[Bug translator/15452] New: segmentation fault in libdw while running compiling debugtypes.stp on rawhide

["dsmith at redhat dot com" <sourceware-bugzilla at sourceware dot org>]

http://sourceware.org/bugzilla/show_bug.cgi?id=15452

             Bug #: 15452
           Summary: segmentation fault in libdw while running compiling
                    debugtypes.stp on rawhide
           Product: systemtap
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: translator
        AssignedTo: systemtap@sourceware.org
        ReportedBy: dsmith@redhat.com
    Classification: Unclassified


On rawhide (3.10.0-0.rc0.git21.1.fc20.x86_64), I'm seeing the following crash
when running the following command:

make installcheck RUNTESTFLAGS=debugtypes.exp

====
Running ../../src.copy/testsuite/systemtap.pass1-4/debugtypes.exp ...
Executing on host: gcc
../../src.copy/testsuite/systemtap.pass1-4/debugtypes.cxx  -gdwarf-4
-fdebug-types-section -g  -lm   -o debugtypes.exe    (timeout = 300)
spawn -ignore SIGHUP gcc
../../src.copy/testsuite/systemtap.pass1-4/debugtypes.cxx -gdwarf-4
-fdebug-types-section -g -lm -o debugtypes.exe
PASS: compiling debugtypes.cxx
starting ../../src.copy/testsuite/systemtap.pass1-4/debugtypes.stp 
spawn1 stap -p2 ../../src.copy/testsuite/systemtap.pass1-4/debugtypes.stp 
spawn stap -p2 ../../src.copy/testsuite/systemtap.pass1-4/debugtypes.stp
wait results: 22420 exp12 0 0 CHILDKILLED SIGSEGV {segmentation violation}
FAIL: compiling debugtypes.stp
====

According to gdb, we're crashing in libdw (from
elfutils-libs-0.155-5.fc19.x86_64):

====
Program received signal SIGSEGV, Segmentation fault.
0x0000003b43a0ba17 in __libdw_find_attr (die=die@entry=0x7fffffffabe0, 
    search_name=search_name@entry=1, codep=codep@entry=0x7fffffffabc0, 
    formp=formp@entry=0x7fffffffabc4) at dwarf_child.c:85
85          get_uleb128 (attr_name, attrp);
====

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