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authorJun Fang <jun_fang@foxitsoftware.com>2014-08-04 19:25:14 -0700
committerJun Fang <jun_fang@foxitsoftware.com>2014-08-04 19:25:14 -0700
commit06a8c8737b731d601af11cd9d61308c097cacc5f (patch)
tree0c554fa6c095136580f81d99883fc6bd7e1404fb /core/src
parent7b99cd3306b669c120d8a581dadd9e480ba420fd (diff)
downloadpdfium-06a8c8737b731d601af11cd9d61308c097cacc5f.tar.xz
Fix unninitialized 'tmp' in CJBig2_Image::composeTo_opt2
BUG=387811 R=tsepez@chromium.org Review URL: https://codereview.chromium.org/437483004
Diffstat (limited to 'core/src')
-rw-r--r--core/src/fxcodec/jbig2/JBig2_Image.cpp25
1 files changed, 11 insertions, 14 deletions
diff --git a/core/src/fxcodec/jbig2/JBig2_Image.cpp b/core/src/fxcodec/jbig2/JBig2_Image.cpp
index 09353c0e81..5da1fc63d0 100644
--- a/core/src/fxcodec/jbig2/JBig2_Image.cpp
+++ b/core/src/fxcodec/jbig2/JBig2_Image.cpp
@@ -776,9 +776,14 @@ void CJBig2_Image::expand(FX_INT32 h, FX_BOOL v)
}
FX_BOOL CJBig2_Image::composeTo_opt2(CJBig2_Image *pDst, FX_INT32 x, FX_INT32 y, JBig2ComposeOp op)
{
- FX_INT32 xs0, ys0, xs1, ys1, xd0, yd0, xd1, yd1, xx, yy, w, h, middleDwords, lineLeft;
- FX_DWORD s1, d1, d2, shift, shift1, shift2, tmp, tmp1, tmp2, maskL, maskR, maskM;
- FX_BYTE *lineSrc, *lineDst, *sp, *dp;
+ FX_INT32 xs0 = 0, ys0 = 0, xs1 = 0, ys1 = 0, xd0 = 0, yd0 = 0, xd1 = 0,
+ yd1 = 0, xx = 0, yy = 0, w = 0, h = 0, middleDwords = 0, lineLeft = 0;
+
+ FX_DWORD s1 = 0, d1 = 0, d2 = 0, shift = 0, shift1 = 0, shift2 = 0,
+ tmp = 0, tmp1 = 0, tmp2 = 0, maskL = 0, maskR = 0, maskM = 0;
+
+ FX_BYTE *lineSrc = NULL, *lineDst = NULL, *sp = NULL, *dp = NULL;
+
if (!m_pData) {
return FALSE;
}
@@ -787,8 +792,6 @@ FX_BOOL CJBig2_Image::composeTo_opt2(CJBig2_Image *pDst, FX_INT32 x, FX_INT32 y,
}
if(y < 0) {
ys0 = -y;
- } else {
- ys0 = 0;
}
if(y + m_nHeight > pDst->m_nHeight) {
ys1 = pDst->m_nHeight - y;
@@ -797,8 +800,6 @@ FX_BOOL CJBig2_Image::composeTo_opt2(CJBig2_Image *pDst, FX_INT32 x, FX_INT32 y,
}
if(x < 0) {
xs0 = -x;
- } else {
- xs0 = 0;
}
if(x + m_nWidth > pDst->m_nWidth) {
xs1 = pDst->m_nWidth - x;
@@ -810,14 +811,10 @@ FX_BOOL CJBig2_Image::composeTo_opt2(CJBig2_Image *pDst, FX_INT32 x, FX_INT32 y,
}
w = xs1 - xs0;
h = ys1 - ys0;
- if(y < 0) {
- yd0 = 0;
- } else {
+ if(y >= 0) {
yd0 = y;
- }
- if(x < 0) {
- xd0 = 0;
- } else {
+ }
+ if(x >= 0) {
xd0 = x;
}
xd1 = xd0 + w;