diff --git a/dlls/msvcp90/ios.c b/dlls/msvcp90/ios.c
index 8699aa84d5f..28577952eaa 100644
--- a/dlls/msvcp90/ios.c
+++ b/dlls/msvcp90/ios.c
@@ -173,6 +173,14 @@ typedef struct {
      */
 } basic_ostringstream_char;
 
+typedef struct {
+    basic_istream_char base;
+    basic_stringbuf_char strbuf;
+    /* virtual inheritance
+     * basic_ios_char basic_ios;
+     */
+} basic_istringstream_char;
+
 extern const vtable_ptr MSVCP_iosb_vtable;
 
 /* ??_7ios_base@std@@6B@ */
@@ -258,6 +266,11 @@ const int basic_ostringstream_char_vbtable[] = {0, sizeof(basic_ostringstream_ch
 /* ??_7?$basic_ostringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@6B@ */
 extern const vtable_ptr MSVCP_basic_ostringstream_char_vtable;
 
+/* ??_8?$basic_istringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@7B@ */
+const int basic_istringstream_char_vbtable[] = {0, sizeof(basic_istringstream_char)};
+/* ??_7?$basic_istringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@6B@ */
+extern const vtable_ptr MSVCP_basic_istringstream_char_vtable;
+
 DEFINE_RTTI_DATA0(iosb, 0, ".?AV?$_Iosb@H@std@@");
 DEFINE_RTTI_DATA1(ios_base, 0, &iosb_rtti_base_descriptor, ".?AV?$_Iosb@H@std@@");
 DEFINE_RTTI_DATA2(basic_ios_char, 0, &ios_base_rtti_base_descriptor, &iosb_rtti_base_descriptor,
@@ -318,6 +331,10 @@ DEFINE_RTTI_DATA4(basic_ostringstream_char, sizeof(basic_ostringstream_char),
         &basic_ostream_char_rtti_base_descriptor, &basic_ios_char_rtti_base_descriptor,
         &ios_base_rtti_base_descriptor, &iosb_rtti_base_descriptor,
         ".?AV?$basic_ostringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@");
+DEFINE_RTTI_DATA4(basic_istringstream_char, sizeof(basic_istringstream_char),
+        &basic_ostream_char_rtti_base_descriptor, &basic_ios_char_rtti_base_descriptor,
+        &ios_base_rtti_base_descriptor, &iosb_rtti_base_descriptor,
+        ".?AV?$basic_istringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@");
 
 #ifndef __GNUC__
 void __asm_dummy_vtables(void) {
@@ -407,6 +424,7 @@ void __asm_dummy_vtables(void) {
     __ASM_VTABLE(basic_ifstream_char, "");
     __ASM_VTABLE(basic_fstream_char, "");
     __ASM_VTABLE(basic_ostringstream_char, "");
+    __ASM_VTABLE(basic_istringstream_char, "");
 #ifndef __GNUC__
 }
 #endif
@@ -8168,6 +8186,135 @@ basic_string_char* __thiscall basic_ostringstream_char_str_get(const basic_ostri
     return basic_stringbuf_char_str_get(&this->strbuf, ret);
 }
 
+/* ??0?$basic_istringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAE@ABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@1@H@Z */
+/* ??0?$basic_istringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QEAA@AEBV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@1@H@Z */
+DEFINE_THISCALL_WRAPPER(basic_istringstream_char_ctor_str, 16)
+basic_istringstream_char* __thiscall basic_istringstream_char_ctor_str(basic_istringstream_char *this,
+        const basic_string_char *str, int mode, MSVCP_bool virt_init)
+{
+    basic_ios_char *basic_ios;
+
+    TRACE("(%p %p %d %d)\n", this, str, mode, virt_init);
+
+    if(virt_init) {
+        this->base.vbtable = basic_istringstream_char_vbtable;
+        basic_ios = basic_istream_char_get_basic_ios(&this->base);
+        basic_ios_char_ctor(basic_ios);
+    }else {
