Fixed some sprintf warnings

libs_required/ACG/GL/ShaderCache.cc

@@ -156,8 +156,7 @@ GLSL::Program* ACG::ShaderCache::getProgram( const ShaderGenDesc* _desc, const s
   {
     static int counter = 0;
 
-    QString fileName;
-    fileName.sprintf("shader_%02d.glsl", counter++);
+    QString fileName = QString("shader_%1.glsl").arg(counter++,2,10,QLatin1Char('0')) ;
     fileName = dbgOutputDir_ + QDir::separator() + fileName;
 
     QFile fileOut(fileName);
@@ -517,8 +516,7 @@ GLSL::Program* ACG::ShaderCache::getComputeProgram(const char* _computeShaderFil
           }
         }
 
-        QString fnv_string;
-        fnv_string.sprintf("%X", fnv_hash);
+        QString fnv_string = QString::number(fnv_hash,16).toUpper();
 
         std::string dumpFilename = QString(dbgOutputDir_ + QDir::separator() + fileInfo.fileName() + fnv_string).toStdString();