'cp /proc/acpi/dsdt dsdt.asl; iasl -d dsdt.asl' consistently seg faults on my
machine. Yet when I rebuild the package from src.rpm, it functions correctly.

[oa@libretto tmp]$ rpm -q iasl
iasl-20061109-2.fc7

[oa@libretto tmp]$ rpm -V iasl

[oa@libretto tmp]$ sudo cp /proc/acpi/dsdt dsdt.asl

[oa@libretto tmp]$ iasl -d dsdt.asl 

Intel ACPI Component Architecture
AML Disassembler version 20061109 [Mar 10 2007]
Copyright (C) 2000 - 2006 Intel Corporation
Supports ACPI Specification Revision 3.0a

Segmentation fault

[oa@libretto tmp]$ gdb iasl GNU gdb Red Hat Linux (6.6-15.fc7rh)
Copyright (C) 2006 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "i386-redhat-linux-gnu"...
Using host libthread_db library "/lib/libthread_db.so.1".
(gdb) run -d dsdt.asl
Starting program: /usr/bin/iasl -d dsdt.asl

Intel ACPI Component Architecture
AML Disassembler version 20061109 [Mar 10 2007]
Copyright (C) 2000 - 2006 Intel Corporation
Supports ACPI Specification Revision 3.0a


Program received signal SIGSEGV, Segmentation fault.
0x49efbbcc in memcpy () from /lib/libc.so.6
(gdb) bt
#0  0x49efbbcc in memcpy () from /lib/libc.so.6
#1  0x080883c0 in AcpiTbResizeRootTableList ()
    at /usr/include/bits/string3.h:51
#2  0x08059d36 in main (argc=Cannot access memory at address 0x9
) at aslmain.c:798
#3  0x49ea1f70 in __libc_start_main () from /lib/libc.so.6
#4  0x08048eb1 in _start ()
(gdb) quit
The program is running.  Exit anyway? (y or n) y

[oa@libretto tmp]$ valgrind iasl -d dsdt.asl 
==4892== Memcheck, a memory error detector.
==4892== Copyright (C) 2002-2007, and GNU GPL'd, by Julian Seward et al.
==4892== Using LibVEX rev 1732, a library for dynamic binary translation.
==4892== Copyright (C) 2004-2007, and GNU GPL'd, by OpenWorks LLP.
==4892== Using valgrind-3.2.3, a dynamic binary instrumentation framework.
==4892== Copyright (C) 2000-2007, and GNU GPL'd, by Julian Seward et al.
==4892== For more details, rerun with: -v
==4892== 
==4892== Conditional jump or move depends on uninitialised value(s)
==4892==    at 0x49E77B1B: _dl_relocate_object (in /lib/ld-2.6.so)
==4892==    by 0x49E708DE: dl_main (in /lib/ld-2.6.so)
==4892==    by 0x49E80DCA: _dl_sysdep_start (in /lib/ld-2.6.so)
==4892==    by 0x49E6E2B7: _dl_start (in /lib/ld-2.6.so)
==4892==    by 0x49E6D816: (within /lib/ld-2.6.so)
==4892== 
==4892== Conditional jump or move depends on uninitialised value(s)
==4892==    at 0x49E77B23: _dl_relocate_object (in /lib/ld-2.6.so)
==4892==    by 0x49E708DE: dl_main (in /lib/ld-2.6.so)
==4892==    by 0x49E80DCA: _dl_sysdep_start (in /lib/ld-2.6.so)
==4892==    by 0x49E6E2B7: _dl_start (in /lib/ld-2.6.so)
==4892==    by 0x49E6D816: (within /lib/ld-2.6.so)
==4892== 
==4892== Conditional jump or move depends on uninitialised value(s)
==4892==    at 0x49E77C65: _dl_relocate_object (in /lib/ld-2.6.so)
==4892==    by 0x49E708DE: dl_main (in /lib/ld-2.6.so)
==4892==    by 0x49E80DCA: _dl_sysdep_start (in /lib/ld-2.6.so)
==4892==    by 0x49E6E2B7: _dl_start (in /lib/ld-2.6.so)
==4892==    by 0x49E6D816: (within /lib/ld-2.6.so)
==4892== 
==4892== Conditional jump or move depends on uninitialised value(s)
==4892==    at 0x49E77F5B: _dl_relocate_object (in /lib/ld-2.6.so)
==4892==    by 0x49E708DE: dl_main (in /lib/ld-2.6.so)
==4892==    by 0x49E80DCA: _dl_sysdep_start (in /lib/ld-2.6.so)
==4892==    by 0x49E6E2B7: _dl_start (in /lib/ld-2.6.so)
==4892==    by 0x49E6D816: (within /lib/ld-2.6.so)
==4892== 
==4892== Conditional jump or move depends on uninitialised value(s)
==4892==    at 0x49E78430: _dl_relocate_object (in /lib/ld-2.6.so)
==4892==    by 0x49E708DE: dl_main (in /lib/ld-2.6.so)
==4892==    by 0x49E80DCA: _dl_sysdep_start (in /lib/ld-2.6.so)
==4892==    by 0x49E6E2B7: _dl_start (in /lib/ld-2.6.so)
==4892==    by 0x49E6D816: (within /lib/ld-2.6.so)
==4892== 
==4892== Conditional jump or move depends on uninitialised value(s)
==4892==    at 0x49E77B1B: _dl_relocate_object (in /lib/ld-2.6.so)
==4892==    by 0x49E70A85: dl_main (in /lib/ld-2.6.so)
==4892==    by 0x49E80DCA: _dl_sysdep_start (in /lib/ld-2.6.so)
==4892==    by 0x49E6E2B7: _dl_start (in /lib/ld-2.6.so)
==4892==    by 0x49E6D816: (within /lib/ld-2.6.so)
==4892== 
==4892== Conditional jump or move depends on uninitialised value(s)
==4892==    at 0x49E77B23: _dl_relocate_object (in /lib/ld-2.6.so)
==4892==    by 0x49E70A85: dl_main (in /lib/ld-2.6.so)
==4892==    by 0x49E80DCA: _dl_sysdep_start (in /lib/ld-2.6.so)
==4892==    by 0x49E6E2B7: _dl_start (in /lib/ld-2.6.so)
==4892==    by 0x49E6D816: (within /lib/ld-2.6.so)
==4892== 
==4892== Conditional jump or move depends on uninitialised value(s)
==4892==    at 0x49E77C65: _dl_relocate_object (in /lib/ld-2.6.so)
==4892==    by 0x49E70A85: dl_main (in /lib/ld-2.6.so)
==4892==    by 0x49E80DCA: _dl_sysdep_start (in /lib/ld-2.6.so)
==4892==    by 0x49E6E2B7: _dl_start (in /lib/ld-2.6.so)
==4892==    by 0x49E6D816: (within /lib/ld-2.6.so)

