[LLVMbugs] [Bug 15945] New: Assembler crashes on invalid 'out al, 4'

bugzilla-daemon at llvm.org bugzilla-daemon at llvm.org
Thu May 9 14:19:12 PDT 2013


            Bug ID: 15945
           Summary: Assembler crashes on invalid 'out al, 4'
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: MC
          Assignee: unassignedbugs at nondot.org
          Reporter: matthewbg at google.com
                CC: chad.rosier at gmail.com, grosbach at apple.com,
                    llvmbugs at cs.uiuc.edu
    Classification: Unclassified

Found while playing around with PR15944:
$ clang -x assembler -c -o /dev/null - <<EOF
.intel_syntax noprefix
out al, 4  
clang: include/llvm/ADT/SmallVector.h:144: const_reference
llvm::SmallVectorTemplateCommon<llvm::MCOperand, void>::operator[](unsigned
int) const [T = llvm::MCOperand]: Assertion `begin() + idx < end()' failed.

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