Note: This is a public test instance of Red Hat Bugzilla. The data contained within is a snapshot of the live data so any changes you make will not be reflected in the production Bugzilla. Email is disabled so feel free to test any aspect of the site that you want. File any problems you find or give feedback at bugzilla.redhat.com.
Bug 1308204 - uhd: FTBFS in rawhide
Summary: uhd: FTBFS in rawhide
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Fedora
Classification: Fedora
Component: uhd
Version: 24
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: ---
Assignee: Jaroslav Škarvada
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
: 1352168 1352298 (view as bug list)
Depends On:
Blocks: F24FTBFS
TreeView+ depends on / blocked
 
Reported: 2016-02-13 22:37 UTC by Fedora Release Engineering
Modified: 2016-07-05 05:01 UTC (History)
4 users (show)

Fixed In Version: uhd-3.9.4-2.fc24
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2016-07-05 05:01:19 UTC
Type: ---
Embargoed:


Attachments (Terms of Use)
build.log (deleted)
2016-02-13 22:37 UTC, Fedora Release Engineering
no flags Details
root.log (deleted)
2016-02-13 22:37 UTC, Fedora Release Engineering
no flags Details
state.log (deleted)
2016-02-13 22:37 UTC, Fedora Release Engineering
no flags Details

Description Fedora Release Engineering 2016-02-13 22:37:39 UTC
Your package uhd failed to build from source in current rawhide.

http://koji.fedoraproject.org/koji/taskinfo?taskID=12875584

For details on mass rebuild see https://fedoraproject.org/wiki/Fedora_24_Mass_Rebuild

Comment 1 Fedora Release Engineering 2016-02-13 22:37:41 UTC
Created attachment 1126670 [details]
build.log

Comment 2 Fedora Release Engineering 2016-02-13 22:37:43 UTC
Created attachment 1126672 [details]
root.log

Comment 3 Fedora Release Engineering 2016-02-13 22:37:44 UTC
Created attachment 1126673 [details]
state.log

Comment 4 Jan Kurik 2016-02-24 15:17:36 UTC
This bug appears to have been reported against 'rawhide' during the Fedora 24 development cycle.
Changing version to '24'.

More information and reason for this action is here:
https://fedoraproject.org/wiki/Fedora_Program_Management/HouseKeeping/Fedora24#Rawhide_Rebase

Comment 5 Jonathan Wakely 2016-05-24 12:34:42 UTC
This blocks gqrx from being rebuilt in F24.

The errors are:

/builddir/build/BUILD/uhd-release_003_008_002/host/utils/cdecode.c: In function 'int base64_decode_value(char)':
/builddir/build/BUILD/uhd-release_003_008_002/host/utils/cdecode.c:11:266: error: narrowing conversion of '-1' from 'int' to 'char' inside { } [-Wnarrowing]
     static const char decoding[] = {62,-1,-1,-1,63,52,53,54,55,56,57,58,59,60,61,-1,-1,-1,-2,-1,-1,-1,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,-1,-1,-1,-1,-1,-1,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51};
                                                                                                                                                                                                                                                                          ^
/builddir/build/BUILD/uhd-release_003_008_002/host/utils/cdecode.c:11:266: error: narrowing conversion of '-1' from 'int' to 'char' inside { } [-Wnarrowing]
/builddir/build/BUILD/uhd-release_003_008_002/host/utils/cdecode.c:11:266: error: narrowing conversion of '-1' from 'int' to 'char' inside { } [-Wnarrowing]
/builddir/build/BUILD/uhd-release_003_008_002/host/utils/cdecode.c:11:266: error: narrowing conversion of '-1' from 'int' to 'char' inside { } [-Wnarrowing]
/builddir/build/BUILD/uhd-release_003_008_002/host/utils/cdecode.c:11:266: error: narrowing conversion of '-1' from 'int' to 'char' inside { } [-Wnarrowing]
/builddir/build/BUILD/uhd-release_003_008_002/host/utils/cdecode.c:11:266: error: narrowing conversion of '-1' from 'int' to 'char' inside { } [-Wnarrowing]
/builddir/build/BUILD/uhd-release_003_008_002/host/utils/cdecode.c:11:266: error: narrowing conversion of '-2' from 'int' to 'char' inside { } [-Wnarrowing]
/builddir/build/BUILD/uhd-release_003_008_002/host/utils/cdecode.c:11:266: error: narrowing conversion of '-1' from 'int' to 'char' inside { } [-Wnarrowing]
/builddir/build/BUILD/uhd-release_003_008_002/host/utils/cdecode.c:11:266: error: narrowing conversion of '-1' from 'int' to 'char' inside { } [-Wnarrowing]
/builddir/build/BUILD/uhd-release_003_008_002/host/utils/cdecode.c:11:266: error: narrowing conversion of '-1' from 'int' to 'char' inside { } [-Wnarrowing]
/builddir/build/BUILD/uhd-release_003_008_002/host/utils/cdecode.c:11:266: error: narrowing conversion of '-1' from 'int' to 'char' inside { } [-Wnarrowing]
/builddir/build/BUILD/uhd-release_003_008_002/host/utils/cdecode.c:11:266: error: narrowing conversion of '-1' from 'int' to 'char' inside { } [-Wnarrowing]
/builddir/build/BUILD/uhd-release_003_008_002/host/utils/cdecode.c:11:266: error: narrowing conversion of '-1' from 'int' to 'char' inside { } [-Wnarrowing]
/builddir/build/BUILD/uhd-release_003_008_002/host/utils/cdecode.c:11:266: error: narrowing conversion of '-1' from 'int' to 'char' inside { } [-Wnarrowing]
/builddir/build/BUILD/uhd-release_003_008_002/host/utils/cdecode.c:11:266: error: narrowing conversion of '-1' from 'int' to 'char' inside { } [-Wnarrowing]
/builddir/build/BUILD/uhd-release_003_008_002/host/utils/cdecode.c:11:266: error: narrowing conversion of '-1' from 'int' to 'char' inside { } [-Wnarrowing]

