[PATCH v2 0/1] MR1349: user32: Use standard C functions for memory allocation in combo.c.

[Alex Henrie (＠alexhenrie)]

The big win here is getting rid of the reimplementation of strdup.

--
  v2: user32: Use standard C functions for memory allocation in combo.c.

https://gitlab.winehq.org/wine/wine/-/merge_requests/1349

[PATCH v2 1/1] user32: Use standard C functions for memory allocation in combo.c.

[Alex Henrie]

From: Alex Henrie

The big win here is getting rid of the reimplementation of strdup.
---
 dlls/user32/combo.c | 44 ++++++++++++++++----------------------------
 1 file changed, 16 insertions(+), 28 deletions(-)

diff --git a/dlls/user32/combo.c b/dlls/user32/combo.c
index 5ea61c607be..d61e10ae26d 100644
--- a/dlls/user32/combo.c
+++ b/dlls/user32/combo.c
@@ -26,6 +26,7 @@
 #include "user_private.h"
 #include "controls.h"
 #include "wine/debug.h"
+#include "stdlib.h"

WINE_DEFAULT_DEBUG_CHANNEL(combo);

@@ -112,7 +113,7 @@ static LRESULT COMBO_NCCreate(HWND hwnd, LONG style)
 {
     LPHEADCOMBO lphc;

-    if (COMBO_Init() && (lphc = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(HEADCOMBO))) )
+    if( COMBO_Init() && (lphc = calloc( 1, sizeof(HEADCOMBO) )) )
     {
         lphc->self = hwnd;
         SetWindowLongPtrW( hwnd, 0, (LONG_PTR)lphc );
@@ -154,7 +155,7 @@ static LRESULT COMBO_NCDestroy( LPHEADCOMBO lphc )
            NtUserDestroyWindow( lphc->hWndLBox );

SetWindowLongPtrW( lphc->self, 0, 0 );
-       HeapFree( GetProcessHeap(), 0, lphc );
+       free( lphc );
    }
    return 0;
 }
@@ -641,7 +642,7 @@ static void CBPaintText(
         size = SendMessageW(lphc->hWndLBox, LB_GETTEXTLEN, id, 0);
    if (size == LB_ERR)
      FIXME("LB_ERR probably not handled yet\n");
-        if( (pText = HeapAlloc( GetProcessHeap(), 0, (size + 1) * sizeof(WCHAR))) )
+        if( (pText = malloc((size + 1) * sizeof(WCHAR))) )
    {
             /* size from LB_GETTEXTLEN may be too large, from LB_GETTEXT is accurate */
            size=SendMessageW(lphc->hWndLBox, LB_GETTEXT, id, (LPARAM)pText);
@@ -736,7 +737,7 @@ static void CBPaintText(
      if (!hdc_paint)
        NtUserReleaseDC( lphc->self, hdc );
    }
-   HeapFree( GetProcessHeap(), 0, pText );
+   free(pText);
 }

/***********************************************************************
@@ -830,7 +831,7 @@ static INT CBUpdateLBox( LPHEADCOMBO lphc, BOOL bSelect )
    length = SendMessageW( lphc->hWndEdit, WM_GETTEXTLENGTH, 0, 0 );

if( length > 0 )
-       pText = HeapAlloc( GetProcessHeap(), 0, (length + 1) * sizeof(WCHAR));
+       pText = malloc((length + 1) * sizeof(WCHAR));

TRACE("\t edit text length %i\n", length );

@@ -838,7 +839,7 @@ static INT CBUpdateLBox( LPHEADCOMBO lphc, BOOL bSelect )
    {
        GetWindowTextW( lphc->hWndEdit, pText, length + 1);
        idx = SendMessageW(lphc->hWndLBox, LB_FINDSTRING, -1, (LPARAM)pText);
-       HeapFree( GetProcessHeap(), 0, pText );
+       free(pText);
    }