+        basic_ios = basic_istream_char_get_basic_ios(&this->base);
+    }
+
+    basic_stringbuf_char_ctor_str(&this->strbuf, str, mode|OPENMODE_in);
+    basic_istream_char_ctor(&this->base, &this->strbuf.base, FALSE, FALSE);
+    basic_ios->base.vtable = &MSVCP_basic_istringstream_char_vtable;
+    return this;
+}
+
+/* ??0?$basic_istringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAE@H@Z */
+/* ??0?$basic_istringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QEAA@H@Z */
+DEFINE_THISCALL_WRAPPER(basic_istringstream_char_ctor_mode, 12)
+basic_istringstream_char* __thiscall basic_istringstream_char_ctor_mode(
+        basic_istringstream_char *this, int mode, MSVCP_bool virt_init)
+{
+    basic_ios_char *basic_ios;
+
+    TRACE("(%p %d %d)\n", this, mode, virt_init);
+
+    if(virt_init) {
+        this->base.vbtable = basic_istringstream_char_vbtable;
+        basic_ios = basic_istream_char_get_basic_ios(&this->base);
+        basic_ios_char_ctor(basic_ios);
+    }else {
+        basic_ios = basic_istream_char_get_basic_ios(&this->base);
+    }
+
+    basic_stringbuf_char_ctor_mode(&this->strbuf, mode|OPENMODE_in);
+    basic_istream_char_ctor(&this->base, &this->strbuf.base, FALSE, FALSE);
+    basic_ios->base.vtable = &MSVCP_basic_istringstream_char_vtable;
+    return this;
+}
+
+/* ??_F?$basic_istringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAEXXZ */
+/* ??_F?$basic_istringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QEAAXXZ */
+DEFINE_THISCALL_WRAPPER(basic_istringstream_char_ctor, 8)
+basic_istringstream_char* __thiscall basic_istringstream_char_ctor(
+        basic_istringstream_char *this, MSVCP_bool virt_init)
+{
+    return basic_istringstream_char_ctor_mode(this, 0, virt_init);
+}
+
+/* ??1?$basic_istringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@UAE@XZ */
+/* ??1?$basic_istringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@UEAA@XZ */
+DEFINE_THISCALL_WRAPPER(basic_istringstream_char_dtor, 4)
+void __thiscall basic_istringstream_char_dtor(basic_istringstream_char *this)
+{
+    TRACE("(%p)\n", this);
+
+    basic_stringbuf_char_dtor(&this->strbuf);
+    basic_istream_char_dtor(&this->base);
+}
+
+/* ??_D?$basic_istringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAEXXZ */
+/* ??_D?$basic_istringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QEAAXXZ */
+DEFINE_THISCALL_WRAPPER(basic_istringstream_char_vbase_dtor, 4)
+void __thiscall basic_istringstream_char_vbase_dtor(basic_istringstream_char *this)
+{
+    TRACE("(%p)\n", this);
+
+    basic_istringstream_char_dtor(this);
+    basic_ios_char_dtor(basic_istream_char_get_basic_ios(&this->base));
+}
+
+DEFINE_THISCALL_WRAPPER(MSVCP_basic_istringstream_char_vector_dtor, 8)
+basic_istringstream_char* __thiscall MSVCP_basic_istringstream_char_vector_dtor(basic_ios_char *base, unsigned int flags)
+{
+    basic_istringstream_char *this = (basic_istringstream_char *)((char*)base - basic_istringstream_char_vbtable[1] + basic_istringstream_char_vbtable[0]);
+
+    TRACE("(%p %x)\n", this, flags);
+
+    if(flags & 2) {
+        /* we have an array, with the number of elements stored before the first object */
+        int i, *ptr = (int *)this-1;
+
+        for(i=*ptr-1; i>=0; i--)
+            basic_istringstream_char_vbase_dtor(this+i);
