Bug 536911: fix null dereference topcash r=alfredkayser

2009-12-31 10:10:20 -08:00
parent 9bab6f1849
commit c7a2bc8794
3 changed files with 71 additions and 0 deletions
--- a/modules/libjar/nsJARInputStream.cpp
+++ b/modules/libjar/nsJARInputStream.cpp
@@ -89,6 +89,8 @@ nsJARInputStream::InitFile(nsJAR *aJar, nsZipItem *item)
    // Must keep handle to filepointer and mmap structure as long as we need access to the mmapped data
    mFd = aJar->mZip.GetFD();
    mZs.next_in = aJar->mZip.GetData(item);
+    if (!mZs.next_in)
+        return NS_ERROR_FILE_CORRUPTED;
    mZs.avail_in = item->Size();
    mOutSize = item->RealSize();
    mZs.total_out = 0;