[LLVMbugs] [Bug 18537] New: src/editfns.c from emacs gets miscompiled at -O > 0

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=18537

            Bug ID: 18537
           Summary: src/editfns.c from emacs gets miscompiled at -O > 0
           Product: clang
           Version: trunk
          Hardware: PC
                OS: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: -New Bugs
          Assignee: unassignedclangbugs at nondot.org
          Reporter: mirek.kaim at gmail.com
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

Created attachment 11890
  --> http://llvm.org/bugs/attachment.cgi?id=11890&action=edit
backtrace

clang 3.4 miscompiles src/editfns.c from emacs, causing emacs to crash.
compiled with CFLAGS="--target=i686-pc-cygwin -march=pentium3 -mtune=pentium3
-O3", bug occurs at -O > 0.
backtrace in the attachment.

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