Bugzilla Bug 166527

Both ia64 and ppc64 have dev-ruby/ruby-gd marked as stable, but the code does
not seem to be 64-bit safe. The build output hints at this already:

GD.c: In function ‘img_set_interlace’:
GD.c:1380: warning: cast to pointer from integer of different size

and trying to run the example.rb file in the distribution on amd64 results in
this:

flame@enterprise ~/devel/hacking/ruby-GD-0.7.4/sample % ruby ./example.rb
./example.rb:16: [BUG] Segmentation fault
ruby 1.8.5 (2006-12-25) [x86_64-linux]

zsh: abort (core dumped)  ruby ./example.rb

the backtrace confirms the build output suggestion:

0  0x0000003000e2f7b5 in *__GI_raise (sig=<value optimized out>) at
../nptl/sysdeps/unix/sysv/linux/raise.c:64
#1  0x0000003000e30a4e in *__GI_abort () at abort.c:88
#2  0x0000003041229c70 in rb_bug (fmt=0x30412c435b "Segmentation fault") at
error.c:214
#3  0x0000003041298a6a in sigsegv (sig=11) at signal.c:537
#4  <signal handler called>
#5  rb_check_type (x=25716344, t=34) at ruby.h:678
#6  0x00002b8a02153d40 in img_set_interlace (img=<value optimized out>, val=2)
at GD.c:1380
#7  0x00000030412355bb in rb_call0 (klass=47871731195360, recv=47871731197560,
id=19812, oid=19812, argc=<value optimized out>,
    argv=<value optimized out>, body=0x2b8a018839a0, flags=<value optimized
out>) at eval.c:5810


So the package should have likely be marked -amd64 -ia64 -ppc64 rather than
ia64 and ppc64 stable.

does work here:

markus@G5 ~ $ uname -m
ppc64
markus@G5 ~ $ ruby /usr/share/doc/ruby-gd-0.7.4/sample/example.rb > file.png
markus@G5 ~ $

and I can open that file.

Compiler version? /me starts to think GCC is crazy.

this is gcc-4.1.1-r3

guess we're out. please CC us again, if you need further information from us.

In ia64 fails,

# ruby /usr/share/doc/ruby-gd-0.7.4/sample/example.rb > file.png
/usr/share/doc/ruby-gd-0.7.4/sample/example.rb:16: [BUG] Segmentation fault
ruby 1.8.5 (2006-12-04) [ia64-linux]

Marking -ia64. Closing.

There seems to be a new upstream, so I've reported the problem there as well.
See http://rubyforge.org/projects/ruby-gd/

I'm reopening this bug as I found the cause of the segmentation fault. I'm
including an updated ebuild and patch to the bug and would be happy to get
feedback on this. In particular: does this solve the segmentation fault, and
can you create a valid PNG file with the resulting ruby-GD?

Created an attachment (id=116758) [details]
Patch to fix segmentation fault with set interlace method

Created an attachment (id=116760) [details]
ruby-gd-0.7.4-r1.ebuild

Yup, it works on ia64.

Thanks for the feedback. I have committed the new ebuild and patch to CVS.