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1 | List of known bugs (certainly very incomplete) |
2 | ---------------------------------------------- | |
3 | ||
a334319f | 4 | Time-stamp: <02/09/30 13:49:48 drepper> |
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5 | |
6 | This following list contains those bugs which I'm aware of. Please | |
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7 | make sure that bugs you report are not listed here. If you can fix one |
8 | of these bugs/limitations I'll certainly be glad to receive a patch. | |
c57abfa7 | 9 | |
bc9f6000 | 10 | Another source of information about bugs is the problem data base of the |
8f2ece69 | 11 | GNU project. There is an easy to use WWW interface available at |
bc9f6000 | 12 | |
a334319f | 13 | http://www-gnats.gnu.org:8080/cgi-bin/wwwgnats.pl |
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14 | |
15 | I would appreciate it very much if you could verify the problem was not | |
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16 | reported before by looking through the database. To make the information |
17 | in this database as useful as possible please report bugs always using the | |
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18 | `glibcbug' shell script which gets installed with GNU libc. Before reporting |
19 | a bug please check the FAQ since it discusses also a lot of problematic | |
20 | situations. | |
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21 | |
22 | ||
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23 | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
24 | ||
25 | Severity: [ *] to [***] | |
c57abfa7 | 26 | |
a673fbcb | 27 | [ **] Closing shared objects in statically linked binaries most of the |
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28 | times leads to crashes during the dlopen(). Hard to fix. |
29 | ||
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30 | [ **] There are problems with signal handling when using LinuxThreads. |
31 | ||
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32 | [ **] The RPC code is not 64 bit clean. This is getting slowly fixed |
33 | but expect incompatible changes on 64 bit platforms like Alpha. | |
34 | ||
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35 | [ **] If a DSO is using implicitly libpthread and the application itself |
36 | does not there is a name lookup problem. E.g., the function fork() | |
37 | will be found in the libc.so instead of libpthread since the thread | |
38 | library is behind the libc. To correct this problem it must *not* | |
39 | be relied on the currently still enabled handling of weak symbols | |
40 | in the dynamic linker. Instead explicit tests for the availability | |
41 | of the libpthread version are needed. [PR libc/2325] | |
42 | ||
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43 | [ *] The precision of the `sinhl' and/or `asinhl' function do not seem |
44 | to be the best. | |
45 | ||
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46 | [ *] On Linux, there should be a way to prevent defining the symbol |
47 | NGROUPS_MAX in the <linux/limits.h> header file. In glibc it | |
48 | is defined in <posix1_lim.h> which must not make the other | |
49 | symbols in <linux/limits.h> available. | |
50 | [PR libc/140] | |
51 | ||
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52 | [ *] The libm-ieee `gamma' function gives wrong results (at least for |
53 | -0.5). | |
54 | ||
55 | [ *] The libm-ieee `scalb' function gives wrong results for | |
56 | non-integral second parameters. | |
fe0ec73e | 57 | |
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58 | [ *] Several (most?) collation specifications are broken. The code which |
59 | is currently there is in most cases inherited from the originial | |
60 | author (in case there is a LC_COLLATE specification in the locale | |
61 | file) or is defined using the default (if iso14651_t1 is included). | |
62 | ||
63 | In any case we are missing information to correct the specification. | |
64 | If you find the specification for your language be faulty please | |
65 | send a report with instruction on what to fix. You don't have to | |
66 | fix the specification yourself. | |
67 | ||
68 | The way it finally should look like (if the generic specification | |
69 | is not correct) can be seen in the sv_SE file. Quite a few changes | |
70 | on top of the generic specification can be made without duplication | |
71 | of the whole LC_COLLATE description. | |
72 | ||
d3d99893 | 73 | [ *] Some of the functions which also handled IPv6 are currently broken. |
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74 | IPv6 and IPv4 lookups occasionally happen when not needed. This |
75 | happens in getaddrinfo() and getnameinfo(). IPv4 handling of | |
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76 | these functions is OK though and there are patches available to fix |
77 | the IPv6 code as well. | |
78 | ||
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79 | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
80 | Ulrich Drepper | |
fdb7f386 | 81 | drepper@redhat.com |