vendor: downgrade github.com/valyala/gozstd from v1.8.1 to v1.7.1 until https://github.com/facebook/zstd/issues/2222 is fixed

go.mod

@@ -17,7 +17,9 @@ require (
 	github.com/valyala/fastjson v1.5.4
 	github.com/valyala/fastrand v1.0.0
 	github.com/valyala/fasttemplate v1.2.1
-	github.com/valyala/gozstd v1.8.1
+
+	// Do not upgrade gozstd version until https://github.com/facebook/zstd/issues/2222 is fixed
+	github.com/valyala/gozstd v1.7.1
 	github.com/valyala/histogram v1.1.2
 	github.com/valyala/quicktemplate v1.6.2
 	golang.org/x/net v0.0.0-20200813134508-3edf25e44fcc // indirect

go.sum

@@ -172,8 +172,8 @@ github.com/valyala/fastrand v1.0.0 h1:LUKT9aKer2dVQNUi3waewTbKV+7H17kvWFNKs2Obdk
 github.com/valyala/fastrand v1.0.0/go.mod h1:HWqCzkrkg6QXT8V2EXWvXCoow7vLwOFN002oeRzjapQ=
 github.com/valyala/fasttemplate v1.2.1 h1:TVEnxayobAdVkhQfrfes2IzOB6o+z4roRkPF52WA1u4=
 github.com/valyala/fasttemplate v1.2.1/go.mod h1:KHLXt3tVN2HBp8eijSv/kGJopbvo7S+qRAEEKiv+SiQ=
-github.com/valyala/gozstd v1.8.1 h1:voJLmQRBT5uiTwRfRr//va1TLTiCqtOczKp+TkWYJ+I=
-github.com/valyala/gozstd v1.8.1/go.mod h1:y5Ew47GLlP37EkTB+B4s7r6A5rdaeB7ftbl9zoYiIPQ=
+github.com/valyala/gozstd v1.7.1 h1:2zWgJWU1859UbFoUnheDXnIK35MjPjFmMFhQYFz8brA=
+github.com/valyala/gozstd v1.7.1/go.mod h1:y5Ew47GLlP37EkTB+B4s7r6A5rdaeB7ftbl9zoYiIPQ=
 github.com/valyala/histogram v1.1.2 h1:vOk5VrGjMBIoPR5k6wA8vBaC8toeJ8XO0yfRjFEc1h8=
 github.com/valyala/histogram v1.1.2/go.mod h1:CZAr6gK9dbD7hYx2s8WSPh0p5x5wETjC+2b3PJVtEdg=
 github.com/valyala/quicktemplate v1.6.2 h1:k0vgK7zlmFzqAoIBIOrhrfmZ6JoTGJlLRPLbkPGr2/M=

vendor/github.com/valyala/gozstd/.travis.yml

@@ -6,7 +6,7 @@ os:
   - freebsd
   
 go:
-  - 1.14
+  - 1.12
 
 script:
   # build test for supported platforms

vendor/github.com/valyala/gozstd/zdict.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2020, Yann Collet, Facebook, Inc.
+ * Copyright (c) 2016-present, Yann Collet, Facebook, Inc.
  * All rights reserved.
  *
  * This source code is licensed under both the BSD-style license (found in the
@@ -61,57 +61,9 @@ ZDICTLIB_API size_t ZDICT_trainFromBuffer(void* dictBuffer, size_t dictBufferCap
                                     const void* samplesBuffer,
                                     const size_t* samplesSizes, unsigned nbSamples);
 
