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When a function takes a variable number of pointer arguments, with a zero
pointer marking the end of the list, the zero *must* be cast to the pointer type. An un-cast zero is a 32-bit int, and at least on x86_64, gcc will not extend the zero to 64 bits, thus allowing the upper 32 bits to be random junk. The new END_WITH_NULL macro may be used to annotate a such a function so that GCC (version 4 or newer) will detect the use of un-casted zero at compile time. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23888 91177308-0d34-0410-b5e6-96231b3b80d8
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@@ -40,7 +40,7 @@ static void getTriggerCode(Module *M, BasicBlock *BB, int MethNo, Value *pathNo,
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const Type *PIntTy = PointerType::get(Type::IntTy);
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Function *trigMeth = M->getOrInsertFunction("trigger", Type::VoidTy,
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Type::IntTy, Type::IntTy,
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PIntTy, PIntTy, 0);
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PIntTy, PIntTy, (Type *)0);
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assert(trigMeth && "trigger method could not be inserted!");
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vector<Value *> trargs;
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