+        MSVCRT_operator_delete(ptr);
+    } else {
+        basic_istringstream_char_vbase_dtor(this);
+        if(flags & 1)
+            MSVCRT_operator_delete(this);
+    }
+
+    return this;
+}
+
+/* ?rdbuf@?$basic_istringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QBEPAV?$basic_stringbuf@DU?$char_traits@D@std@@V?$allocator@D@2@@2@XZ */
+/* ?rdbuf@?$basic_istringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QEBAPEAV?$basic_stringbuf@DU?$char_traits@D@std@@V?$allocator@D@2@@2@XZ */
+DEFINE_THISCALL_WRAPPER(basic_istringstream_char_rdbuf, 4)
+basic_stringbuf_char* __thiscall basic_istringstream_char_rdbuf(const basic_istringstream_char *this)
+{
+    TRACE("(%p)\n", this);
+    return (basic_stringbuf_char*)&this->strbuf;
+}
+
+/* ?str@?$basic_istringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAEXABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@2@@Z */
+/* ?str@?$basic_istringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QEAAXAEBV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@2@@Z */
+DEFINE_THISCALL_WRAPPER(basic_istringstream_char_str_set, 8)
+void __thiscall basic_istringstream_char_str_set(basic_istringstream_char *this, const basic_string_char *str)
+{
+    TRACE("(%p %p)\n", this, str);
+    basic_stringbuf_char_str_set(&this->strbuf, str);
+}
+
+/* ?str@?$basic_istringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QBE?AV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@2@XZ */
+/* ?str@?$basic_istringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QEBA?AV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@2@XZ */
+DEFINE_THISCALL_WRAPPER(basic_istringstream_char_str_get, 8)
+basic_string_char* __thiscall basic_istringstream_char_str_get(const basic_istringstream_char *this, basic_string_char *ret)
+{
+    TRACE("(%p %p)\n", this, ret);
+    return basic_stringbuf_char_str_get(&this->strbuf, ret);
+}
+
 static void __cdecl setprecision_func(ios_base *base, streamsize prec)
 {
     ios_base_precision_set(base, prec);
diff --git a/dlls/msvcp90/msvcp90.spec b/dlls/msvcp90/msvcp90.spec
index d1e97d86832..16c1d850022 100644
--- a/dlls/msvcp90/msvcp90.spec
+++ b/dlls/msvcp90/msvcp90.spec
@@ -654,10 +654,10 @@
 @ cdecl -arch=win64 ??0?$basic_istream@_WU?$char_traits@_W@std@@@std@@QEAA@PEAV?$basic_streambuf@_WU?$char_traits@_W@std@@@1@_N@Z(ptr ptr long long) basic_istream_wchar_ctor
 @ thiscall -arch=win32 ??0?$basic_istream@_WU?$char_traits@_W@std@@@std@@QAE@W4_Uninitialized@1@@Z(ptr long long) basic_istream_wchar_ctor_uninitialized
 @ cdecl -arch=win64 ??0?$basic_istream@_WU?$char_traits@_W@std@@@std@@QEAA@W4_Uninitialized@1@@Z(ptr long long) basic_istream_wchar_ctor_uninitialized
-@ stub -arch=win32 ??0?$basic_istringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAE@ABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@1@H@Z
-@ stub -arch=win64 ??0?$basic_istringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QEAA@AEBV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@1@H@Z
-@ stub -arch=win32 ??0?$basic_istringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAE@H@Z
-@ stub -arch=win64 ??0?$basic_istringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QEAA@H@Z
