diff --git a/lib/lz4/lz4_decompress.c b/lib/lz4/lz4_decompress.c index 00cb0d0b73e165a92ab1fe55e9ba1c6855f1520e..8a7724a6ce2fb451f0231f1a6ef6c05c11fa4fbf 100644 --- a/lib/lz4/lz4_decompress.c +++ b/lib/lz4/lz4_decompress.c @@ -263,7 +263,11 @@ static FORCE_INLINE int LZ4_decompress_generic( } } - LZ4_memcpy(op, ip, length); + /* + * supports overlapping memory regions; only matters + * for in-place decompression scenarios + */ + LZ4_memmove(op, ip, length); ip += length; op += length; diff --git a/lib/lz4/lz4defs.h b/lib/lz4/lz4defs.h index c91dd96ef6291764601037de837e6e5014dbf42c..673bd206aa98b6d325a5e01439c250ac3c7a1dd6 100644 --- a/lib/lz4/lz4defs.h +++ b/lib/lz4/lz4defs.h @@ -146,6 +146,7 @@ static FORCE_INLINE void LZ4_writeLE16(void *memPtr, U16 value) * environments. This is needed when decompressing the Linux Kernel, for example. */ #define LZ4_memcpy(dst, src, size) __builtin_memcpy(dst, src, size) +#define LZ4_memmove(dst, src, size) __builtin_memmove(dst, src, size) static FORCE_INLINE void LZ4_copy8(void *dst, const void *src) {