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Merge pull request #981 from facebook/fix976 

fixed bug #976, reported by @indygreg
dev
Yann Collet 2018-01-11 11:40:07 -08:00 committed by GitHub
parent 55cdbdb465 2103a62b3d
commit 1d623e60a1
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 12 additions and 5 deletions
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4
lib/zstd.h
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@ -379,9 +379,9 @@ ZSTDLIB_API size_t ZSTD_DStreamOutSize(void); /*!< recommended size for output
#define ZSTD_WINDOWLOG_MAX_64 31 #define ZSTD_WINDOWLOG_MAX_64 31
#define ZSTD_WINDOWLOG_MAX ((unsigned)(sizeof(size_t) == 4 ? ZSTD_WINDOWLOG_MAX_32 : ZSTD_WINDOWLOG_MAX_64)) #define ZSTD_WINDOWLOG_MAX ((unsigned)(sizeof(size_t) == 4 ? ZSTD_WINDOWLOG_MAX_32 : ZSTD_WINDOWLOG_MAX_64))
#define ZSTD_WINDOWLOG_MIN 10 #define ZSTD_WINDOWLOG_MIN 10
#define ZSTD_HASHLOG_MAX MIN(ZSTD_WINDOWLOG_MAX, 30) #define ZSTD_HASHLOG_MAX ((ZSTD_WINDOWLOG_MAX < 30) ? ZSTD_WINDOWLOG_MAX : 30)
#define ZSTD_HASHLOG_MIN 6 #define ZSTD_HASHLOG_MIN 6
#define ZSTD_CHAINLOG_MAX MIN(ZSTD_WINDOWLOG_MAX+1, 30) #define ZSTD_CHAINLOG_MAX ((ZSTD_WINDOWLOG_MAX < 29) ? ZSTD_WINDOWLOG_MAX+1 : 30)
#define ZSTD_CHAINLOG_MIN ZSTD_HASHLOG_MIN #define ZSTD_CHAINLOG_MIN ZSTD_HASHLOG_MIN
#define ZSTD_HASHLOG3_MAX 17 #define ZSTD_HASHLOG3_MAX 17
#define ZSTD_SEARCHLOG_MAX (ZSTD_WINDOWLOG_MAX-1) #define ZSTD_SEARCHLOG_MAX (ZSTD_WINDOWLOG_MAX-1)

13
tests/fuzzer.c
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@ -65,11 +65,18 @@ static UTIL_time_t g_displayClock = UTIL_TIME_INITIALIZER;
{ g_displayClock = UTIL_getTime(); DISPLAY(__VA_ARGS__); \ { g_displayClock = UTIL_getTime(); DISPLAY(__VA_ARGS__); \
if (g_displayLevel>=4) fflush(stderr); } } if (g_displayLevel>=4) fflush(stderr); } }
/*-*******************************************************
* Fuzzer functions
*********************************************************/
#undef MIN #undef MIN
#undef MAX #undef MAX
void FUZ_bug976(void)
{ /* these constants shall not depend on MIN() macro */
assert(ZSTD_HASHLOG_MAX < 31);
assert(ZSTD_CHAINLOG_MAX < 31);
}
/*-*******************************************************
* Internal functions
*********************************************************/
#define MIN(a,b) ((a)<(b)?(a):(b)) #define MIN(a,b) ((a)<(b)?(a):(b))
#define MAX(a,b) ((a)>(b)?(a):(b)) #define MAX(a,b) ((a)>(b)?(a):(b))