[LLVMbugs] [Bug 9787] New: error in backend: Starting a frame before finishing the previous one

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=9787

           Summary: error in backend: Starting a frame before finishing
                    the previous one
           Product: new-bugs
           Version: trunk
          Platform: All
        OS/Version: FreeBSD
            Status: NEW
          Severity: normal
          Priority: P
         Component: new bugs
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: dimitry at andric.com
                CC: llvmbugs at cs.uiuc.edu


Created an attachment (id=6500)
 --> (http://llvm.org/bugs/attachment.cgi?id=6500)
Test case for backend error

After LLVM commit r129571, compiling a certain file of GNU libstdc++
(bitmap_allocator.cpp) on FreeBSD with clang fails with:

fatal error: error in backend: Starting a frame before finishing the
previous one!

I have attached a reduced testcase.  This change was first introduced in
r129518, then reverted in r129557, becuase it "broke several buildbot
tests".  Then it was reapplied in r129571, but it still seems to be able
to cause trouble...

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