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Set up NULL values for default arguments when creating ispc functions from LLVM bitcode builtins.

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Fixes occasional crashes due to accessing uninitialized memory.
This commit is contained in:
Matt Pharr
2011-07-06 15:33:26 +01:00
parent 6e4c165c7e
commit 8e5ea9c33c
1 changed files with 6 additions and 0 deletions
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6
builtins.cpp
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@@ -178,6 +178,12 @@ lCreateISPCSymbol(llvm::Function *func, SymbolTable *symbolTable) {
// so that we get symbols for things with no integer types! // so that we get symbols for things with no integer types!
if (i == 0 || anyIntArgs == true) { if (i == 0 || anyIntArgs == true) {
FunctionType *funcType = new FunctionType(returnType, argTypes, noPos); FunctionType *funcType = new FunctionType(returnType, argTypes, noPos);
// set NULL default arguments
std::vector<ConstExpr *> defaults;
for (int j = 0; j < ftype->getNumParams(); ++j)
defaults.push_back(NULL);
funcType->SetArgumentDefaults(defaults);
Symbol *sym = new Symbol(name, noPos, funcType); Symbol *sym = new Symbol(name, noPos, funcType);
sym->function = func; sym->function = func;
symbolTable->AddFunction(sym); symbolTable->AddFunction(sym);