[STLExtras] Make const the * operator for mapped_iterator.

Summary:
The current non-const * operator shadows the const operator in
iterator_adaptor_base.

Reviewers: mehdi_amini, rriddle!, dblaikie, timshen

Subscribers: dexonsmith, jpienaar, burmako, shauheen, antiagainst, nicolasvasilache, arpith-jacob, mgester, lucyrfox, liufengdb, Joonsoo, grosul1, frgossen, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D78073

diff --git a/llvm/include/llvm/ADT/STLExtras.h b/llvm/include/llvm/ADT/STLExtras.h
index 529219e..215bc5a 100644 (file)
--- a/llvm/include/llvm/ADT/STLExtras.h
+++ b/llvm/include/llvm/ADT/STLExtras.h
@@ -214,7 +214,7 @@ public:
 
   ItTy getCurrent() { return this->I; }
 
-  FuncReturnTy operator*() { return F(*this->I); }
+  FuncReturnTy operator*() const { return F(*this->I); }
 
 private:
   FuncTy F;

diff --git a/mlir/include/mlir/IR/Attributes.h b/mlir/include/mlir/IR/Attributes.h
index e71359e..51b6edf 100644 (file)
--- a/mlir/include/mlir/IR/Attributes.h
+++ b/mlir/include/mlir/IR/Attributes.h
@@ -228,7 +228,7 @@ private:
     explicit attr_value_iterator(ArrayAttr::iterator it)
         : llvm::mapped_iterator<ArrayAttr::iterator, AttrTy (*)(Attribute)>(
               it, [](Attribute attr) { return attr.cast<AttrTy>(); }) {}
-    AttrTy operator*() { return (*this->I).template cast<AttrTy>(); }
+    AttrTy operator*() const { return (*this->I).template cast<AttrTy>(); }
   };
 
 public: