[Libreoffice-commits] core.git: vcl/source

[Caolán McNamara (via logerrit)]

 vcl/source/filter/igif/gifread.cxx |    8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

New commits:
commit 8351081be79d0b9d61aae2a6eb328a11e2393c92
Author:     Caolán McNamara <caolanm at redhat.com>
AuthorDate: Mon Aug 23 20:15:16 2021 +0100
Commit:     Caolán McNamara <caolanm at redhat.com>
CommitDate: Tue Aug 24 09:35:19 2021 +0200

    ofz: MemorySanitizer: use-of-uninitialized-value
    
    Change-Id: Iaecbdaa7a7ad61f8c657b0aa04fd30ee27699b72
    Reviewed-on: https://gerrit.libreoffice.org/c/core/+/120924
    Tested-by: Jenkins
    Reviewed-by: Caolán McNamara <caolanm at redhat.com>

diff --git a/vcl/source/filter/igif/gifread.cxx b/vcl/source/filter/igif/gifread.cxx
index 595e5cf18183..fa1270e6a135 100644
--- a/vcl/source/filter/igif/gifread.cxx
+++ b/vcl/source/filter/igif/gifread.cxx
@@ -256,14 +256,14 @@ bool GIFReader::ReadGlobalHeader()
     char    pBuf[ 7 ];
     bool    bRet = false;
 
-    rIStm.ReadBytes( pBuf, 6 );
-    if( NO_PENDING( rIStm ) )
+    auto nRead = rIStm.ReadBytes(pBuf, 6);
+    if (nRead == 6 && NO_PENDING(rIStm))
     {
         pBuf[ 6 ] = 0;
         if( !strcmp( pBuf, "GIF87a" ) || !strcmp( pBuf, "GIF89a" ) )
         {
-            rIStm.ReadBytes( pBuf, 7 );
-            if( NO_PENDING( rIStm ) )
+            nRead = rIStm.ReadBytes(pBuf, 7);
+            if (nRead == 7 && NO_PENDING(rIStm))
             {
                 sal_uInt8   nAspect;
                 sal_uInt8   nRF;