Revert "Fix an invalid check for duplicate option categories."

This reverts commit r200853.

It was causing clang/Analysis/checker-plugins.c to crash.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200858 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 5 insertions, 16 deletions

diff --git a/include/llvm/Support/CommandLine.h b/include/llvm/Support/CommandLine.h
index b29fc87360..515b0bd00f 100644
--- a/include/llvm/Support/CommandLine.h
+++ b/include/llvm/Support/CommandLine.h
@@ -149,8 +149,8 @@ private:
 public:
   OptionCategory(const char *const Name, const char *const Description = 0)
       : Name(Name), Description(Description) { registerCategory(); }
-  const char *getName() const { return Name; }
-  const char *getDescription() const { return Description; }
+  const char *getName() { return Name; }
+  const char *getDescription() { return Description; }
 };
 
 // The general Option Category (used as default category).
diff --git a/lib/Support/CommandLine.cpp b/lib/Support/CommandLine.cpp
index 289bb87433..16db4d6396 100644
--- a/lib/Support/CommandLine.cpp
+++ b/lib/Support/CommandLine.cpp
@@ -125,21 +125,8 @@ static ManagedStatic<OptionCatSet> RegisteredOptionCategories;
 // Initialise the general option category.
 OptionCategory llvm::cl::GeneralCategory("General options");
 
-struct HasName {
-  HasName(StringRef Name) : Name(Name) {}
-  bool operator()(const OptionCategory *Category) const {
-    return Name == Category->getName();
-  }
-  StringRef Name;
-};
-
 void OptionCategory::registerCategory()
 {
-  assert(std::count_if(RegisteredOptionCategories->begin(),
-                       RegisteredOptionCategories->end(),
-                       HasName(getName())) == 0 &&
-         "Duplicate option categories");
-
   RegisteredOptionCategories->insert(this);
 }
 
@@ -1508,7 +1495,9 @@ public:
   // It shall return true if A's name should be lexographically
   // ordered before B's name. It returns false otherwise.
   static bool OptionCategoryCompare(OptionCategory *A, OptionCategory *B) {
-    return strcmp(A->getName(), B->getName()) < 0;
+    int Length = strcmp(A->getName(), B->getName());
+    assert(Length != 0 && "Duplicate option categories");
+    return Length < 0;
   }
 
   // Make sure we inherit our base class's operator=()