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Invalid func fix #408

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Feb 28, 2024
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7 changes: 7 additions & 0 deletions lib/Lifters/FunctionLifter.cpp
Original file line number Diff line number Diff line change
Expand Up @@ -409,6 +409,13 @@ llvm::Function *FunctionLifter::LiftFunction(const FunctionDecl &decl) {
return nullptr;
}

// Function has no valid instructions.
auto &cfg = decl.cfg;
if (cfg.find(decl.entry_uid) == cfg.end()) {
LOG(ERROR) << "Function missing entry block " << std::hex << decl.address;
return nullptr;
}

// This is our higher-level function, i.e. it presents itself more like
// a function compiled from C/C++, rather than being a three-argument Remill
// function. In this function, we will stack-allocate a `State` structure,
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