-typedef struct {
-    int      compressionLevel;   /*< optimize for a specific zstd compression level; 0 means default */
-    unsigned notificationLevel;  /*< Write log to stderr; 0 = none (default); 1 = errors; 2 = progression; 3 = details; 4 = debug; */
-    unsigned dictID;             /*< force dictID value; 0 means auto mode (32-bits random value) */
-} ZDICT_params_t;
-
-/*! ZDICT_finalizeDictionary():
- * Given a custom content as a basis for dictionary, and a set of samples,
- * finalize dictionary by adding headers and statistics according to the zstd
- * dictionary format.
- *
- * Samples must be stored concatenated in a flat buffer `samplesBuffer`,
- * supplied with an array of sizes `samplesSizes`, providing the size of each
- * sample in order. The samples are used to construct the statistics, so they
- * should be representative of what you will compress with this dictionary.
- *
- * The compression level can be set in `parameters`. You should pass the
- * compression level you expect to use in production. The statistics for each
- * compression level differ, so tuning the dictionary for the compression level
- * can help quite a bit.
- *
- * You can set an explicit dictionary ID in `parameters`, or allow us to pick
- * a random dictionary ID for you, but we can't guarantee no collisions.
- *
- * The dstDictBuffer and the dictContent may overlap, and the content will be
- * appended to the end of the header. If the header + the content doesn't fit in
- * maxDictSize the beginning of the content is truncated to make room, since it
- * is presumed that the most profitable content is at the end of the dictionary,
- * since that is the cheapest to reference.
- *
- * `dictContentSize` must be >= ZDICT_CONTENTSIZE_MIN bytes.
- * `maxDictSize` must be >= max(dictContentSize, ZSTD_DICTSIZE_MIN).
- *
- * @return: size of dictionary stored into `dstDictBuffer` (<= `maxDictSize`),
- *          or an error code, which can be tested by ZDICT_isError().
- * Note: ZDICT_finalizeDictionary() will push notifications into stderr if
- *       instructed to, using notificationLevel>0.
- * NOTE: This function currently may fail in several edge cases including:
- *         * Not enough samples
- *         * Samples are uncompressible
- *         * Samples are all exactly the same
- */
-ZDICTLIB_API size_t ZDICT_finalizeDictionary(void* dstDictBuffer, size_t maxDictSize,
-                                const void* dictContent, size_t dictContentSize,
-                                const void* samplesBuffer, const size_t* samplesSizes, unsigned nbSamples,
-                                ZDICT_params_t parameters);
-
 
 /*======   Helper functions   ======*/
 ZDICTLIB_API unsigned ZDICT_getDictID(const void* dictBuffer, size_t dictSize);  /**< extracts dictID; @return zero if error (not a valid dictionary) */
-ZDICTLIB_API size_t ZDICT_getDictHeaderSize(const void* dictBuffer, size_t dictSize);  /* returns dict header size; returns a ZSTD error code on failure */
 ZDICTLIB_API unsigned ZDICT_isError(size_t errorCode);
 ZDICTLIB_API const char* ZDICT_getErrorName(size_t errorCode);
 
@@ -126,8 +78,11 @@ ZDICTLIB_API const char* ZDICT_getErrorName(size_t errorCode);
  * Use them only in association with static linking.
  * ==================================================================================== */
 
-#define ZDICT_CONTENTSIZE_MIN 128
-#define ZDICT_DICTSIZE_MIN    256
+typedef struct {
+    int      compressionLevel;   /* optimize for a specific zstd compression level; 0 means default */
+    unsigned notificationLevel;  /* Write log to stderr; 0 = none (default); 1 = errors; 2 = progression; 3 = details; 4 = debug; */
+    unsigned dictID;             /* force dictID value; 0 means auto mode (32-bits random value) */
+} ZDICT_params_t;
 
 /*! ZDICT_cover_params_t:
  *  k and d are the only required parameters.
@@ -243,6 +198,28 @@ ZDICTLIB_API size_t ZDICT_optimizeTrainFromBuffer_fastCover(void* dictBuffer,
                     const size_t* samplesSizes, unsigned nbSamples,
                     ZDICT_fastCover_params_t* parameters);
 
+/*! ZDICT_finalizeDictionary():
+ * Given a custom content as a basis for dictionary, and a set of samples,
+ * finalize dictionary by adding headers and statistics.
+ *
+ * Samples must be stored concatenated in a flat buffer `samplesBuffer`,
+ * supplied with an array of sizes `samplesSizes`, providing the size of each sample in order.
+ *
+ * dictContentSize must be >= ZDICT_CONTENTSIZE_MIN bytes.
+ * maxDictSize must be >= dictContentSize, and must be >= ZDICT_DICTSIZE_MIN bytes.
+ *
+ * @return: size of dictionary stored into `dictBuffer` (<= `dictBufferCapacity`),
+ *          or an error code, which can be tested by ZDICT_isError().
+ * Note: ZDICT_finalizeDictionary() will push notifications into stderr if instructed to, using notificationLevel>0.
+ * Note 2: dictBuffer and dictContent can overlap
+ */
+#define ZDICT_CONTENTSIZE_MIN 128
+#define ZDICT_DICTSIZE_MIN    256
+ZDICTLIB_API size_t ZDICT_finalizeDictionary(void* dictBuffer, size_t dictBufferCapacity,
+                                const void* dictContent, size_t dictContentSize,
+                                const void* samplesBuffer, const size_t* samplesSizes, unsigned nbSamples,
+                                ZDICT_params_t parameters);
+
 typedef struct {
     unsigned selectivityLevel;   /* 0 means default; larger => select more => larger dictionary */
     ZDICT_params_t zParams;

vendor/github.com/valyala/gozstd/zstd.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2020, Yann Collet, Facebook, Inc.
+ * Copyright (c) 2016-present, Yann Collet, Facebook, Inc.
  * All rights reserved.
  *
  * This source code is licensed under both the BSD-style license (found in the
@@ -72,7 +72,7 @@ extern "C" {
 /*------   Version   ------*/
 #define ZSTD_VERSION_MAJOR    1
 #define ZSTD_VERSION_MINOR    4
-#define ZSTD_VERSION_RELEASE  5
+#define ZSTD_VERSION_RELEASE  4
 
