[Minor] Update bundled zstd to version 1.3

1 files changed, 26 insertions, 24 deletions

diff --git a/contrib/zstd/fse_decompress.c b/contrib/zstd/fse_decompress.c
index 032e65771..8474a4c07 100644
--- a/contrib/zstd/fse_decompress.c
+++ b/contrib/zstd/fse_decompress.c
@@ -42,12 +42,15 @@
 #  pragma warning(disable : 4127)        /* disable: C4127: conditional expression is constant */
 #  pragma warning(disable : 4214)        /* disable: C4214: non-int bitfields */
 #else
-#  ifdef __GNUC__
-#    define GCC_VERSION (__GNUC__ * 100 + __GNUC_MINOR__)
-#    define FORCE_INLINE static inline __attribute__((always_inline))
+#  if defined (__cplusplus) || defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L   /* C99 */
+#    ifdef __GNUC__
+#      define FORCE_INLINE static inline __attribute__((always_inline))
+#    else
+#      define FORCE_INLINE static inline
+#    endif
 #  else
-#    define FORCE_INLINE static inline
-#  endif
+#    define FORCE_INLINE static
+#  endif /* __STDC_VERSION__ */
 #endif
 
 
@@ -56,7 +59,6 @@
 ****************************************************************/
 #include <stdlib.h>     /* malloc, free, qsort */
 #include <string.h>     /* memcpy, memset */
-#include <stdio.h>      /* printf (debug) */
 #include "bitstream.h"
 #define FSE_STATIC_LINKING_ONLY
 #include "fse.h"
@@ -73,12 +75,6 @@
 
 
 /* **************************************************************
-*  Complex types
-****************************************************************/
-typedef U32 DTable_max_t[FSE_DTABLE_SIZE_U32(FSE_MAX_TABLELOG)];
-
-
-/* **************************************************************
 *  Templates
 ****************************************************************/
 /*
@@ -297,28 +293,34 @@ size_t FSE_decompress_usingDTable(void* dst, size_t originalSize,
 }
 
 
-size_t FSE_decompress(void* dst, size_t maxDstSize, const void* cSrc, size_t cSrcSize)
+size_t FSE_decompress_wksp(void* dst, size_t dstCapacity, const void* cSrc, size_t cSrcSize, FSE_DTable* workSpace, unsigned maxLog)
 {
     const BYTE* const istart = (const BYTE*)cSrc;
     const BYTE* ip = istart;
     short counting[FSE_MAX_SYMBOL_VALUE+1];
-    DTable_max_t dt;   /* Static analyzer seems unable to understand this table will be properly initialized later */
     unsigned tableLog;
     unsigned maxSymbolValue = FSE_MAX_SYMBOL_VALUE;
 
-    if (cSrcSize<2) return ERROR(srcSize_wrong);   /* too small input size */
-
     /* normal FSE decoding mode */
-    {   size_t const NCountLength = FSE_readNCount (counting, &maxSymbolValue, &tableLog, istart, cSrcSize);
-        if (FSE_isError(NCountLength)) return NCountLength;
-        if (NCountLength >= cSrcSize) return ERROR(srcSize_wrong);   /* too small input size */
-        ip += NCountLength;
-        cSrcSize -= NCountLength;
-    }
+    size_t const NCountLength = FSE_readNCount (counting, &maxSymbolValue, &tableLog, istart, cSrcSize);
+    if (FSE_isError(NCountLength)) return NCountLength;
+    //if (NCountLength >= cSrcSize) return ERROR(srcSize_wrong);   /* too small input size; supposed to be already checked in NCountLength, only remaining case : NCountLength==cSrcSize */
+    if (tableLog > maxLog) return ERROR(tableLog_tooLarge);
+    ip += NCountLength;
+    cSrcSize -= NCountLength;
 
-    CHECK_F( FSE_buildDTable (dt, counting, maxSymbolValue, tableLog) );
+    CHECK_F( FSE_buildDTable (workSpace, counting, maxSymbolValue, tableLog) );
 
-    return FSE_decompress_usingDTable (dst, maxDstSize, ip, cSrcSize, dt);   /* always return, even if it is an error code */
+    return FSE_decompress_usingDTable (dst, dstCapacity, ip, cSrcSize, workSpace);   /* always return, even if it is an error code */
+}
+
+
+typedef FSE_DTable DTable_max_t[FSE_DTABLE_SIZE_U32(FSE_MAX_TABLELOG)];
+
+size_t FSE_decompress(void* dst, size_t dstCapacity, const void* cSrc, size_t cSrcSize)
+{
+    DTable_max_t dt;   /* Static analyzer seems unable to understand this table will be properly initialized later */
+    return FSE_decompress_wksp(dst, dstCapacity, cSrc, cSrcSize, dt, FSE_MAX_TABLELOG);
 }