[LLVMbugs] [Bug 22495] New: Assertion `Offset <= PieceOffset && "overlapping or duplicate pieces"' failed.

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=22495

            Bug ID: 22495
           Summary: Assertion `Offset <= PieceOffset && "overlapping or
                    duplicate pieces"' failed.
           Product: clang
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: -New Bugs
          Assignee: unassignedclangbugs at nondot.org
          Reporter: hans at chromium.org
                CC: aprantl at apple.com, llvmbugs at cs.uiuc.edu
    Classification: Unclassified

Created attachment 13818
  --> http://llvm.org/bugs/attachment.cgi?id=13818&action=edit
unreduced repro

We ran into this when compiling Chromium.

This does not happen on the 3.6 release branch.

Attaching unreduced repro. Run line:

clang "-cc1" "-triple" "x86_64-unknown-linux-gnu" "-emit-obj" "-disable-free"
"-main-file-name" "prog_opt_constant_fold.c" "-mrelocation-model" "pic"
"-pic-level" "2" "-mthread-model" "posix" "-relaxed-aliasing" "-fmath-errno"
"-masm-verbose" "-mconstructor-aliases" "-target-cpu" "x86-64"
"-momit-leaf-frame-pointer" "-g" "-dwarf-column-info" "-ffunction-sections"
"-fdata-sections"  "-O2"   "-fvisibility" "hidden" "-pthread"
"-stack-protector" "1" "-stack-protector-buffer-size" "4" "-mstackrealign"
"-fobjc-runtime=gcc"  "-vectorize-loops" "-vectorize-slp" "-x" "c"
"pieceoffset.c"

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