ios_wchar *this, basic_ios_wchar *r)
+{
+    void *swap_ptr;
+
+    TRACE("(%p %p)\n", this, r);
+
+    if(this == r)
+        return;
+
+    ios_base_swap(&this->base, &r->base);
+    swap_ptr = this->stream;
+    this->stream = r->stream;
+    r->stream = swap_ptr;
+    this->fillch ^= r->fillch;
+    r->fillch ^= this->fillch;
+    this->fillch ^= r->fillch;
+}
+
 /* Caution: basic_ostream uses virtual inheritance.
  * All constructors have additional parameter that says if base class should be initialized.
  * Base class needs to be accessed using vbtable.