diff options
| -rw-r--r-- | Changes | 7 | ||||
| -rw-r--r-- | lzf_c.c | 13 |
2 files changed, 14 insertions, 6 deletions
@@ -1,7 +1,8 @@ - - include a workaround for a compiler bug on 64 bit windows - (microsoft claims to support POSIX, but is far from it). - (analysed nicely by John Lilley). +3.2 + - include a workaround for failing POSIX and real-world compliance + on 64 bit windows (microsoft claims to support POSIX, but is far + from it). (bug found and analysed nicely by John Lilley). 3.1 Fri Nov 30 11:33:04 CET 2007 - IMPORTANT BUGFIX: a too long final literal run would corrupt data @@ -113,12 +113,19 @@ lzf_compress (const void *const in_data, unsigned int in_len, u8 *out_end = op + out_len; const u8 *ref; - unsigned int hval; -#if WIN32 - unsigned _int64 off; /* workaround for microsoft bug (they claim to support POSIX) */ + /* off requires a type wide enough to hold a general pointer difference. + * ISO C doesn't have that (size_t might not be enough and ptrdiff_t only + * works for differences within a single object). We also assume that no + * no bit pattern traps. Since the only platform that is both non-POSIX + * and fails to support both assumptions is windows 64 bit, we make a + * special workaround for it. + */ +#if defined (WIN32) && defined (_M_X64) + unsigned _int64 off; /* workaround for missing POSIX compliance */ #else unsigned long off; #endif + unsigned int hval; int lit; if (!in_len || !out_len) |