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Bug 486480

Summary: =net-misc/tigervnc-1.2.80_p5065 : FORTIFY_SOURCE reports presence of overflow
Product: Gentoo Linux Reporter: Agostino Sarubbo <ago>
Component: Current packagesAssignee: No maintainer - Look at https://wiki.gentoo.org/wiki/Project:Proxy_Maintainers if you want to take care of it <maintainer-needed>
Status: RESOLVED FIXED    
Severity: normal Keywords: REGRESSION
Priority: Normal    
Version: unspecified   
Hardware: All   
OS: Linux   
Whiteboard:
Package list:
Runtime testing required: ---
Bug Depends on:    
Bug Blocks: 259417, 485436    

Description Agostino Sarubbo gentoo-dev 2013-09-29 12:40:53 UTC
* Messages for package net-misc/tigervnc-1.2.80_p5065:

 * QA Notice: Package triggers severe warnings which indicate that it
 *            may exhibit random runtime failures.
 * /usr/include/bits/stdio2.h:66:44: warning: call to int __builtin___snprintf_chk(char*, long unsigned int, int, long unsigned int, const char*, ...) will always overflow destination buffer [enabled by default]
 * Please do not file a Gentoo bug and instead report the above QA
 * issues directly to the upstream developers of this software.
 * Homepage: http://www.tigervnc.org


From the log:

[ 97%] Building CXX object vncviewer/CMakeFiles/vncviewer.dir/parameters.cxx.o
Linking CXX executable x0vncserver
/var/tmp/portage/net-misc/tigervnc-1.2.80_p5065/work/tigervnc-1.2.80-20130314svn5065/vncviewer/parameters.cxx: In function 'bool encodeValue(const char*, char*, size_t)':
/var/tmp/portage/net-misc/tigervnc-1.2.80_p5065/work/tigervnc-1.2.80-20130314svn5065/vncviewer/parameters.cxx:199:69: warning: format '%d' expects argument of type 'int', but argum
ent 3 has type 'size_t {aka long unsigned int}' [-Wformat]
/var/tmp/portage/net-misc/tigervnc-1.2.80_p5065/work/tigervnc-1.2.80-20130314svn5065/vncviewer/parameters.cxx:212:73: warning: format '%d' expects argument of type 'int', but argum
ent 3 has type 'size_t {aka long unsigned int}' [-Wformat]
/var/tmp/portage/net-misc/tigervnc-1.2.80_p5065/work/tigervnc-1.2.80-20130314svn5065/vncviewer/parameters.cxx:230:67: warning: format '%d' expects argument of type 'int', but argum
ent 3 has type 'size_t {aka long unsigned int}' [-Wformat]
[ 97%] Built target x0vncserver
[ 98%] Building C object vncviewer/CMakeFiles/vncviewer.dir/keysym2ucs.c.o
In file included from /usr/include/stdio.h:934:0,
                 from /var/tmp/portage/net-misc/tigervnc-1.2.80_p5065/work/tigervnc-1.2.80-20130314svn5065/common/rfb/Logger.h:25,
                 from /var/tmp/portage/net-misc/tigervnc-1.2.80_p5065/work/tigervnc-1.2.80-20130314svn5065/common/rfb/LogWriter.h:25,
                 from /var/tmp/portage/net-misc/tigervnc-1.2.80_p5065/work/tigervnc-1.2.80-20130314svn5065/vncviewer/parameters.cxx:38:
In function 'int snprintf(char*, size_t, const char*, ...)',
    inlined from 'void saveViewerParameters(const char*, const char*)' at /var/tmp/portage/net-misc/tigervnc-1.2.80_p5065/work/tigervnc-1.2.80-20130314svn5065/vncviewer/parameters.
cxx:527:33:
/usr/include/bits/stdio2.h:66:44: warning: call to int __builtin___snprintf_chk(char*, long unsigned int, int, long unsigned int, const char*, ...) will always overflow destination buffer [enabled by default]
Comment 1 Raúl Porcel (RETIRED) gentoo-dev 2013-09-29 16:38:16 UTC
Hrm...

Please do not file a Gentoo bug and instead report the above QA
 * issues directly to the upstream developers of this software.
Comment 2 Agostino Sarubbo gentoo-dev 2013-09-29 16:45:38 UTC
(In reply to Raúl Porcel from comment #1)
> Hrm...
> 
> Please do not file a Gentoo bug and instead report the above QA
>  * issues directly to the upstream developers of this software.

This is a valid bug for gentoo, see the tracker.
Comment 3 Pacho Ramos gentoo-dev 2016-05-24 08:37:23 UTC
I think this is fixed in 1.6.x versions