fixed memory violation in preparePage()

diff --git a/lib/pdf/GFXOutputDev.cc b/lib/pdf/GFXOutputDev.cc
index f2074b8..16e5e91 100644 (file)
--- a/lib/pdf/GFXOutputDev.cc
+++ b/lib/pdf/GFXOutputDev.cc
@@ -2571,17 +2571,20 @@ void GFXOutputDev::preparePage(int pdfpage, int outputpage)
 
     if(!this->pages) {
        this->pagebuflen = 1024;
+       if(pdfpage > this->pagebuflen)
+           this->pagebuflen = pdfpage+1;
        this->pages = (int*)malloc(this->pagebuflen*sizeof(int));
        memset(this->pages, -1, this->pagebuflen*sizeof(int));
-    } else {
-       while(pdfpage >= this->pagebuflen)
-       {
-           int oldlen = this->pagebuflen;
-           this->pagebuflen+=1024;
-           this->pages = (int*)realloc(this->pages, this->pagebuflen*sizeof(int));
-           memset(&this->pages[oldlen], -1, (this->pagebuflen-oldlen)*sizeof(int));
-       }
     }
+
+    while(pdfpage >= this->pagebuflen)
+    {
+       int oldlen = this->pagebuflen;
+       this->pagebuflen+=1024;
+       this->pages = (int*)realloc(this->pages, this->pagebuflen*sizeof(int));
+       memset(&this->pages[oldlen], -1, (this->pagebuflen-oldlen)*sizeof(int));
+    }
+
     this->pages[pdfpage] = outputpage;
     if(pdfpage>this->pagepos)
        this->pagepos = pdfpage;