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Handle ImportC special case wrt. non-variadic declaration vs. variadic definition

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This commit is contained in:
Martin Kinkelin 2022-02-19 23:55:20 +01:00
parent 5c9f1e5fd6
commit 84da9adf7d
1 changed files with 10 additions and 1 deletions
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11
gen/functions.cpp
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@ -651,7 +651,16 @@ void DtoDeclareFunction(FuncDeclaration *fdecl, const bool willDefine) {
if (fdecl->llvmInternal == LLVMextern_weak)
linkage = llvm::GlobalValue::ExternalWeakLinkage;
func = LLFunction::Create(functype, linkage, irMangle, &gIR->module);
} else if (func->getFunctionType() != functype) {
} else if (func->getFunctionType() == functype) {
// IR signature matches existing function
} else if (fdecl->isCsymbol() &&
func->getFunctionType() ==
LLFunctionType::get(functype->getReturnType(),
functype->params(), false)) {
// ImportC: a variadic definition replaces a non-variadic declaration; keep
// existing non-variadic IR function
assert(func->isDeclaration());
} else {
const auto existingTypeString = llvmTypeToString(func->getFunctionType());
const auto newTypeString = llvmTypeToString(functype);
error(fdecl->loc,