Michael Felt <mich...@felt.demon.nl> added the comment:
Actually, the libc/libuuid function called should be setting the
version/variant values as well.
So, I think the AMD64 FreeBSD 10.x Shared 3.x uuid_generate() function is wrong
(if that is what it is using - was it/can it also use the uuid_generate*
routines?
FYI:
I notice the AIX include file does not actually define the bits for RFC_4122,
etc.., but the include file comments does show that the implementation is
taking them into account.
/** The strlen() of a UUID string (does not include terminating null) */
#define UUID_STRLEN 36
/**
* Constant value indicating an as-yet undetermined UUID for a thing. Spells \c
* "\0\0UUID\x10_\x80UNKNOWN" in ASCII. Zeroes at the top make it very unlikely
* to collide with a uuid_create()d value, which puts a timestamp in that spot.
* The \c "\x10" and \c "\x80" are reserved/version/mask bits that make this
* conform to the format expected by the uuid.h API.
*/
#define UUID_UNKNOWN (uuid_t){0x00005555, 0x4944, 0x105F, 0x80, 0x55, {0x4E,
0x4B, 0x4E, 0x4F, 0x57, 0x4E}}
#define UUID_UNKNOWN_STR "00005555-4944-105f-8055-4e4b4e4f574e"
I wrote a simple program to examine uuid for myself.
Maybe - if you ran a loop (looking at uuid1().variant and uuid1().version you
could see if there is an incorrect version showing up. Rather than python -
that would seem to be a library function error.
My very simple program:
cat -n ../x4.py
1 import _uuid
2 import uuid
3 _generate_time_safe = _uuid.generate_time_safe
4 _has_uuid_generate_time_safe = _uuid.has_uuid_generate_time_safe
5 uuid_time, _ = _generate_time_safe()
6
7 uu1a = uuid.UUID(bytes=uuid_time)
8 uu1b = uuid.uuid1()
9 uu4 = uuid.uuid4()
10
11 print("a)uuid1 = %x" % uu1a.int)
12 print("b)uuid1 = %x" % uu1b.int)
13 print("")
14 print("a uuid1 = ",uu1a.fields, uu1a.version, uu1a.variant)
15 print("b uuid1 = ",uu1b.fields, uu1b.version, uu1b.variant)
16 uu1c = uuid.uuid1()
17 print("c uuid1 = ",uu1c.fields, uu1c.version, uu1c.variant)
18 print("")
19 print(" uuid4 = %x" % uu4.int)
20 print(" uuid4 = ",uu4.fields, uu4.version, uu4.variant)
21 print("")
22 uu4 = uuid.uuid4()
23 print(" uuid4 = %x" % uu4.int)
24 print(" uuid4 = ",uu4.fields, uu4.version, uu4.variant)
----------
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<https://bugs.python.org/issue32493>
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