fix infinite recursion if a global's initializer references the global
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51617 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/lto2/LTOModule.cpp b/tools/lto2/LTOModule.cpp
index c4bee71..eb0a094 100644
--- a/tools/lto2/LTOModule.cpp
+++ b/tools/lto2/LTOModule.cpp
@@ -161,7 +161,7 @@
addDefinedSymbol(v, mangler, false);
// add external symbols referenced by this data.
- for (unsigned count = 0, total = v->getNumOperands();\
+ for (unsigned count = 0, total = v->getNumOperands();
count != total; ++count) {
findExternalRefs(v->getOperand(count), mangler);
}
@@ -234,8 +234,13 @@
if (GlobalValue* gv = dyn_cast<GlobalValue>(value)) {
if ( !gv->hasExternalLinkage() )
addPotentialUndefinedSymbol(gv, mangler);
+ // If this is a variable definition, do not recursively process
+ // initializer. It might contain a reference to this variable
+ // and cause an infinite loop. The initializer will be
+ // processed in addDefinedDataSymbol().
+ return;
}
-
+
// GlobalValue, even with InternalLinkage type, may have operands with
// ExternalLinkage type. Do not ignore these operands.
if (Constant* c = dyn_cast<Constant>(value)) {