Add missing const on the policy interface return type

p4lang · Feb 13, 2024 · 0902ee2 · 0902ee2
1 parent b883c3d
commit 0902ee2
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Showing 2 changed files with 2 additions and 2 deletions.
diff --git a/frontends/common/constantFolding.cpp b/frontends/common/constantFolding.cpp
@@ -87,7 +87,7 @@ const IR::Expression *DoConstantFolding::getConstant(const IR::Expression *expr)
 }
 
 const IR::Node *DoConstantFolding::postorder(IR::PathExpression *e) {
-    if (auto *r = policy->hook(*this, e)) return r;
+    if (const auto *r = policy->hook(*this, e)) return r;
     if (refMap == nullptr || assignmentTarget) return e;
     auto decl = refMap->getDeclaration(e->path);
     if (decl == nullptr) return e;

diff --git a/frontends/common/constantFolding.h b/frontends/common/constantFolding.h
@@ -32,7 +32,7 @@ namespace P4 {
 class ConstantFoldingPolicy {
  public:
     /// The default hook does not modify anything.
-    virtual IR::Node *hook(Visitor &, IR::PathExpression *) { return nullptr; }
+    virtual const IR::Node *hook(Visitor &, IR::PathExpression *) { return nullptr; }
 };
 
 /** @brief statically evaluates many constant expressions.