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[LLD] [COFF] Zero-intialization & proper constructor invocation in COFF's Symbol #98447

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Jul 22, 2024
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[LLD] [COFF] Zero-intialization & proper constructor invocation in COFF's Symbol #98447

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10 changes: 6 additions & 4 deletions lld/COFF/Symbols.h
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Original file line number Diff line number Diff line change
Expand Up @@ -98,10 +98,10 @@ class Symbol {
friend SymbolTable;
explicit Symbol(Kind k, StringRef n = "")
: symbolKind(k), isExternal(true), isCOMDAT(false),
writtenToSymtab(false), pendingArchiveLoad(false), isGCRoot(false),
isRuntimePseudoReloc(false), deferUndefined(false), canInline(true),
isWeak(false), nameSize(n.size()),
nameData(n.empty() ? nullptr : n.data()) {
writtenToSymtab(false), isUsedInRegularObj(false),
pendingArchiveLoad(false), isGCRoot(false), isRuntimePseudoReloc(false),
deferUndefined(false), canInline(true), isWeak(false),
nameSize(n.size()), nameData(n.empty() ? nullptr : n.data()) {
assert((!n.empty() || k <= LastDefinedCOFFKind) &&
"If the name is empty, the Symbol must be a DefinedCOFF.");
}
Expand Down Expand Up @@ -499,8 +499,10 @@ void replaceSymbol(Symbol *s, ArgT &&... arg) {
assert(static_cast<Symbol *>(static_cast<T *>(nullptr)) == nullptr &&
"Not a Symbol");
bool canInline = s->canInline;
bool isUsedInRegularObj = s->isUsedInRegularObj;
new (s) T(std::forward<ArgT>(arg)...);
s->canInline = canInline;
s->isUsedInRegularObj = isUsedInRegularObj;
}
} // namespace coff

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