From: Nick Terrell <terrelln@fb.com>
Date: Mon, 26 Feb 2018 21:30:24 +0000 (-0800)
Subject: Reduce ZSTD_CHAINLOG_MAX to 29 in 32-bit mode
X-Git-Tag: v1.3.4~1^2~47^2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6b88d592fd4eb855a80517f2d1c185b5905cc92b;p=thirdparty%2Fzstd.git

Reduce ZSTD_CHAINLOG_MAX to 29 in 32-bit mode
---

diff --git a/lib/zstd.h b/lib/zstd.h
index 986b81980..deedd3643 100644
--- a/lib/zstd.h
+++ b/lib/zstd.h
@@ -381,7 +381,9 @@ ZSTDLIB_API size_t ZSTD_DStreamOutSize(void);   /*!< recommended size for output
 #define ZSTD_WINDOWLOG_MIN      10
 #define ZSTD_HASHLOG_MAX      ((ZSTD_WINDOWLOG_MAX < 30) ? ZSTD_WINDOWLOG_MAX : 30)
 #define ZSTD_HASHLOG_MIN         6
-#define ZSTD_CHAINLOG_MAX     ((ZSTD_WINDOWLOG_MAX < 29) ? ZSTD_WINDOWLOG_MAX+1 : 30)
+#define ZSTD_CHAINLOG_MAX_32    29
+#define ZSTD_CHAINLOG_MAX_64    30
+#define ZSTD_CHAINLOG_MAX     ((unsigned)(sizeof(size_t) == 4 ? ZSTD_CHAINLOG_MAX_32 : ZSTD_CHAINLOG_MAX_64))
 #define ZSTD_CHAINLOG_MIN       ZSTD_HASHLOG_MIN
 #define ZSTD_HASHLOG3_MAX       17
 #define ZSTD_SEARCHLOG_MAX     (ZSTD_WINDOWLOG_MAX-1)