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Don't crash on code where the user put __attribute__((constructor)) on

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a function with arguments. This fixes rdar://11265785.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155073 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2012-04-18 22:24:33 +00:00
parent bdcfb7663a
commit 3b5b2a22ca
1 changed files with 5 additions and 1 deletions
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6
lib/Transforms/Scalar/ObjCARC.cpp
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@ -1033,7 +1033,11 @@ bool ObjCARCAPElim::runOnModule(Module &M) {
Value *Op = *OI;
// llvm.global_ctors is an array of pairs where the second members
// are constructor functions.
Function *F = cast<Function>(cast<ConstantStruct>(Op)->getOperand(1));
Function *F = dyn_cast<Function>(cast<ConstantStruct>(Op)->getOperand(1));
// If the user used a constructor function with the wrong signature and
// it got bitcasted or whatever, look the other way.
if (!F)
continue;
// Only look at function definitions.
if (F->isDeclaration())
continue;