I was surprised that code ever worked on ARM, and in fact it looks like it doesn't:

https://sourceforge.net/p/libb64/bugs/1/

Comment 6 Jonathan Wakely 2016-05-24 13:08:26 UTC
Also https://sourceforge.net/p/libb64/bugs/2/ deals with the same bug, but misses another one. I've attached an improved patch there.

Comment 7 Jaroslav Škarvada 2016-05-24 13:16:08 UTC
I think it's clear to me how to fix it (IIRC I fixed this gcc speciality in few other packages), but I am too lazy to patch it :) I will probably rebase the uhd package as I have already done in rawhide.

Comment 8 Jonathan Wakely 2016-05-24 13:40:18 UTC
Simply casting the literals to char won't fix it, the code is broken and doesn't work correctly (even on x86, see my comment at https://sourceforge.net/p/libb64/bugs/2/ about the off-by-one error).

Comment 9 Jaroslav Škarvada 2016-05-24 14:28:48 UTC
Thanks for info, it seems upstream workaround it the following way [1]:

- they switched from c++ to c, because it's C code,  so the C++11 requirements doesn't apply
- they used explicit conversion the following way:

if ((signed char)value_in < 0 || value_in > decoding_size) return -1;

It seems to compile and work (maybe it relies on gcc behaviour - I am not good at C standards).

[1] https://github.com/EttusResearch/uhd/blob/master/host/lib/usrp/x300/cdecode.c

Comment 10 Jonathan Wakely 2016-05-24 16:36:49 UTC
"It compiles" doesn't mean it's not still horribly broken.

For a start, as I've already said, that line you quoted has an off-by-one error. If value_in == decoding_size then it accesses off the end of the array.

Comment 11 Jonathan Wakely 2016-05-24 17:13:35 UTC
Also, for signed char, if value_in is -128 then this subtraction:

 value_in -= 43;

at https://github.com/EttusResearch/uhd/blob/master/host/lib/usrp/x300/cdecode.c#L13 will underflow, with undefined behaviour.

And when char is unsigned this cast has implementation-defined behaviour (so it works with GCC, but could produce the wrong result and/or raise a signal with other compilers):

                } while ((signed char)fragment < 0);

The code stinks.

Comment 12 Jaroslav Škarvada 2016-05-25 09:41:25 UTC
Right, it relies on undefined gcc behavior, but there is still off by one error. I will patch it downstream. Are you going to pull request your patch to uhd upstream?

Comment 13 Jonathan Wakely 2016-05-25 09:59:24 UTC
Yes, will do.

Comment 14 Jaroslav Škarvada 2016-05-25 10:01:38 UTC
Thanks.

Comment 15 Jaroslav Škarvada 2016-05-25 12:46:48 UTC
Applying https://github.com/EttusResearch/uhd/pull/60 downstream.

Comment 16 Fedora Update System 2016-05-25 15:34:04 UTC
uhd-3.9.4-2.fc24 gr-osmosdr-0.1.3-19.20141023git42c66fdd.fc24 gnuradio-3.7.9.1-4.fc24 has been submitted as an update to Fedora 24. https://bodhi.fedoraproject.org/updates/FEDORA-2016-22f4609f86

Comment 17 Fedora Update System 2016-05-26 05:01:31 UTC
gnuradio-3.7.9.1-4.fc24, gr-osmosdr-0.1.3-19.20141023git42c66fdd.fc24, uhd-3.9.4-2.fc24 has been pushed to the Fedora 24 testing repository. If problems still persist, please make note of it in this bug report.
See https://fedoraproject.org/wiki/QA:Updates_Testing for
instructions on how to install test updates.
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2016-22f4609f86

Comment 18 Jonathan Wakely 2016-07-03 17:21:54 UTC
*** Bug 1352168 has been marked as a duplicate of this bug. ***

Comment 19 Jaroslav Škarvada 2016-07-04 10:16:48 UTC
*** Bug 1352298 has been marked as a duplicate of this bug. ***

Comment 20 Fedora Update System 2016-07-05 05:01:16 UTC
gnuradio-3.7.9.1-4.fc24, gr-osmosdr-0.1.3-19.20141023git42c66fdd.fc24, uhd-3.9.4-2.fc24 has been pushed to the Fedora 24 stable repository. If problems still persist, please make note of it in this bug report.


Note You need to log in before you can comment on or make changes to this bug.