[LLVMbugs] [Bug 18623] New: The call to 'free' created by CallInst::CreateFree might not end up in any basic block even though a insertion point was given

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=18623

            Bug ID: 18623
           Summary: The call to 'free' created by CallInst::CreateFree
                    might not end up in any basic block even though a
                    insertion point was given
           Product: new-bugs
           Version: trunk
          Hardware: All
                OS: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: new bugs
          Assignee: unassignedbugs at nondot.org
          Reporter: doerfert at cs.uni-saarland.de
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

If the static function createFree in IR/Instructions.cpp (apprx. line 481) is
called with a basic block in which the call to free should be placed, it might
not end up there.

The code which reads (git: 79e3fb53d618d12e239275ef055200bbd6f8253e):

    if (Source->getType() != IntPtrTy)
      PtrCast = new BitCastInst(Source, IntPtrTy, "", InsertAtEnd);
    Result = CallInst::Create(FreeFunc, PtrCast, "");

should be changed to:

    if (Source->getType() != IntPtrTy)
      PtrCast = new BitCastInst(Source, IntPtrTy, "", InsertAtEnd);
    Result = CallInst::Create(FreeFunc, PtrCast, "", InsertAtEnd);

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