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[sil] Catch if we are creating ABI incompatible convert_function inst… #13135

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Merged
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Nov 29, 2017
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Merged

[sil] Catch if we are creating ABI incompatible convert_function inst… #13135

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14 changes: 12 additions & 2 deletions lib/SIL/SILInstructions.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -2107,8 +2107,18 @@ ConvertFunctionInst::create(SILDebugLocation DebugLoc, SILValue Operand,
unsigned size =
totalSizeToAlloc<swift::Operand>(1 + TypeDependentOperands.size());
void *Buffer = Mod.allocateInst(size, alignof(ConvertFunctionInst));
return ::new (Buffer) ConvertFunctionInst(DebugLoc, Operand,
TypeDependentOperands, Ty);
auto *CFI = ::new (Buffer)
ConvertFunctionInst(DebugLoc, Operand, TypeDependentOperands, Ty);
// Make sure we are not performing ABI-incompatible conversions.
CanSILFunctionType opTI =
CFI->getOperand()->getType().castTo<SILFunctionType>();
(void)opTI;
CanSILFunctionType resTI =
CFI->getOperand()->getType().castTo<SILFunctionType>();
(void)resTI;
assert(opTI->isABICompatibleWith(resTI).isCompatible() &&
"Can not convert in between ABI incompatible function types");
return CFI;
}

bool KeyPathPatternComponent::isComputedSettablePropertyMutating() const {
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