+@ thiscall -arch=win32 ??0?$basic_istringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAE@ABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@1@H@Z(ptr ptr long long) basic_istringstream_char_ctor_str
+@ cdecl -arch=win64 ??0?$basic_istringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QEAA@AEBV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@1@H@Z(ptr ptr long long) basic_istringstream_char_ctor_str
+@ thiscall -arch=win32 ??0?$basic_istringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAE@H@Z(ptr long long) basic_istringstream_char_ctor_mode
+@ cdecl -arch=win64 ??0?$basic_istringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QEAA@H@Z(ptr long long) basic_istringstream_char_ctor_mode
 @ stub -arch=win32 ??0?$basic_istringstream@GU?$char_traits@G@std@@V?$allocator@G@2@@std@@QAE@ABV?$basic_string@GU?$char_traits@G@std@@V?$allocator@G@2@@1@H@Z
 @ stub -arch=win64 ??0?$basic_istringstream@GU?$char_traits@G@std@@V?$allocator@G@2@@std@@QEAA@AEBV?$basic_string@GU?$char_traits@G@std@@V?$allocator@G@2@@1@H@Z
 @ stub -arch=win32 ??0?$basic_istringstream@GU?$char_traits@G@std@@V?$allocator@G@2@@std@@QAE@H@Z
@@ -1182,8 +1182,8 @@
 @ stub -arch=win64 ??1?$basic_istream@GU?$char_traits@G@std@@@std@@UEAA@XZ
 @ thiscall -arch=win32 ??1?$basic_istream@_WU?$char_traits@_W@std@@@std@@UAE@XZ(ptr) basic_istream_wchar_dtor
 @ cdecl -arch=win64 ??1?$basic_istream@_WU?$char_traits@_W@std@@@std@@UEAA@XZ(ptr) basic_istream_wchar_dtor
-@ stub -arch=win32 ??1?$basic_istringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@UAE@XZ
-@ stub -arch=win64 ??1?$basic_istringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@UEAA@XZ
+@ thiscall -arch=win32 ??1?$basic_istringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@UAE@XZ(ptr) basic_istringstream_char_dtor
+@ cdecl -arch=win64 ??1?$basic_istringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@UEAA@XZ(ptr) basic_istringstream_char_dtor
 @ stub -arch=win32 ??1?$basic_istringstream@GU?$char_traits@G@std@@V?$allocator@G@2@@std@@UAE@XZ
 @ stub -arch=win64 ??1?$basic_istringstream@GU?$char_traits@G@std@@V?$allocator@G@2@@std@@UEAA@XZ
 @ stub -arch=win32 ??1?$basic_istringstream@_WU?$char_traits@_W@std@@V?$allocator@_W@2@@std@@UAE@XZ
@@ -1797,7 +1797,7 @@
 @ extern ??_7?$basic_istream@DU?$char_traits@D@std@@@std@@6B@ MSVCP_basic_istream_char_vtable
 # extern ??_7?$basic_istream@GU?$char_traits@G@std@@@std@@6B@
 @ extern ??_7?$basic_istream@_WU?$char_traits@_W@std@@@std@@6B@ MSVCP_basic_istream_wchar_vtable
-# extern ??_7?$basic_istringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@6B@
+@ extern ??_7?$basic_istringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@6B@ MSVCP_basic_istringstream_char_vtable
 # extern ??_7?$basic_istringstream@GU?$char_traits@G@std@@V?$allocator@G@2@@std@@6B@
 # extern ??_7?$basic_istringstream@_WU?$char_traits@_W@std@@V?$allocator@_W@2@@std@@6B@
 @ extern ??_7?$basic_ofstream@DU?$char_traits@D@std@@@std@@6B@ MSVCP_basic_ofstream_char_vtable
@@ -1883,7 +1883,7 @@
 @ extern ??_8?$basic_istream@DU?$char_traits@D@std@@@std@@7B@ basic_istream_char_vbtable
 # extern ??_8?$basic_istream@GU?$char_traits@G@std@@@std@@7B@
 @ extern ??_8?$basic_istream@_WU?$char_traits@_W@std@@@std@@7B@ basic_istream_wchar_vbtable
-# extern ??_8?$basic_istringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@7B@
