diff --git a/dlls/msvcirt/msvcirt.c b/dlls/msvcirt/msvcirt.c
index 9a39b1ae9d0..f860c9550d6 100644
--- a/dlls/msvcirt/msvcirt.c
+++ b/dlls/msvcirt/msvcirt.c
@@ -32,6 +32,19 @@ WINE_DEFAULT_DEBUG_CHANNEL(msvcirt);
 #define RESERVE_SIZE 512
 #define STATEBUF_SIZE 8
 
+/* ?sh_none@filebuf@@2HB */
+const int filebuf_sh_none = 0x800;
+/* ?sh_read@filebuf@@2HB */
+const int filebuf_sh_read = 0xa00;
+/* ?sh_write@filebuf@@2HB */
+const int filebuf_sh_write = 0xc00;
+/* ?openprot@filebuf@@2HB */
+const int filebuf_openprot = 420;
+/* ?binary@filebuf@@2HB */
+const int filebuf_binary = 0x8000;
+/* ?text@filebuf@@2HB */
+const int filebuf_text = 0x4000;
+
 /* ?adjustfield@ios@@2JB */
 const LONG ios_adjustfield = FLAGS_left | FLAGS_right | FLAGS_internal;
 /* ?basefield@ios@@2JB */
diff --git a/dlls/msvcirt/msvcirt.spec b/dlls/msvcirt/msvcirt.spec
index 249ee910f7a..ffb6f2138d6 100644
--- a/dlls/msvcirt/msvcirt.spec
+++ b/dlls/msvcirt/msvcirt.spec
@@ -415,7 +415,7 @@
 @ thiscall -arch=win32 ?base@streambuf@@IBEPADXZ(ptr) streambuf_base
 @ cdecl -arch=win64 ?base@streambuf@@IEBAPEADXZ(ptr) streambuf_base
 @ extern ?basefield@ios@@2JB ios_basefield
-# @ extern ?binary@filebuf@@2HB  # static int const filebuf::binary
+@ extern ?binary@filebuf@@2HB filebuf_binary
 @ cdecl ?bitalloc@ios@@SAJXZ() ios_bitalloc
 @ thiscall -arch=win32 ?blen@streambuf@@IBEHXZ(ptr) streambuf_blen
 @ cdecl -arch=win64 ?blen@streambuf@@IEBAHXZ(ptr) streambuf_blen
@@ -570,7 +570,7 @@
 @ stub -arch=win64 ?open@ifstream@@QEAAXPEBDHH@Z
 @ stub -arch=win32 ?open@ofstream@@QAEXPBDHH@Z  # void __thiscall ofstream::open(char const *,int,int)
 @ stub -arch=win64 ?open@ofstream@@QEAAXPEBDHH@Z
-# @ extern ?openprot@filebuf@@2HB  # static int const filebuf::openprot
+@ extern ?openprot@filebuf@@2HB filebuf_openprot
 @ stub -arch=win32 ?opfx@ostream@@QAEHXZ  # int __thiscall ostream::opfx(void)
 @ stub -arch=win64 ?opfx@ostream@@QEAAHXZ
 @ stub -arch=win32 ?osfx@ostream@@QAEXXZ  # void __thiscall ostream::osfx(void)
@@ -697,9 +697,9 @@
 @ cdecl -arch=win64 ?sgetc@streambuf@@QEAAHXZ(ptr) streambuf_sgetc
 @ thiscall -arch=win32 ?sgetn@streambuf@@QAEHPADH@Z(ptr ptr long) streambuf_sgetn
 @ cdecl -arch=win64 ?sgetn@streambuf@@QEAAHPEADH@Z(ptr ptr long) streambuf_sgetn
-# @ extern ?sh_none@filebuf@@2HB  # static int const filebuf::sh_none
-# @ extern ?sh_read@filebuf@@2HB  # static int const filebuf::sh_read
-# @ extern ?sh_write@filebuf@@2HB  # static int const filebuf::sh_write
+@ extern ?sh_none@filebuf@@2HB filebuf_sh_none
+@ extern ?sh_read@filebuf@@2HB filebuf_sh_read
+@ extern ?sh_write@filebuf@@2HB filebuf_sh_write
 @ thiscall -arch=win32 ?snextc@streambuf@@QAEHXZ(ptr) streambuf_snextc
 @ cdecl -arch=win64 ?snextc@streambuf@@QEAAHXZ(ptr) streambuf_snextc
 @ thiscall -arch=win32 ?sputbackc@streambuf@@QAEHD@Z(ptr long) streambuf_sputbackc
@@ -736,7 +736,7 @@