SendMessageW(lphc->hWndLBox, LB_SETCURSEL, bSelect ? idx : -1, 0);
@@ -867,7 +868,7 @@ static void CBUpdateEdit( LPHEADCOMBO lphc , INT index )
        length = SendMessageW(lphc->hWndLBox, LB_GETTEXTLEN, index, 0);
        if( length != LB_ERR)
        {
-	   if( (pText = HeapAlloc( GetProcessHeap(), 0, (length + 1) * sizeof(WCHAR))) )
+           if( (pText = malloc((length + 1) * sizeof(WCHAR))) )
       {
                SendMessageW(lphc->hWndLBox, LB_GETTEXT, index, (LPARAM)pText);
       }
@@ -884,7 +885,7 @@ static void CBUpdateEdit( LPHEADCOMBO lphc , INT index )
    if( lphc->wState & CBF_FOCUSED )
       SendMessageW(lphc->hWndEdit, EM_SETSEL, 0, -1);

-   HeapFree( GetProcessHeap(), 0, pText );
+   free(pText);
 }

/***********************************************************************
@@ -1295,7 +1296,7 @@ static LRESULT COMBO_GetTextW( LPHEADCOMBO lphc, INT count, LPWSTR buf )
         /* 'length' is without the terminating character */
         if (length >= count)
         {
-            LPWSTR lpBuffer = HeapAlloc(GetProcessHeap(), 0, (length + 1) * sizeof(WCHAR));
+            WCHAR *lpBuffer = malloc((length + 1) * sizeof(WCHAR));
             if (!lpBuffer) goto error;
             length = SendMessageW(lphc->hWndLBox, LB_GETTEXT, idx, (LPARAM)lpBuffer);

@@ -1305,7 +1306,7 @@ static LRESULT COMBO_GetTextW( LPHEADCOMBO lphc, INT count, LPWSTR buf )
                 lstrcpynW( buf, lpBuffer, count );
                 length = count;
             }
-            HeapFree( GetProcessHeap(), 0, lpBuffer );
+            free(lpBuffer);
         }
         else length = SendMessageW(lphc->hWndLBox, LB_GETTEXT, idx, (LPARAM)buf);

@@ -1345,7 +1346,7 @@ static LRESULT COMBO_GetTextA( LPHEADCOMBO lphc, INT count, LPSTR buf )
         /* 'length' is without the terminating character */
         if (length >= count)
         {
-            LPSTR lpBuffer = HeapAlloc(GetProcessHeap(), 0, (length + 1) );
+            char *lpBuffer = malloc(length + 1);
             if (!lpBuffer) goto error;
             length = SendMessageA(lphc->hWndLBox, LB_GETTEXT, idx, (LPARAM)lpBuffer);

@@ -1355,7 +1356,7 @@ static LRESULT COMBO_GetTextA( LPHEADCOMBO lphc, INT count, LPSTR buf )
                 lstrcpynA( buf, lpBuffer, count );
                 length = count;
             }
-            HeapFree( GetProcessHeap(), 0, lpBuffer );
+            free(lpBuffer);
         }
         else length = SendMessageA(lphc->hWndLBox, LB_GETTEXT, idx, (LPARAM)buf);

@@ -1678,19 +1679,6 @@ static LRESULT COMBO_GetComboBoxInfo(const HEADCOMBO *lphc, COMBOBOXINFO *pcbi)
     return TRUE;
 }

-static char *strdupA(LPCSTR str)
-{
-    char *ret;
-    DWORD len;
-
-    if(!str) return NULL;
-
-    len = strlen(str);
-    ret = HeapAlloc(GetProcessHeap(), 0, len + 1);
-    memcpy(ret, str, len + 1);
-    return ret;
-}
-
 /***********************************************************************
  *           ComboWndProc_common
  */
@@ -1927,18 +1915,18 @@ LRESULT ComboWndProc_common( HWND hwnd, UINT message, WPARAM wParam, LPARAM lPar
                     LRESULT ret;
                     if( lphc->dwStyle & CBS_LOWERCASE )
                     {
-                        string = strdupA((LPSTR)lParam);
+                        string = strdup((char *)lParam);
                         CharLowerA(string);
                     }

else if( lphc->dwStyle & CBS_UPPERCASE )
                     {
-                        string = strdupA((LPSTR)lParam);
+                        string = strdup((char *)lParam);
                         CharUpperA(string);
                     }

ret = SendMessageA(lphc->hWndLBox, LB_ADDSTRING, 0, string ? (LPARAM)string : lParam);
-                    HeapFree(GetProcessHeap(), 0, string);
+                    free(string);
                     return ret;
                 }
    case CB_INSERTSTRING: