commit 788e520a69fb8698caa8199098e78ecf76c614ed
author David Bainbridge <dbainbri@ciena.com> Mon Oct 21 18:49:40 2019 +0000
committer David Bainbridge <dbainbri@ciena.com> Mon Oct 21 18:50:14 2019 +0000
tree 56ec056cb3ea27ddd1ae7ab96b6edbd24f613490
parent f8424cc36bf53d69a51974dd7f83d86f055ab9e4

VOL-1921 - updated to use go mod

Change-Id: I8d5187fa91fa619494f972bc29d3bd61e5be3a82

vendor/github.com/DataDog/zstd/zstd_v04.c

diff --git a/vendor/github.com/DataDog/zstd/zstd_v04.c b/vendor/github.com/DataDog/zstd/zstd_v04.c
index 4342330..645a6e3 100644
--- a/vendor/github.com/DataDog/zstd/zstd_v04.c
+++ b/vendor/github.com/DataDog/zstd/zstd_v04.c
@@ -189,6 +189,11 @@
     }
 }
 
+MEM_STATIC U32 MEM_readLE24(const void* memPtr)
+{
+    return MEM_readLE16(memPtr) + (((const BYTE*)memPtr)[2] << 16);
+}
+
 MEM_STATIC U32 MEM_readLE32(const void* memPtr)
 {
     if (MEM_isLittleEndian())
@@ -2808,13 +2813,12 @@
     litLength = FSE_decodeSymbol(&(seqState->stateLL), &(seqState->DStream));
     prevOffset = litLength ? seq->offset : seqState->prevOffset;
     if (litLength == MaxLL) {
-        U32 add = *dumps++;
+        const U32 add = dumps<de ? *dumps++ : 0;
         if (add < 255) litLength += add;
-        else {
-            litLength = dumps[0] + (dumps[1]<<8) + (dumps[2]<<16);
+        else if (dumps + 3 <= de) {
+            litLength = MEM_readLE24(dumps);
             dumps += 3;
         }
-        if (dumps > de) { litLength = MaxLL+255; }  /* late correction, to avoid using uninitialized memory */
         if (dumps >= de) { dumps = de-1; }  /* late correction, to avoid read overflow (data is now corrupted anyway) */
     }
 
@@ -2837,13 +2841,12 @@
     /* MatchLength */
     matchLength = FSE_decodeSymbol(&(seqState->stateML), &(seqState->DStream));
     if (matchLength == MaxML) {
-        U32 add = *dumps++;
+        const U32 add = dumps<de ? *dumps++ : 0;
         if (add < 255) matchLength += add;
-        else {
-            matchLength = dumps[0] + (dumps[1]<<8) + (dumps[2]<<16);
+        else if (dumps + 3 <= de){
+            matchLength = MEM_readLE24(dumps);
             dumps += 3;
         }
-        if (dumps > de) { matchLength = MaxML+255; }  /* late correction, to avoid using uninitialized memory */
         if (dumps >= de) { dumps = de-1; }  /* late correction, to avoid read overflow (data is now corrupted anyway) */
     }
     matchLength += MINMATCH;