denuvo-ref/precomp-cpp
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Change order of allocation and image descriptor check in GIF code

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- Fixes #100
- Improves speed when processing invalid GIF files or false positives
This commit is contained in:
Christian Schneider 2019-05-15 07:59:05 +02:00
parent 7ebe71c421
commit 90f2353425
1 changed files with 4 additions and 4 deletions
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8
precomp.cpp
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@ -6212,6 +6212,10 @@ bool decompress_gif(FILE* srcfile, FILE* dstfile, long long src_pos, int& gif_le
switch (RecordType) {
case IMAGE_DESC_RECORD_TYPE:
if (DGifGetImageDesc(myGifFile) == GIF_ERROR) {
return d_gif_error(ScreenBuff, myGifFile);
}
if (ScreenBuff == NULL) {
ScreenBuff = alloc_gif_screenbuf(myGifFile);
if (!ScreenBuff) {
@ -6220,10 +6224,6 @@ bool decompress_gif(FILE* srcfile, FILE* dstfile, long long src_pos, int& gif_le
}
}
if (DGifGetImageDesc(myGifFile) == GIF_ERROR) {
return d_gif_error(ScreenBuff, myGifFile);
}
srcfile_pos = tell_64(srcfile);
if (last_pos != srcfile_pos) {
if (last_pos == -1) {