+@ extern ??_8?$basic_istringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@7B@ basic_istringstream_char_vbtable
 # extern ??_8?$basic_istringstream@GU?$char_traits@G@std@@V?$allocator@G@2@@std@@7B@
 # extern ??_8?$basic_istringstream@_WU?$char_traits@_W@std@@V?$allocator@_W@2@@std@@7B@
 @ extern ??_8?$basic_ofstream@DU?$char_traits@D@std@@@std@@7B@ basic_ofstream_char_vbtable
@@ -1925,8 +1925,8 @@
 @ stub -arch=win64 ??_D?$basic_istream@GU?$char_traits@G@std@@@std@@QEAAXXZ
 @ thiscall -arch=win32 ??_D?$basic_istream@_WU?$char_traits@_W@std@@@std@@QAEXXZ(ptr) basic_istream_wchar_vbase_dtor
 @ cdecl -arch=win64 ??_D?$basic_istream@_WU?$char_traits@_W@std@@@std@@QEAAXXZ(ptr) basic_istream_wchar_vbase_dtor
-@ stub -arch=win32 ??_D?$basic_istringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAEXXZ
-@ stub -arch=win64 ??_D?$basic_istringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QEAAXXZ
+@ thiscall -arch=win32 ??_D?$basic_istringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAEXXZ(ptr) basic_istringstream_char_vbase_dtor
+@ cdecl -arch=win64 ??_D?$basic_istringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QEAAXXZ(ptr) basic_istringstream_char_vbase_dtor
 @ stub -arch=win32 ??_D?$basic_istringstream@GU?$char_traits@G@std@@V?$allocator@G@2@@std@@QAEXXZ
 @ stub -arch=win64 ??_D?$basic_istringstream@GU?$char_traits@G@std@@V?$allocator@G@2@@std@@QEAAXXZ
 @ stub -arch=win32 ??_D?$basic_istringstream@_WU?$char_traits@_W@std@@V?$allocator@_W@2@@std@@QAEXXZ
@@ -1967,8 +1967,8 @@
 @ stub -arch=win64 ??_F?$basic_filebuf@GU?$char_traits@G@std@@@std@@QEAAXXZ
 @ stub -arch=win32 ??_F?$basic_filebuf@_WU?$char_traits@_W@std@@@std@@QAEXXZ
 @ stub -arch=win64 ??_F?$basic_filebuf@_WU?$char_traits@_W@std@@@std@@QEAAXXZ
-@ stub -arch=win32 ??_F?$basic_istringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAEXXZ
-@ stub -arch=win64 ??_F?$basic_istringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QEAAXXZ
+@ thiscall -arch=win32 ??_F?$basic_istringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAEXXZ(ptr long) basic_istringstream_char_ctor
+@ cdecl -arch=win64 ??_F?$basic_istringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QEAAXXZ(ptr long) basic_istringstream_char_ctor
 @ stub -arch=win32 ??_F?$basic_istringstream@GU?$char_traits@G@std@@V?$allocator@G@2@@std@@QAEXXZ
 @ stub -arch=win64 ??_F?$basic_istringstream@GU?$char_traits@G@std@@V?$allocator@G@2@@std@@QEAAXXZ
 @ stub -arch=win32 ??_F?$basic_istringstream@_WU?$char_traits@_W@std@@V?$allocator@_W@2@@std@@QAEXXZ
@@ -5037,8 +5037,8 @@
 @ cdecl -arch=win64 ?rdbuf@?$basic_ios@_WU?$char_traits@_W@std@@@std@@QEAAPEAV?$basic_streambuf@_WU?$char_traits@_W@std@@@2@PEAV32@@Z(ptr ptr) basic_ios_wchar_rdbuf_set
 @ thiscall -arch=win32 ?rdbuf@?$basic_ios@_WU?$char_traits@_W@std@@@std@@QBEPAV?$basic_streambuf@_WU?$char_traits@_W@std@@@2@XZ(ptr) basic_ios_wchar_rdbuf_get
 @ cdecl -arch=win64 ?rdbuf@?$basic_ios@_WU?$char_traits@_W@std@@@std@@QEBAPEAV?$basic_streambuf@_WU?$char_traits@_W@std@@@2@XZ(ptr) basic_ios_wchar_rdbuf_get
-@ stub -arch=win32 ?rdbuf@?$basic_istringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QBEPAV?$basic_stringbuf@DU?$char_traits@D@std@@V?$allocator@D@2@@2@XZ
-@ stub -arch=win64 ?rdbuf@?$basic_istringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QEBAPEAV?$basic_stringbuf@DU?$char_traits@D@std@@V?$allocator@D@2@@2@XZ