 #define ZSTD_VERSION_NUMBER  (ZSTD_VERSION_MAJOR *100*100 + ZSTD_VERSION_MINOR *100 + ZSTD_VERSION_RELEASE)
 ZSTDLIB_API unsigned ZSTD_versionNumber(void);   /**< to check runtime library version */
@@ -274,10 +274,7 @@ typedef enum {
                               * Default level is ZSTD_CLEVEL_DEFAULT==3.
                               * Special: value 0 means default, which is controlled by ZSTD_CLEVEL_DEFAULT.
                               * Note 1 : it's possible to pass a negative compression level.
-                              * Note 2 : setting a level does not automatically set all other compression parameters
-                              *   to default. Setting this will however eventually dynamically impact the compression
-                              *   parameters which have not been manually set. The manually set
-                              *   ones will 'stick'. */
+                              * Note 2 : setting a level resets all other compression parameters to default */
     /* Advanced compression parameters :
      * It's possible to pin down compression parameters to some specific values.
      * In which case, these values are no longer dynamically selected by the compressor */
@@ -522,13 +519,11 @@ typedef enum {
     /* note : additional experimental parameters are also available
      * within the experimental section of the API.
      * At the time of this writing, they include :
-     * ZSTD_d_format
-     * ZSTD_d_stableOutBuffer
+     * ZSTD_c_format
      * Because they are not stable, it's necessary to define ZSTD_STATIC_LINKING_ONLY to access them.
      * note : never ever use experimentalParam? names directly
      */
-     ZSTD_d_experimentalParam1=1000,
-     ZSTD_d_experimentalParam2=1001
+     ZSTD_d_experimentalParam1=1000
 
 } ZSTD_dParameter;
 
@@ -768,7 +763,7 @@ ZSTDLIB_API size_t ZSTD_freeDStream(ZSTD_DStream* zds);
 
 /* This function is redundant with the advanced API and equivalent to:
  *
- *     ZSTD_DCtx_reset(zds, ZSTD_reset_session_only);
+ *     ZSTD_DCtx_reset(zds);
  *     ZSTD_DCtx_refDDict(zds, NULL);
  */
 ZSTDLIB_API size_t ZSTD_initDStream(ZSTD_DStream* zds);
@@ -1268,28 +1263,23 @@ ZSTDLIB_API size_t ZSTD_getSequences(ZSTD_CCtx* zc, ZSTD_Sequence* outSeqs,
 ***************************************/
 