 @ stub -arch=win64 ?tellg@istream@@QEAAJXZ
 @ stub -arch=win32 ?tellp@ostream@@QAEJXZ  # long __thiscall ostream::tellp(void)
 @ stub -arch=win64 ?tellp@ostream@@QEAAJXZ
-# @ extern ?text@filebuf@@2HB  # static int const filebuf::text
+@ extern ?text@filebuf@@2HB filebuf_text
 @ thiscall -arch=win32 ?tie@ios@@QAEPAVostream@@PAV2@@Z(ptr ptr) ios_tie_set
 @ cdecl -arch=win64 ?tie@ios@@QEAAPEAVostream@@PEAV2@@Z(ptr ptr) ios_tie_set
 @ thiscall -arch=win32 ?tie@ios@@QBEPAVostream@@XZ(ptr) ios_tie_get
diff --git a/dlls/msvcrt20/msvcrt20.spec b/dlls/msvcrt20/msvcrt20.spec
index ab59dde441a..ade81ae15f4 100644
--- a/dlls/msvcrt20/msvcrt20.spec
+++ b/dlls/msvcrt20/msvcrt20.spec
@@ -403,7 +403,7 @@
 @ thiscall -arch=win32 ?base@streambuf@@IBEPADXZ(ptr) msvcirt.?base@streambuf@@IBEPADXZ
 @ cdecl -arch=win64 ?base@streambuf@@IEBAPEADXZ(ptr) msvcirt.?base@streambuf@@IEBAPEADXZ
 @ extern ?basefield@ios@@2JB msvcirt.?basefield@ios@@2JB
-# @ extern ?binary@filebuf@@2HB
+@ extern ?binary@filebuf@@2HB msvcirt.?binary@filebuf@@2HB
 @ cdecl ?bitalloc@ios@@SAJXZ() msvcirt.?bitalloc@ios@@SAJXZ
 @ thiscall -arch=win32 ?blen@streambuf@@IBEHXZ(ptr) msvcirt.?blen@streambuf@@IBEHXZ
 @ cdecl -arch=win64 ?blen@streambuf@@IEBAHXZ(ptr) msvcirt.?blen@streambuf@@IEBAHXZ
@@ -556,7 +556,7 @@
 @ stub -arch=win64 ?open@ifstream@@QEAAXPEBDHH@Z
 @ stub -arch=win32 ?open@ofstream@@QAEXPBDHH@Z
 @ stub -arch=win64 ?open@ofstream@@QEAAXPEBDHH@Z
-# @ extern ?openprot@filebuf@@2HB
+@ extern ?openprot@filebuf@@2HB msvcirt.?openprot@filebuf@@2HB
 @ stub -arch=win32 ?opfx@ostream@@QAEHXZ
 @ stub -arch=win64 ?opfx@ostream@@QEAAHXZ
 @ stub -arch=win32 ?osfx@ostream@@QAEXXZ
@@ -685,9 +685,9 @@
 @ cdecl -arch=win64 ?sgetc@streambuf@@QEAAHXZ(ptr) msvcirt.?sgetc@streambuf@@QEAAHXZ
 @ thiscall -arch=win32 ?sgetn@streambuf@@QAEHPADH@Z(ptr ptr long) msvcirt.?sgetn@streambuf@@QAEHPADH@Z
 @ cdecl -arch=win64 ?sgetn@streambuf@@QEAAHPEADH@Z(ptr ptr long) msvcirt.?sgetn@streambuf@@QEAAHPEADH@Z
-# @ extern ?sh_none@filebuf@@2HB
-# @ extern ?sh_read@filebuf@@2HB
-# @ extern ?sh_write@filebuf@@2HB
+@ extern ?sh_none@filebuf@@2HB msvcirt.?sh_none@filebuf@@2HB
+@ extern ?sh_read@filebuf@@2HB msvcirt.?sh_read@filebuf@@2HB
+@ extern ?sh_write@filebuf@@2HB msvcirt.?sh_write@filebuf@@2HB
 @ thiscall -arch=win32 ?snextc@streambuf@@QAEHXZ(ptr) msvcirt.?snextc@streambuf@@QAEHXZ
 @ cdecl -arch=win64 ?snextc@streambuf@@QEAAHXZ(ptr) msvcirt.?snextc@streambuf@@QEAAHXZ
 @ thiscall -arch=win32 ?sputbackc@streambuf@@QAEHD@Z(ptr long) msvcirt.?sputbackc@streambuf@@QAEHD@Z
@@ -725,7 +725,7 @@
 @ stub -arch=win32 ?tellp@ostream@@QAEJXZ
 @ stub -arch=win64 ?tellp@ostream@@QEAAJXZ
 @ cdecl ?terminate@@YAXXZ() msvcrt.?terminate@@YAXXZ
-# @ extern ?text@filebuf@@2HB
+@ extern ?text@filebuf@@2HB msvcirt.?text@filebuf@@2HB
 @ thiscall -arch=win32 ?tie@ios@@QAEPAVostream@@PAV2@@Z(ptr ptr) msvcirt.?tie@ios@@QAEPAVostream@@PAV2@@Z
