iconv crashed with SIGSEGV in fwrite() with option "-o directory"

[Per Ångström]

Binary package hint: libc6

I tried to use iconv to convert a file by giving a directory name for -o, hoping that iconv would be smart enough to create an output file in the output directory with the same name as the input file. Instead, iconv crashed.

How to reproduce:
1) mkdir iconv-output
2) echo test > iconv-in.txt
3) iconv -f iso88591 -t utf8 -o iconv-output iconv-in.txt

Actual result: iconv crashes.
Expected result: iconv should either produce an error message or create "iconv-output/iconv-in.txt".

ProblemType: Crash
Architecture: amd64
Dependencies:
 libgcc1 1:4.3.3-3ubuntu5
 gcc-4.3-base 4.3.3-3ubuntu5
 findutils 4.4.0-2ubuntu3
 libc6 2.9-0ubuntu10
DistroRelease: Ubuntu 9.04
ExecutablePath: /usr/bin/iconv
Package: libc6 2.9-0ubuntu10
ProcCmdline: iconv -f iso88591 -t utf8 Om_per_angstrom.rb -o rusex
Signal: 11
SourcePackage: glibc
StacktraceTop:
 fwrite () from /lib/libc.so.6
 ?? ()
 ?? ()
 ?? ()
 __libc_start_main () from /lib/libc.so.6
Title: iconv crashed with SIGSEGV in fwrite()
Uname: Linux 2.6.28-7-generic x86_64
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

[Apport retracing service (apport)]

StacktraceTop:fwrite () from /lib/libc.so.6
write_output ()
process_block ()
main ()

[Dave Gilbert (ubuntu-treblig)]

Yep, easily repeated (Intrepid 64bit).

[Per Ångström (autark)]

No improvement in glibc-2.10-1.

[Per Ångström (autark)]

Works for me in Ubuntu 10.10 RC1, iconv (Ubuntu EGLIBC 2.12.1-0ubuntu6) 2.12.1.

pang@barbara:~$ iconv -f iso88591 -t utf8 -o iconv-output iconv-in.txt
iconv: cannot open output file: Is a directory