[LLVMbugs] [Bug 8816] New: [REGRESSION] r122072 miscompiles adpcm.c from FFmpeg

bugzilla-daemon at llvm.org bugzilla-daemon at llvm.org
Sun Dec 19 08:36:08 PST 2010


           Summary: [REGRESSION] r122072 miscompiles adpcm.c from FFmpeg
           Product: clang
           Version: trunk
          Platform: Macintosh
        OS/Version: MacOS X
            Status: NEW
          Severity: normal
          Priority: P
         Component: -New Bugs
        AssignedTo: unassignedclangbugs at nondot.org
        ReportedBy: ismail at namtrac.org
                CC: llvmbugs at cs.uiuc.edu

According to http://fate.ffmpeg.org/x86_64-apple-darwin10-clang/20101219094946
FFmpeg pcm code is miscompiled, bisection confirmed that r122071 by resistor
results in adpcm.c being miscompiled.

Only reproducable with -O2 and later on. Attached is the preprocessed source
for adpcm.c.

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