 /*! ZSTD_estimate*() :
- *  These functions make it possible to estimate memory usage
- *  of a future {D,C}Ctx, before its creation.
+ *  These functions make it possible to estimate memory usage of a future
+ *  {D,C}Ctx, before its creation.
  *
- *  ZSTD_estimateCCtxSize() will provide a memory budget large enough
- *  for any compression level up to selected one.
- *  Note : Unlike ZSTD_estimateCStreamSize*(), this estimate
- *         does not include space for a window buffer.
- *         Therefore, the estimation is only guaranteed for single-shot compressions, not streaming.
- *  The estimate will assume the input may be arbitrarily large,
- *  which is the worst case.
+ *  ZSTD_estimateCCtxSize() will provide a budget large enough for any
+ *  compression level up to selected one. Unlike ZSTD_estimateCStreamSize*(),
+ *  this estimate does not include space for a window buffer, so this estimate
+ *  is guaranteed to be enough for single-shot compressions, but not streaming
+ *  compressions. It will however assume the input may be arbitrarily large,
+ *  which is the worst case. If srcSize is known to always be small,
+ *  ZSTD_estimateCCtxSize_usingCParams() can provide a tighter estimation.
+ *  ZSTD_estimateCCtxSize_usingCParams() can be used in tandem with
+ *  ZSTD_getCParams() to create cParams from compressionLevel.
+ *  ZSTD_estimateCCtxSize_usingCCtxParams() can be used in tandem with
+ *  ZSTD_CCtxParams_setParameter().
  *
- *  When srcSize can be bound by a known and rather "small" value,
- *  this fact can be used to provide a tighter estimation
- *  because the CCtx compression context will need less memory.
- *  This tighter estimation can be provided by more advanced functions
- *  ZSTD_estimateCCtxSize_usingCParams(), which can be used in tandem with ZSTD_getCParams(),
- *  and ZSTD_estimateCCtxSize_usingCCtxParams(), which can be used in tandem with ZSTD_CCtxParams_setParameter().
- *  Both can be used to estimate memory using custom compression parameters and arbitrary srcSize limits.
- *
- *  Note 2 : only single-threaded compression is supported.
- *  ZSTD_estimateCCtxSize_usingCCtxParams() will return an error code if ZSTD_c_nbWorkers is >= 1.
- */
+ *  Note: only single-threaded compression is supported. This function will
+ *  return an error code if ZSTD_c_nbWorkers is >= 1. */
 ZSTDLIB_API size_t ZSTD_estimateCCtxSize(int compressionLevel);
 ZSTDLIB_API size_t ZSTD_estimateCCtxSize_usingCParams(ZSTD_compressionParameters cParams);
 ZSTDLIB_API size_t ZSTD_estimateCCtxSize_usingCCtxParams(const ZSTD_CCtx_params* params);
@@ -1652,37 +1642,6 @@ ZSTDLIB_API size_t ZSTD_DCtx_setMaxWindowSize(ZSTD_DCtx* dctx, size_t maxWindowS
  * allowing selection between ZSTD_format_e input compression formats
  */
 #define ZSTD_d_format ZSTD_d_experimentalParam1
-/* ZSTD_d_stableOutBuffer
- * Experimental parameter.
- * Default is 0 == disabled. Set to 1 to enable.
- *
- * Tells the decompressor that the ZSTD_outBuffer will ALWAYS be the same
- * between calls, except for the modifications that zstd makes to pos (the
- * caller must not modify pos). This is checked by the decompressor, and
- * decompression will fail if it ever changes. Therefore the ZSTD_outBuffer
- * MUST be large enough to fit the entire decompressed frame. This will be
- * checked when the frame content size is known. The data in the ZSTD_outBuffer
- * in the range [dst, dst + pos) MUST not be modified during decompression
- * or you will get data corruption.
- *
- * When this flags is enabled zstd won't allocate an output buffer, because
- * it can write directly to the ZSTD_outBuffer, but it will still allocate
- * an input buffer large enough to fit any compressed block. This will also
- * avoid the memcpy() from the internal output buffer to the ZSTD_outBuffer.
- * If you need to avoid the input buffer allocation use the buffer-less
- * streaming API.
- *
- * NOTE: So long as the ZSTD_outBuffer always points to valid memory, using
- * this flag is ALWAYS memory safe, and will never access out-of-bounds
- * memory. However, decompression WILL fail if you violate the preconditions.
- *
- * WARNING: The data in the ZSTD_outBuffer in the range [dst, dst + pos) MUST
- * not be modified during decompression or you will get data corruption. This
- * is because zstd needs to reference data in the ZSTD_outBuffer to regenerate
- * matches. Normally zstd maintains its own buffer for this purpose, but passing
- * this flag tells zstd to use the user provided buffer.
- */
-#define ZSTD_d_stableOutBuffer ZSTD_d_experimentalParam2
 
 /*! ZSTD_DCtx_setFormat() :
  *  Instruct the decoder context about what kind of data to decode next.

vendor/github.com/valyala/gozstd/zstd_errors.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2020, Yann Collet, Facebook, Inc.
+ * Copyright (c) 2016-present, Yann Collet, Facebook, Inc.
  * All rights reserved.
  *
  * This source code is licensed under both the BSD-style license (found in the
@@ -76,7 +76,6 @@ typedef enum {
   /* following error codes are __NOT STABLE__, they can be removed or changed in future versions */
   ZSTD_error_frameIndex_tooLarge = 100,
   ZSTD_error_seekableIO          = 102,
-  ZSTD_error_dstBuffer_wrong     = 104,
   ZSTD_error_maxCode = 120  /* never EVER use this value directly, it can change in future versions! Use ZSTD_isError() instead */
 } ZSTD_ErrorCode;
 

vendor/modules.txt

@@ -106,7 +106,7 @@ github.com/valyala/fastjson/fastfloat
 github.com/valyala/fastrand
 # github.com/valyala/fasttemplate v1.2.1
 github.com/valyala/fasttemplate
-# github.com/valyala/gozstd v1.8.1
+# github.com/valyala/gozstd v1.7.1
 github.com/valyala/gozstd
 # github.com/valyala/histogram v1.1.2
 github.com/valyala/histogram