Intel ACPI Component Architecture
AML Disassembler version 20061109 [Mar 10 2007]
Copyright (C) 2000 - 2006 Intel Corporation
Supports ACPI Specification Revision 3.0a

Loading Acpi table from file dsdt.asl
Acpi table [DSDT] successfully installed and loaded
Pass 1 parse of [DSDT]
Pass 2 parse of [DSDT]
Parsing Deferred Opcodes (Methods/Buffers/Packages/Regions)
..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Parsing completed
Disassembly completed, written to "dsdt.dsl"
==4892== 
==4892== ERROR SUMMARY: 12 errors from 8 contexts (suppressed: 0 from 0)
==4892== malloc/free: in use at exit: 156,071 bytes in 3,196 blocks.
==4892== malloc/free: 15,325 allocs, 12,129 frees, 981,869 bytes allocated.
==4892== For counts of detected errors, rerun with: -v
==4892== searching for pointers to 3,196 not-freed blocks.
==4892== checked 212,096 bytes.
==4892== 
==4892== LEAK SUMMARY:
==4892==    definitely lost: 7,917 bytes in 162 blocks.
==4892==      possibly lost: 0 bytes in 0 blocks.
==4892==    still reachable: 148,154 bytes in 3,034 blocks.
==4892==         suppressed: 0 bytes in 0 blocks.
==4892== Rerun with --leak-check=full to see details of leaked memory.

[oa@libretto tmp]$ sudo rpm -Uvh /var/tmp/rpm/RPMS/i386/iasl-20061109-2.i386.rpm
--oldpackage
Preparing...                ########################################### [100%]
   1:iasl                   ########################################### [100%]

[oa@libretto tmp]$ iasl -d dsdt.asl 
Intel ACPI Component Architecture
AML Disassembler version 20061109 [Aug 11 2007]
Copyright (C) 2000 - 2006 Intel Corporation
Supports ACPI Specification Revision 3.0a

Loading Acpi table from file dsdt.asl
Acpi table [DSDT] successfully installed and loaded
Pass 1 parse of [DSDT]
Pass 2 parse of [DSDT]
Parsing Deferred Opcodes (Methods/Buffers/Packages/Regions)
..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Parsing completed
Disassembly completed, written to "dsdt.dsl"