[LLVMbugs] [Bug 4025] New: debug info generates duplicate label

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=4025

           Summary: debug info generates duplicate label
           Product: libraries
           Version: trunk
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Backend: X86
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: nlewycky at google.com
                CC: llvmbugs at cs.uiuc.edu


Created an attachment (id=2844)
 --> (http://llvm.org/bugs/attachment.cgi?id=2844)
c++ testcase

The attached delta-reduced test program produces bad assembly when built with
debug info:

$ llvm-g++ y.c -g
/tmp/cc5eEOy7.s: Assembler messages:
/tmp/cc5eEOy7.s:79: Error: symbol `.Llabel11' is already defined
$ llvm-g++ y.c
/usr/lib/../lib64/crt1.o: In function `_start':
(.text+0x20): undefined reference to `main'
collect2: ld returned 1 exit status

Not sure if it's llvm-gcc's fault for producing bad debug info in the first
place or a backend bug, so I'm filing it as a backend bug.

This happens on x86-64 linux.


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