msvcirt: Add implementation of streambuf::stossc.

dlls/msvcirt/msvcirt.c

@@ -636,6 +636,25 @@ int __thiscall streambuf_sbumpc(streambuf *this)
     return ret;
 }
 
+/* ?stossc@streambuf@@QAEXXZ */
+/* ?stossc@streambuf@@QEAAXXZ */
+DEFINE_THISCALL_WRAPPER(streambuf_stossc, 4)
+void __thiscall streambuf_stossc(streambuf *this)
+{
+    TRACE("(%p)\n", this);
+    if (this->unbuffered) {
+        if (this->stored_char == EOF)
+            call_streambuf_underflow(this);
+        else
+            this->stored_char = EOF;
+    } else {
+        if (this->gptr >= this->egptr)
+            call_streambuf_underflow(this);
+        if (this->gptr < this->egptr)
+            this->gptr++;
+    }
+}
+
 /******************************************************************
  *		 ??1ios@@UAE@XZ (MSVCRTI.@)
  *        class ios & __thiscall ios::-ios<<(void)

dlls/msvcirt/msvcirt.spec

@@ -710,8 +710,8 @@
 @ cdecl -arch=win64 ?sputn@streambuf@@QEAAHPEBDH@Z(ptr str long) streambuf_sputn
 @ stub -arch=win32 ?stdiofile@stdiobuf@@QAEPAU_iobuf@@XZ  # struct _iobuf * __thiscall stdiobuf::stdiofile(void)
 @ stub -arch=win64 ?stdiofile@stdiobuf@@QEAAPEAU_iobuf@@XZ
-@ stub -arch=win32 ?stossc@streambuf@@QAEXXZ  # void __thiscall streambuf::stossc(void)
+@ thiscall -arch=win32 ?stossc@streambuf@@QAEXXZ(ptr) streambuf_stossc
-@ stub -arch=win64 ?stossc@streambuf@@QEAAXXZ
+@ cdecl -arch=win64 ?stossc@streambuf@@QEAAXXZ(ptr) streambuf_stossc
 @ stub -arch=win32 ?str@istrstream@@QAEPADXZ  # char * __thiscall istrstream::str(void)
 @ stub -arch=win64 ?str@istrstream@@QEAAPEADXZ
 @ stub -arch=win32 ?str@ostrstream@@QAEPADXZ  # char * __thiscall ostrstream::str(void)

dlls/msvcirt/tests/msvcirt.c

@@ -65,6 +65,7 @@ static streambuf* (*__thiscall p_streambuf_setbuf)(streambuf*, char*, int);
 static int (*__thiscall p_streambuf_sgetc)(streambuf*);
 static int (*__thiscall p_streambuf_snextc)(streambuf*);
 static int (*__thiscall p_streambuf_sputc)(streambuf*, int);
+static void (*__thiscall p_streambuf_stossc)(streambuf*);
 static int (*__thiscall p_streambuf_sync)(streambuf*);
 static void (*__thiscall p_streambuf_unlock)(streambuf*);
 static int (*__thiscall p_streambuf_xsgetn)(streambuf*, char*, int);
@@ -155,6 +156,7 @@ static BOOL init(void)
         SET(p_streambuf_sgetc, "?sgetc@streambuf@@QEAAHXZ");
         SET(p_streambuf_snextc, "?snextc@streambuf@@QEAAHXZ");
         SET(p_streambuf_sputc, "?sputc@streambuf@@QEAAHH@Z");
+        SET(p_streambuf_stossc, "?stossc@streambuf@@QEAAXXZ");
         SET(p_streambuf_sync, "?sync@streambuf@@UEAAHXZ");
         SET(p_streambuf_unlock, "?unlock@streambuf@@QEAAXXZ");
         SET(p_streambuf_xsgetn, "?xsgetn@streambuf@@UEAAHPEADH@Z");
@@ -176,6 +178,7 @@ static BOOL init(void)
         SET(p_streambuf_sgetc, "?sgetc@streambuf@@QAEHXZ");
         SET(p_streambuf_snextc, "?snextc@streambuf@@QAEHXZ");
         SET(p_streambuf_sputc, "?sputc@streambuf@@QAEHH@Z");
+        SET(p_streambuf_stossc, "?stossc@streambuf@@QAEXXZ");
         SET(p_streambuf_sync, "?sync@streambuf@@UAEHXZ");
         SET(p_streambuf_unlock, "?unlock@streambuf@@QAEXXZ");
         SET(p_streambuf_xsgetn, "?xsgetn@streambuf@@UAEHPADH@Z");
@@ -662,6 +665,30 @@ static void test_streambuf(void)
     ok(sb3.stored_char == EOF, "wrong stored character, expected EOF got %c\n", sb3.stored_char);
     ok(underflow_count == 54, "expected call to underflow\n");
 