+@ thiscall -arch=win32 ?rdbuf@?$basic_istringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QBEPAV?$basic_stringbuf@DU?$char_traits@D@std@@V?$allocator@D@2@@2@XZ(ptr) basic_istringstream_char_rdbuf
+@ cdecl -arch=win64 ?rdbuf@?$basic_istringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QEBAPEAV?$basic_stringbuf@DU?$char_traits@D@std@@V?$allocator@D@2@@2@XZ(ptr) basic_istringstream_char_rdbuf
 @ stub -arch=win32 ?rdbuf@?$basic_istringstream@GU?$char_traits@G@std@@V?$allocator@G@2@@std@@QBEPAV?$basic_stringbuf@GU?$char_traits@G@std@@V?$allocator@G@2@@2@XZ
 @ stub -arch=win64 ?rdbuf@?$basic_istringstream@GU?$char_traits@G@std@@V?$allocator@G@2@@std@@QEBAPEAV?$basic_stringbuf@GU?$char_traits@G@std@@V?$allocator@G@2@@2@XZ
 @ stub -arch=win32 ?rdbuf@?$basic_istringstream@_WU?$char_traits@_W@std@@V?$allocator@_W@2@@std@@QBEPAV?$basic_stringbuf@_WU?$char_traits@_W@std@@V?$allocator@_W@2@@2@XZ
@@ -5446,10 +5446,10 @@
 @ cdecl -arch=win64 ?stossc@?$basic_streambuf@GU?$char_traits@G@std@@@std@@QEAAXXZ(ptr) basic_streambuf_wchar_stossc
 @ thiscall -arch=win32 ?stossc@?$basic_streambuf@_WU?$char_traits@_W@std@@@std@@QAEXXZ(ptr) basic_streambuf_wchar_stossc
 @ cdecl -arch=win64 ?stossc@?$basic_streambuf@_WU?$char_traits@_W@std@@@std@@QEAAXXZ(ptr) basic_streambuf_wchar_stossc
-@ stub -arch=win32 ?str@?$basic_istringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAEXABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@2@@Z
-@ stub -arch=win64 ?str@?$basic_istringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QEAAXAEBV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@2@@Z
-@ stub -arch=win32 ?str@?$basic_istringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QBE?AV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@2@XZ
-@ stub -arch=win64 ?str@?$basic_istringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QEBA?AV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@2@XZ
+@ thiscall -arch=win32 ?str@?$basic_istringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAEXABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@2@@Z(ptr ptr) basic_istringstream_char_str_set
+@ cdecl -arch=win64 ?str@?$basic_istringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QEAAXAEBV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@2@@Z(ptr ptr) basic_istringstream_char_str_set
+@ thiscall -arch=win32 ?str@?$basic_istringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QBE?AV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@2@XZ(ptr ptr) basic_istringstream_char_str_get
+@ cdecl -arch=win64 ?str@?$basic_istringstream@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QEBA?AV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@2@XZ(ptr ptr) basic_istringstream_char_str_get
 @ stub -arch=win32 ?str@?$basic_istringstream@GU?$char_traits@G@std@@V?$allocator@G@2@@std@@QAEXABV?$basic_string@GU?$char_traits@G@std@@V?$allocator@G@2@@2@@Z
 @ stub -arch=win64 ?str@?$basic_istringstream@GU?$char_traits@G@std@@V?$allocator@G@2@@std@@QEAAXAEBV?$basic_string@GU?$char_traits@G@std@@V?$allocator@G@2@@2@@Z
 @ stub -arch=win32 ?str@?$basic_istringstream@GU?$char_traits@G@std@@V?$allocator@G@2@@std@@QBE?AV?$basic_string@GU?$char_traits@G@std@@V?$allocator@G@2@@2@XZ