commit f8105c665856863ad95da37fee6c12b98b953e2c
author Lei Zhang <thestig@chromium.org> Fri Jan 09 15:33:19 2015 -0800
committer Lei Zhang <thestig@chromium.org> Fri Jan 09 15:33:19 2015 -0800
tree 02ed166abddbec772678c1cb66795f2f44bae935
parent 5621dc444be3d2a5f7c6198b1e14695118a346a5

Check for NULL pointers in CJBig2_SymbolDict::DeepCopy().

BUG=445475
R=tsepez@chromium.org

Review URL: https://codereview.chromium.org/837093002

core/src/fxcodec/jbig2/JBig2_SymbolDict.cpp

diff --git a/core/src/fxcodec/jbig2/JBig2_SymbolDict.cpp b/core/src/fxcodec/jbig2/JBig2_SymbolDict.cpp
index bad2fc4..e9bb9c6 100644
--- a/core/src/fxcodec/jbig2/JBig2_SymbolDict.cpp
+++ b/core/src/fxcodec/jbig2/JBig2_SymbolDict.cpp
@@ -27,8 +27,12 @@
     dst->SDEXSYMS = (CJBig2_Image**)m_pModule->JBig2_Malloc2(
         sizeof(CJBig2_Image*), src->SDNUMEXSYMS);
     for(FX_DWORD i = 0; i < src->SDNUMEXSYMS; i++) {
-        JBIG2_ALLOC(dst->SDEXSYMS[i],
-                    CJBig2_Image(*(src->SDEXSYMS[i])));
+        if (src->SDEXSYMS[i]) {
+            JBIG2_ALLOC(dst->SDEXSYMS[i],
+                        CJBig2_Image(*(src->SDEXSYMS[i])));
+        } else {
+            dst->SDEXSYMS[i] = NULL;
+        }
     }
     return dst;
 }