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	}			}

	// Force Sym to be entered in the output. Used for -u or equivalent.			// Force Sym to be entered in the output. Used for -u or equivalent.
	static void handleUndefined(Symbol *sym) {			static void handleUndefined(Symbol *sym) {
	// Since a symbol may not be used inside the program, LTO may			// Since a symbol may not be used inside the program, LTO may
	// eliminate it. Mark the symbol as "used" to prevent it.			// eliminate it. Mark the symbol as "used" to prevent it.
	sym->isUsedInRegularObj = true;			sym->isUsedInRegularObj = true;

				// GNU linkers allow -u foo -ldef -lref. We should not treat it as a backward
				// reference.
				backwardReferences.erase(sym);

	if (sym->isLazy())			if (sym->isLazy())
	sym->fetch();			sym->fetch();
	}			}

	// As an extension to GNU linkers, lld supports a variant of `-u`			// As an extension to GNU linkers, lld supports a variant of `-u`
	// which accepts wildcard patterns. All symbols that match a given			// which accepts wildcard patterns. All symbols that match a given
	// pattern are handled as if they were given by `-u`.			// pattern are handled as if they were given by `-u`.
	static void handleUndefinedGlob(StringRef arg) {			static void handleUndefinedGlob(StringRef arg) {
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lld/test/ELF/warn-backrefs.s

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	## lld fetches the archive while GNU ld resolves the reference to the shared definition.			## lld fetches the archive while GNU ld resolves the reference to the shared definition.
	## Warn because the resolution rules are different.			## Warn because the resolution rules are different.
	# RUN: ld.lld --warn-backrefs %t2.a %t1.o %t2.so -o /dev/null 2>&1 \| FileCheck %s			# RUN: ld.lld --warn-backrefs %t2.a %t1.o %t2.so -o /dev/null 2>&1 \| FileCheck %s

	## This is a limitation. The resolution rules are different but			## This is a limitation. The resolution rules are different but
	## --warn-backrefs does not warn.			## --warn-backrefs does not warn.
	# RUN: ld.lld --fatal-warnings --warn-backrefs %t2.a %t1.o %t2.so %t2.a -o /dev/null			# RUN: ld.lld --fatal-warnings --warn-backrefs %t2.a %t1.o %t2.so %t2.a -o /dev/null

				## In GNU linkers, -u does not make a backward reference.
				# RUN: ld.lld --fatal-warnings -u foo %t2.a %t1.o -o /dev/null

				## In GNU gold, --export-dynamic-symbol does not make a backward reference.
				# RUN: ld.lld --fatal-warnings --export-dynamic-symbol foo %t2.a %t1.o -o /dev/null

				grimarUnsubmitted Done Reply Inline Actions You forgot `--warn-backrefs`. grimar: You forgot `--warn-backrefs`.
	.globl _start, foo			.globl _start, foo
	_start:			_start:
	call foo			call foo