[Bug libc/10071] 2.9.90 (2009-04-14) libio/genops.c : __underflow() does not handle NULL FP

["jason dot vas dot dias at gmail dot com" <sourceware-bugzilla at sourceware dot org>]

------- Additional Comments From jason dot vas dot dias at gmail dot com  2009-04-19 07:28 -------
Sorry, this bug was actually caused by ldconfig(1) after installation making
gtk+-2.0 pick up the new libselinux.so.1 which in its init() constructor 
refers to the GLIBC extension 
     `__getdelim'
 (via  'getline')
which with the newer headers is now defined for x86_64 ; but getline() is not
in the older stdio standard used by 2005 vintage libstdio + libsfio - it is in
the newer libast (2006+) , so the glibc __getdelim is NOT over-ridden by any
SFIO getdelim or similar - it is now in the version used by my app. Sorry, 
but this database app has to link with a certain version of SFIO and this
caused confusion.  

Incidentally, perhaps this might lead to some propagation of the ld(1) 
 '-z (no?)muldefs' 
 options to ld.so(1) ? ie. Perhaps some new:
 '-z dynamic-(no?)muldefs' option -
 I mean, what is to stop subsequent load modules loaded with dlopen(3) 
with RTLD_GLOBAL options set overriding for instance glibc functions
such as __getdelim or fopen() etc. that are to be used by subsequently 
loaded with dlopen() modules ? If such an option had been available, then
the whole app could have been compiled with '-z defs' (default) ? 
Even programs built with '-z defs' can load modules that contain
their own definition of global symbols that will subsequently be
used by modules loaded later ? What about supporting something like
Solaris "interposer" object groups in Linux ld-linux.so.2 ?

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |INVALID


http://sourceware.org/bugzilla/show_bug.cgi?id=10071

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