[LLVMbugs] [Bug 14576] New: trap generated in code that shouldn't trap

bugzilla-daemon at llvm.org bugzilla-daemon at llvm.org
Tue Dec 11 11:11:10 PST 2012


             Bug #: 14576
           Summary: trap generated in code that shouldn't trap
           Product: clang
           Version: unspecified
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: C++11
        AssignedTo: unassignedclangbugs at nondot.org
        ReportedBy: alonzakai at gmail.com
                CC: dgregor at apple.com, llvmbugs at cs.uiuc.edu
    Classification: Unclassified

Created attachment 9677
  --> http://llvm.org/bugs/attachment.cgi?id=9677

The attached testcase works in clang 3.1, but fails in 3.2 rc3. Steps to

1. Unpack the archive
2. clang++ a.cpp -I. -std=c++11 -c -emit-llvm
3. llvm-dis a.o
4. Open a.o.ll in an editor and search for the definition of the function

That function contains

  call void @llvm.trap()

which should not be there.

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