Bug 772358

Description of problem:
libvirt uses pdwtags as part of 'make check' to ensure binary compatible layouts between versions.  However, on rawhide, this check fails (see bug 613600), since gcc is new enough to be outputting additional DWARF debugging elements that pdwtags has not yet learned to parse.

Version-Release number of selected component (if applicable):
dwarves-1.9-1.fc16.x86_64
gcc-4.7.0-0.4.fc17.x86_64
binutils-2.22-1.fc17.x86_64

How reproducible:
100%

Steps to Reproduce:
1. I've gone ahead and pre-compiled the same file on both F16 (gcc-4.6.2-1.fc16.x86_64 and binutils-2.21.53.0.1-6.fc16.x86_64) and rawhide (versions shown above), and attached the two object files (the compiled file is libvirt_net_rpc_la-virkeepaliveprotocol.o from libvirt.git); the steps below use the same version of pdwtags, so the only difference is in the gcc and binutils versions used to make the .o file
2. pdwtags --verbose f16.o | wc
3. pdwtags --verbose f17.o
  
Actual results:
2.     280    1006    5310
3. die__process_function: DW_TAG_INVALID (0x4109) @ <0x58c> not handled!

Expected results:
Both .o files should be decoded, with only minor variations in output according to whatever minor variations were present in the gcc code generation.

Additional info:
I also reproduced this on the i686 versions of the packages.