4 files changed, 8 insertions, 7 deletions
diff --git a/include/llvm/ADT/SmallPtrSet.h b/include/llvm/ADT/SmallPtrSet.h
index e165d14557..8b85a67afb 100644
--- a/include/llvm/ADT/SmallPtrSet.h
+++ b/include/llvm/ADT/SmallPtrSet.h
@@ -57,7 +57,7 @@ protected:
   // Helper to copy construct a SmallPtrSet.
   SmallPtrSetImpl(const SmallPtrSetImpl& that);
 public:
-  SmallPtrSetImpl(unsigned SmallSize) {
+  explicit SmallPtrSetImpl(unsigned SmallSize) {
     assert(SmallSize && (SmallSize & (SmallSize-1)) == 0 &&
            "Initial size must be a power of two!");
     CurArray = &SmallArray[0];
@@ -140,7 +140,7 @@ class SmallPtrSetIteratorImpl {
 protected:
   const void *const *Bucket;
 public:
-  SmallPtrSetIteratorImpl(const void *const *BP) : Bucket(BP) {
+  explicit SmallPtrSetIteratorImpl(const void *const *BP) : Bucket(BP) {
     AdvanceIfNotValid();
   }
   
@@ -166,7 +166,8 @@ protected:
 template<typename PtrTy>
 class SmallPtrSetIterator : public SmallPtrSetIteratorImpl {
 public:
-  SmallPtrSetIterator(const void *const *BP) : SmallPtrSetIteratorImpl(BP) {}
+  explicit SmallPtrSetIterator(const void *const *BP)
+    : SmallPtrSetIteratorImpl(BP) {}
 
   // Most methods provided by baseclass.
   
diff --git a/include/llvm/Analysis/Dominators.h b/include/llvm/Analysis/Dominators.h
index 80088fd6c6..8d333de6b0 100644
--- a/include/llvm/Analysis/Dominators.h
+++ b/include/llvm/Analysis/Dominators.h
@@ -48,7 +48,7 @@ class DominatorBase {
 protected:
   std::vector<NodeT*> Roots;
   const bool IsPostDominators;
-  inline DominatorBase(bool isPostDom) : 
+  inline explicit DominatorBase(bool isPostDom) :
     Roots(), IsPostDominators(isPostDom) {}
 public:
 
@@ -294,7 +294,7 @@ protected:
   }
 
 public:
-  DominatorTreeBase(bool isPostDom) 
+  explicit DominatorTreeBase(bool isPostDom)
     : DominatorBase<NodeT>(isPostDom), DFSInfoValid(false), SlowQueries(0) {}
   virtual ~DominatorTreeBase() { reset(); }
 
diff --git a/include/llvm/ModuleProvider.h b/include/llvm/ModuleProvider.h
index 17ff6b242d..65bcc763f1 100644
--- a/include/llvm/ModuleProvider.h
+++ b/include/llvm/ModuleProvider.h
@@ -74,7 +74,7 @@ public:
 /// if we just have a Module.  Note that the ModuleProvider takes ownership of
 /// the Module specified.
 struct ExistingModuleProvider : public ModuleProvider {
-  ExistingModuleProvider(Module *M) {
+  explicit ExistingModuleProvider(Module *M) {
     TheModule = M;
   }
   bool materializeFunction(Function *F, std::string *ErrInfo = 0) {
diff --git a/include/llvm/Use.h b/include/llvm/Use.h
index c81a903e8b..48384f29ac 100644
--- a/include/llvm/Use.h
+++ b/include/llvm/Use.h
@@ -107,7 +107,7 @@ class value_use_iterator : public forward_iterator<UserTy*, ptrdiff_t> {
   typedef value_use_iterator<UserTy> _Self;
 
   Use *U;
-  value_use_iterator(Use *u) : U(u) {}
+  explicit value_use_iterator(Use *u) : U(u) {}
   friend class Value;
 public:
   typedef typename super::reference reference;