[Bug binutils/1198] Segfault when executing objdump on a special file...

[lionel_debroux at yahoo dot fr]

https://sourceware.org/bugzilla/show_bug.cgi?id=1198

Lionel Debroux  changed:

   What|Removed |Added

 Status|WAITING |RESOLVED
 Resolution|--- |FIXED

--- Comment #4 from Lionel Debroux  ---
Alright, I've now been able to spend some time setting up 32-bit Cygwin on a
Windows computer (Win 7 x64 VM), and building several binutils versions :)

The results are as follows:
* for sanity checking: binutils 2.16.1a, successfully built by Cygwin GCC
5.2.0, segfaults on the file I posted 10 years ago if its prefix is
/tmp/m68k-coff-binutils or /tmp/m68k-coff-binu2161, but reports invalid
relocation data and exits with proper 1 value if the prefix is /home/<7-letter
username>/prefix/m68k-coff-binutils2161.
* binutils 2.25.1 (need to use -i for make) doesn't barf, when installed at
/tmp/m68k-coff-binutils, /tmp/m68k-coff-binu2251 or /home/<7-letter
username>/prefix/m68k-coff-binutils2251: they print that the file contains
invalid relocation data, as binutils 2.16 did under Linux (with unknown prefix)
10 years ago.
* binutils 2.21.1, 2.22, 2.23.2 don't build under that setup, even with make
-i;
* binutils 2.24 didn't barf at /home/<7-letter
username>/prefix/m68k-coff-binutils224, I haven't tested
/tmp/m68k-coff-binutils or /tmp/m68k-coff-binut224.

I suppose I'll mark this bug resolved, all the more the m68k-coff
(m68k-unknown-coff) target was made unsupported for gas years ago :)

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[Bug binutils/1198] Segfault when executing objdump on a special file...

[lionel_debroux at yahoo dot fr]

https://sourceware.org/bugzilla/show_bug.cgi?id=1198

--- Comment #3 from Lionel Debroux  ---
I had completely forgotten about this bug report posted several days after I
first installed Linux on my computer :)

In the meantime:
* I switched to Linux near-full-time in 2006, for both home and work usage.
This computer cannot easily run VirtualBox VMs anymore. The simplest way to
perform native Windows builds and tests is now to use another computer from
work, which could take a bit of time, possibly not before the end of next week.

* I co-created the GCC4TI development environment out of the aforementioned
TIGCC. Among the various bugfixes and improvements we made, the following ones
are relevant to this discussion:
1) the custom build scripts do not delete ar, objcopy, objdump, size and strip
any longer (better having incomplete tools for expert usage than none at all
!);
2) GCC4TI's gcc and binutils use a program prefix, so that they don't collide
with system gcc and binutils;
3) the local patch to binutils was expanded one hack-ish hunk, so as to mask
out the offending flag and make the binutils more usable, though not
necessarily in the way upstream would do it. See the first hunk of 
https://github.com/debrouxl/gcc4ti/blob/4a0341f02f9d95a205b8601ca7be39cd876c5b1c/trunk/tigcc/gcc/gas-2.16-tigcc-patch.diff
.

* binutils, like many other programs, went through rounds of fuzzing and
subsequent bugfixing, while GCC's Windows support further improved.

The problem might therefore well be gone from modern binutils versions, only
testing will tell - but I can't do that today :)

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[Bug binutils/1198] Segfault when executing objdump on a special file...

[sch...@linux-m68k.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=1198

Andreas Schwab  changed:

   What|Removed |Added

 Status|ASSIGNED|WAITING

--- Comment #2 from Andreas Schwab  ---
Does that still happen with the latest version?

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[Bug binutils/1198] Segfault when executing objdump on a special file...

[bje at sources dot redhat dot com]

-- 
   What|Removed |Added

 AssignedTo|unassigned at sources dot   |bje at sources dot redhat
   |redhat dot com  |dot com
 Status|NEW |ASSIGNED


http://sourceware.org/bugzilla/show_bug.cgi?id=1198

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