+    /* stossc */
+    call_func1(p_streambuf_stossc, &sb);
+    ok(sb.gptr == sb.eback + 3, "wrong get pointer, expected %p got %p\n", sb.eback + 3, sb.gptr);
+    test_this = &sb2;
+    call_func1(p_streambuf_stossc, &sb2);
+    ok(sb2.gptr == sb2.egptr, "wrong get pointer, expected %p got %p\n", sb2.egptr, sb2.gptr);
+    ok(underflow_count == 55, "expected call to underflow\n");
+    get_end = 0;
+    call_func1(p_streambuf_stossc, &sb2);
+    ok(sb2.gptr == sb2.eback + 1, "wrong get pointer, expected %p got %p\n", sb2.eback + 1, sb2.gptr);
+    ok(underflow_count == 56, "expected call to underflow\n");
+    sb2.gptr = sb2.egptr - 1;
+    call_func1(p_streambuf_stossc, &sb2);
+    ok(sb2.gptr == sb2.egptr, "wrong get pointer, expected %p got %p\n", sb2.egptr, sb2.gptr);
+    ok(underflow_count == 56, "no call to underflow expected\n");
+    test_this = &sb3;
+    call_func1(p_streambuf_stossc, &sb3);
+    ok(sb3.stored_char == EOF, "wrong stored character, expected EOF got %c\n", sb3.stored_char);
+    ok(underflow_count == 57, "expected call to underflow\n");
+    sb3.stored_char = 'a';
+    call_func1(p_streambuf_stossc, &sb3);
+    ok(sb3.stored_char == EOF, "wrong stored character, expected EOF got %c\n", sb3.stored_char);
+    ok(underflow_count == 57, "no call to underflow expected\n");
+
     SetEvent(lock_arg.test[3]);
     WaitForSingleObject(thread, INFINITE);
 

dlls/msvcrt20/msvcrt20.spec

@@ -698,8 +698,8 @@
 @ cdecl -arch=win64 ?sputn@streambuf@@QEAAHPEBDH@Z(ptr str long) msvcirt.?sputn@streambuf@@QEAAHPEBDH@Z
 @ stub -arch=win32 ?stdiofile@stdiobuf@@QAEPAU_iobuf@@XZ
 @ stub -arch=win64 ?stdiofile@stdiobuf@@QEAAPEAU_iobuf@@XZ
-@ stub -arch=win32 ?stossc@streambuf@@QAEXXZ
+@ thiscall -arch=win32 ?stossc@streambuf@@QAEXXZ(ptr) msvcirt.?stossc@streambuf@@QAEXXZ
-@ stub -arch=win64 ?stossc@streambuf@@QEAAXXZ
+@ cdecl -arch=win64 ?stossc@streambuf@@QEAAXXZ(ptr) msvcirt.?stossc@streambuf@@QEAAXXZ
 @ stub -arch=win32 ?str@istrstream@@QAEPADXZ
 @ stub -arch=win64 ?str@istrstream@@QEAAPEADXZ
 @ stub -arch=win32 ?str@ostrstream@@QAEPADXZ

dlls/msvcrt40/msvcrt40.spec

@@ -770,8 +770,8 @@
 @ cdecl -arch=win64 ?sputn@streambuf@@QEAAHPEBDH@Z(ptr str long) msvcirt.?sputn@streambuf@@QEAAHPEBDH@Z
 @ stub -arch=win32 ?stdiofile@stdiobuf@@QAEPAU_iobuf@@XZ
 @ stub -arch=win64 ?stdiofile@stdiobuf@@QEAAPEAU_iobuf@@XZ
-@ stub -arch=win32 ?stossc@streambuf@@QAEXXZ
+@ thiscall -arch=win32 ?stossc@streambuf@@QAEXXZ(ptr) msvcirt.?stossc@streambuf@@QAEXXZ
-@ stub -arch=win64 ?stossc@streambuf@@QEAAXXZ
+@ cdecl -arch=win64 ?stossc@streambuf@@QEAAXXZ(ptr) msvcirt.?stossc@streambuf@@QEAAXXZ
 @ stub -arch=win32 ?str@istrstream@@QAEPADXZ
 @ stub -arch=win64 ?str@istrstream@@QEAAPEADXZ
 @ stub -arch=win32 ?str@ostrstream@@QAEPADXZ