$ perl -V:gccversion # segfaults
gccversion='4.3.4';
$ perl5.8.9 -V:gccversion # OK
gccversion='4.3.3';
$ perl5.10.0 -V:gccversion # segfaults
gccversion='4.3.4';
$ perl5.10.1 -V:gccversion # segfaults
gccversion='4.3.4';
[download]

I don't have access to gcc-4.3.3 any more, so here's the only test I can try:

$ ./perl -Ilib -V:gccversion
gccversion='4.3.4';
$ ./perl y.pl
#!/usr/bin/perl
16-1
[download]

5.8.9 still works :-(