COMP: avoid Istream/List operator() ambiguity (gcc-4.8.5)

- introduced UList<bool>::operator()(label) as part of bf0b3d8872
  but with gcc-4.8.5 this participates in operator resolution even
  for non-bool lists!!
  Partial revert until this predicate handling is really required.

applications/utilities/surface/surfaceFeatureExtract/surfaceFeatureExtract.C

@@ -429,7 +429,7 @@ int main(int argc, char *argv[])
             // Suboption: "insideBox"
             if (subsetDict.found("insideBox"))
             {
-                treeBoundBox bb(subsetDict.lookup("insideBox")());
+                treeBoundBox bb(subsetDict.lookup("insideBox"));
 
                 Info<< "Subset edges inside box " << bb << endl;
                 features().subsetBox(edgeStat, bb);
@@ -447,7 +447,7 @@ int main(int argc, char *argv[])
             // Suboption: "outsideBox"
             else if (subsetDict.found("outsideBox"))
             {
-                treeBoundBox bb(subsetDict.lookup("outsideBox")());
+                treeBoundBox bb(subsetDict.lookup("outsideBox"));
 
                 Info<< "Exclude edges outside box " << bb << endl;
                 features().excludeBox(edgeStat, bb);
@@ -490,7 +490,7 @@ int main(int argc, char *argv[])
             // Suboption: "plane"
             if (subsetDict.found("plane"))
             {
-                plane cutPlane(subsetDict.lookup("plane")());
+                plane cutPlane(subsetDict.lookup("plane"));
 
                 Info<< "Only include feature edges that intersect the plane"
                     << " with normal " << cutPlane.normal()

src/OpenFOAM/containers/Lists/List/UList.H

@@ -511,16 +511,6 @@ public:
 
     // Special Methods
 
-        //- Test \c bool value at specified position,
-        //- always false for out-of-range access. Same as test().
-        //  \note Predicate definition as per bitSet, HashSet
-        template<class TypeT = T>
-        typename std::enable_if<std::is_same<bool, TypeT>::value, bool>::type
-        inline operator()(const label i) const
-        {
-            return (i >= 0 && i < size_ && v_[i]);
-        }
-
         //- Test \c bool value at specified position,
         //- always false for out-of-range access.
         //  \note Method name compatibility with bitSet, HashSet

src/OpenFOAM/db/IOstreams/Tstreams/ITstream.H

@@ -6,7 +6,7 @@
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
     Copyright (C) 2011-2016 OpenFOAM Foundation
-    Copyright (C) 2017-2021 OpenCFD Ltd.
+    Copyright (C) 2017-2022 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -35,8 +35,8 @@ SourceFiles
 
 \*---------------------------------------------------------------------------*/
 
-#ifndef ITstream_H
+#ifndef Foam_ITstream_H
-#define ITstream_H
+#define Foam_ITstream_H
 
 #include "Istream.H"
 #include "tokenList.H"
@@ -346,6 +346,9 @@ public:
 
     // Member Operators
 
+        //- Use operator() from Istream
+        using Istream::operator();
+
         //- Copy assignment, with rewind()
         void operator=(const ITstream& is);