 @ cdecl -arch=win64 ?tie@ios@@QEAAPEAVostream@@PEAV2@@Z(ptr ptr) msvcirt.?tie@ios@@QEAAPEAVostream@@PEAV2@@Z
 @ thiscall -arch=win32 ?tie@ios@@QBEPAVostream@@XZ(ptr) msvcirt.?tie@ios@@QBEPAVostream@@XZ
diff --git a/dlls/msvcrt40/msvcrt40.spec b/dlls/msvcrt40/msvcrt40.spec
index 0f5811a10df..33e4f1680a4 100644
--- a/dlls/msvcrt40/msvcrt40.spec
+++ b/dlls/msvcrt40/msvcrt40.spec
@@ -468,7 +468,7 @@
 @ extern ?basefield@ios@@2JB msvcirt.?basefield@ios@@2JB
 @ thiscall -arch=i386 ?before@type_info@@QBEHABV1@@Z(ptr ptr) msvcrt.?before@type_info@@QBEHABV1@@Z
 @ cdecl -arch=win64 ?before@type_info@@QEBAHAEBV1@@Z(ptr ptr) msvcrt.?before@type_info@@QEBAHAEBV1@@Z
-# @ extern ?binary@filebuf@@2HB
+@ extern ?binary@filebuf@@2HB msvcirt.?binary@filebuf@@2HB
 @ cdecl ?bitalloc@ios@@SAJXZ() msvcirt.?bitalloc@ios@@SAJXZ
 @ thiscall -arch=win32 ?blen@streambuf@@IBEHXZ(ptr) msvcirt.?blen@streambuf@@IBEHXZ
 @ cdecl -arch=win64 ?blen@streambuf@@IEBAHXZ(ptr) msvcirt.?blen@streambuf@@IEBAHXZ
@@ -625,7 +625,7 @@
 @ stub -arch=win64 ?open@ifstream@@QEAAXPEBDHH@Z
 @ stub -arch=win32 ?open@ofstream@@QAEXPBDHH@Z
 @ stub -arch=win64 ?open@ofstream@@QEAAXPEBDHH@Z
-# @ extern ?openprot@filebuf@@2HB
+@ extern ?openprot@filebuf@@2HB msvcirt.?openprot@filebuf@@2HB
 @ stub -arch=win32 ?opfx@ostream@@QAEHXZ
 @ stub -arch=win64 ?opfx@ostream@@QEAAHXZ
 @ stub -arch=win32 ?osfx@ostream@@QAEXXZ
@@ -757,9 +757,9 @@
 @ cdecl -arch=win64 ?sgetc@streambuf@@QEAAHXZ(ptr) msvcirt.?sgetc@streambuf@@QEAAHXZ
 @ thiscall -arch=win32 ?sgetn@streambuf@@QAEHPADH@Z(ptr ptr long) msvcirt.?sgetn@streambuf@@QAEHPADH@Z
 @ cdecl -arch=win64 ?sgetn@streambuf@@QEAAHPEADH@Z(ptr ptr long) msvcirt.?sgetn@streambuf@@QEAAHPEADH@Z
-# @ extern ?sh_none@filebuf@@2HB
-# @ extern ?sh_read@filebuf@@2HB
-# @ extern ?sh_write@filebuf@@2HB
+@ extern ?sh_none@filebuf@@2HB msvcirt.?sh_none@filebuf@@2HB
+@ extern ?sh_read@filebuf@@2HB msvcirt.?sh_read@filebuf@@2HB
+@ extern ?sh_write@filebuf@@2HB msvcirt.?sh_write@filebuf@@2HB
 @ thiscall -arch=win32 ?snextc@streambuf@@QAEHXZ(ptr) msvcirt.?snextc@streambuf@@QAEHXZ
 @ cdecl -arch=win64 ?snextc@streambuf@@QEAAHXZ(ptr) msvcirt.?snextc@streambuf@@QEAAHXZ
 @ thiscall -arch=win32 ?sputbackc@streambuf@@QAEHD@Z(ptr long) msvcirt.?sputbackc@streambuf@@QAEHD@Z
@@ -797,7 +797,7 @@
 @ stub -arch=win32 ?tellp@ostream@@QAEJXZ
 @ stub -arch=win64 ?tellp@ostream@@QEAAJXZ
 @ cdecl ?terminate@@YAXXZ() msvcrt.?terminate@@YAXXZ
-# @ extern ?text@filebuf@@2HB
+@ extern ?text@filebuf@@2HB msvcirt.?text@filebuf@@2HB
 @ thiscall -arch=win32 ?tie@ios@@QAEPAVostream@@PAV2@@Z(ptr ptr) msvcirt.?tie@ios@@QAEPAVostream@@PAV2@@Z
 @ cdecl -arch=win64 ?tie@ios@@QEAAPEAVostream@@PEAV2@@Z(ptr ptr) msvcirt.?tie@ios@@QEAAPEAVostream@@PEAV2@@Z
 @ thiscall -arch=win32 ?tie@ios@@QBEPAVostream@@XZ(ptr) msvcirt.?tie@ios@@QBEPAVostream@@XZ