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Merge "Fix segmentation fault with certain files."

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am: 56b320c00e

* commit '56b320c00e8f86732ca2927f9b4f1363e306caa8':
  Fix segmentation fault with certain files.

Change-Id: Ifee04a04b1d04d2942b69c5235babff374b47164
This commit is contained in:
Sen Jiang authored and android-build-merger committed 2016-05-07 00:46:20 +00:00
2 parents 00c36ff742 56b320c00e
commit a07149c664
1 file changed
+6 -1
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@@ -62,6 +62,11 @@ static off_t matchlen(const u_char* old, off_t oldsize, const u_char* new_buf,
return i;
}
// This is a binary search of the string |new_buf| of size |newsize| (or a
// prefix of it) in the |old| string with size |oldsize| using the suffix array
// |I|. |st| and |en| is the start and end of the search range (inclusive).
// Returns the length of the longest prefix found and stores the position of the
// string found in |*pos|.
static off_t search(saidx_t* I, const u_char* old, off_t oldsize,
const u_char* new_buf, off_t newsize, off_t st, off_t en,
off_t* pos) {
@@ -206,7 +211,7 @@ int bsdiff(const u_char* old_buf, off_t oldsize, const u_char* new_buf,
prev_pos=pos;
len=search(I,old_buf,oldsize,new_buf+scan,newsize-scan,
0,oldsize,&pos);
0,oldsize-1,&pos);
for(;scsc<scan+len;scsc++)
if((scsc+lastoffset<oldsize) &&