Bug#37902: libc6: SEGV in fflush

[Giuliano P Procida <myxie@henry.dev.madge.com>]

Package: libc6
Version: 2.1.1-5

>From gdb:

#0  0x40086981 in fflush ()                                                     

or with libc6-dbg and LD_PRELOAD:

#0  0x40066981 in _IO_fflush (fp=0x85d32f0) at iofflush.c:41                    

I have verified that fflush is entered via a call to the jump table
(plt), the disassembly looks like:

08549690 <shutdownHaskell>:
 8549690:       e8 4b 26 00 00          call   854bce0 <finaliseWeakPointersNow>
 8549695:       e8 26 23 00 00          call   854b9c0 <exitStorage>
 854969a:       68 f0 32 5d 08          pushl  $0x85d32f0
 854969f:       e8 d0 f9 af ff          call   8049074 <_init+0x114>
 85496a4:       83 c4 04                addl   $0x4,%esp
 85496a7:       c3                      ret

where _init+0x114 is a jump to the start of fflush. I think the code is
just "fflush (stdout)".

Giuliano.

-- System Information
Debian Release: potato
Kernel Version: Linux henry 2.2.6 #5 Thu May 6 15:15:49 BST 1999 i686 unknown

Versions of the packages libc6 depends on:
ii  ldso            1.9.11-2       The Linux dynamic linker, library and utilit