[LLVMbugs] [Bug 2207] New: pred_iterator out of range

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=2207

           Summary: pred_iterator out of range
           Product: new-bugs
           Version: unspecified
          Platform: Macintosh
        OS/Version: MacOS X
            Status: NEW
          Severity: critical
          Priority: P2
         Component: new bugs
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: scottm at aero.org
                CC: llvmbugs at cs.uiuc.edu


This bug occurs when building a bootstrap (i.e., "I'm a n00bie that just
checked llvm out of the svn repo") version of llvm. I was able to narrow the
bug down to two before/after versions:

47988: No assert
47989: Assert gets triggered during 'make check'

To reproduce:
a) Install XCode 2.5 on a x86 Darwin machine (Mac Powerbook with Tiger)
b) check out version 47989 out of the svn repo
c) ./configure --enable-optimized
d) make
e) make check

During make check, the following assert gets triggered in many test cases, not
just one:

Support/CFG.h:64: failed assertion `!It.atEnd() && "pred_iterator out of
range!"


PS: If I had the time to track this down right now, I would.


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