vcl: replace alloca() with std::unique_ptr

Change-Id: I82b982895ee422bcf5a23756df4d81c89bc47636

vcl/generic/fontmanager/fontconfig.cxx

@@ -53,8 +53,6 @@ using namespace psp;
 
 #include "rtl/ustrbuf.hxx"
 
-#include "sal/alloca.h"
-
 #include <utility>
 #include <algorithm>
 
@@ -1086,7 +1084,7 @@ bool PrintFontManager::Substitute( FontSelectPattern &rPattern, OUString& rMissi
             // update rMissingCodes by removing resolved unicodes
             if( !rMissingCodes.isEmpty() )
             {
-                sal_uInt32* pRemainingCodes = static_cast<sal_uInt32*>(alloca( rMissingCodes.getLength() * sizeof(sal_uInt32) ));
+                std::unique_ptr<sal_uInt32[]> const pRemainingCodes(new sal_uInt32[rMissingCodes.getLength()]);
                 int nRemainingLen = 0;
                 FcCharSet* unicodes;
                 if (!FcPatternGetCharSet(pSet->fonts[0], FC_CHARSET, 0, &unicodes))
@@ -1099,7 +1097,7 @@ bool PrintFontManager::Substitute( FontSelectPattern &rPattern, OUString& rMissi
                             pRemainingCodes[ nRemainingLen++ ] = nCode;
                     }
                 }
-                OUString sStillMissing(pRemainingCodes, nRemainingLen);
+                OUString sStillMissing(pRemainingCodes.get(), nRemainingLen);
 #if defined(ENABLE_DBUS) && defined(ENABLE_PACKAGEKIT)
                 if (get_xid_for_dbus())
                 {

vcl/generic/fontmanager/fontmanager.cxx

@@ -59,8 +59,6 @@
 #include <stdio.h>
 #endif
 
-#include "sal/alloca.h"
-
 #include <algorithm>
 #include <set>
 #include <unordered_set>
@@ -472,7 +470,7 @@ bool PrintFontManager::PrintFont::readAfmMetrics( MultiAtomProvider* pProvider,
 
         // first transform the character codes to unicode
         // note: this only works with single byte encodings
-        sal_Unicode* pUnicodes = static_cast<sal_Unicode*>(alloca( pInfo->numOfChars * sizeof(sal_Unicode)));
+        std::unique_ptr<sal_Unicode[]> const pUnicodes(new sal_Unicode[pInfo->numOfChars]);
         CharMetricInfo* pChar = pInfo->cmi;
         int i;
 

vcl/source/font/PhysicalFontCollection.cxx

@@ -18,7 +18,6 @@
  */
 
 #include <sal/types.h>
-#include <sal/alloca.h>
 
 #include <vector>
 
@@ -244,7 +243,7 @@ PhysicalFontFamily* PhysicalFontCollection::GetGlyphFallbackFont( FontSelectPatt
             // there is a matching fallback in the cache
             // so update rMissingCodes with codepoints not yet resolved by this fallback
             int nRemainingLength = 0;
-            sal_UCS4* pRemainingCodes = static_cast<sal_UCS4*>(alloca( rMissingCodes.getLength() * sizeof(sal_UCS4) ));
+            std::unique_ptr<sal_UCS4[]> const pRemainingCodes(new sal_UCS4[rMissingCodes.getLength()]);
             OUString aFontName;
 
             while( nStrIndex < rMissingCodes.getLength() )
@@ -254,7 +253,7 @@ PhysicalFontFamily* PhysicalFontCollection::GetGlyphFallbackFont( FontSelectPatt
                 if( !bCached || (rFontSelData.maSearchName != aFontName) )
                     pRemainingCodes[ nRemainingLength++ ] = cChar;
             }
-            rMissingCodes = OUString( pRemainingCodes, nRemainingLength );
+            rMissingCodes = OUString( pRemainingCodes.get(), nRemainingLength );
         }
         else
         {

vcl/unx/generic/printer/jobdata.cxx

@@ -22,7 +22,6 @@
 #include "vcl/printerinfomanager.hxx"
 #include "tools/stream.hxx"
 
-#include <sal/alloca.h>
 #include <rtl/strbuf.hxx>
 #include <memory>
 
@@ -293,9 +292,9 @@ bool JobData::constructFromStreamBuffer( void* pData, int bytes, JobData& rJobDa
                 {
                     rJobData.m_aContext.setParser( rJobData.m_pParser );
                     int nBytes = bytes - aStream.Tell();
-                    char* pRemain = static_cast<char*>(alloca( bytes - aStream.Tell() ));
-                    aStream.Read( pRemain, nBytes );
-                    rJobData.m_aContext.rebuildFromStreamBuffer( pRemain, nBytes );
+                    std::unique_ptr<char[]> pRemain(new char[bytes - aStream.Tell()]);
+                    aStream.Read( pRemain.get(), nBytes );
+                    rJobData.m_aContext.rebuildFromStreamBuffer( pRemain.get(), nBytes );
                     bContext = true;
                 }
             }