Fix iterator invalidation problem
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9272 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/bugpoint/CodeGeneratorBug.cpp b/tools/bugpoint/CodeGeneratorBug.cpp
index 10f544a..0aea9b0 100644
--- a/tools/bugpoint/CodeGeneratorBug.cpp
+++ b/tools/bugpoint/CodeGeneratorBug.cpp
@@ -144,8 +144,8 @@
ResolverArgs.push_back(GEP);
// Insert code at the beginning of the function
- for (Value::use_iterator i=F->use_begin(), e=F->use_end(); i!=e; ++i) {
- if (Instruction* Inst = dyn_cast<Instruction>(*i)) {
+ while (!F->use_empty())
+ if (Instruction *Inst = dyn_cast<Instruction>(F->use_back())) {
// call resolver(GetElementPtr...)
CallInst *resolve = new CallInst(resolverFunc, ResolverArgs,
"resolver", Inst);
@@ -161,7 +161,6 @@
std::cerr << "Non-instruction is using an external function!\n";
abort();
}
- }
}
}
}