fix(demangle): Suppresses c++ warnings on older GCCs

symbolic-demangle/build.rs

@@ -18,7 +18,7 @@ fn main() {
                 "vendor/swift/lib/Demangling/Remangler.cpp",
             ])
             .flag_if_supported("-std=c++17")
-            .flag_if_supported("-mmacosx-version-min=11.0.0")
+            .flag_if_supported("-fpermissive")
             .flag_if_supported("-Wno-changes-meaning")
             .flag("-DLLVM_DISABLE_ABI_BREAKING_CHECKS_ENFORCING=1")
             .flag("-DSWIFT_STDLIB_HAS_TYPE_PRINTING=1")

symbolic-demangle/vendor/swift/include/swift/Demangling/Demangler.h

@@ -32,7 +32,7 @@ namespace Demangle {
 SWIFT_BEGIN_INLINE_NAMESPACE
 
 class CharVector;
-  
+
 /// The allocator for demangling nodes and other demangling-internal stuff.
 ///
 /// It implements a simple bump-pointer allocator.
@@ -49,7 +49,7 @@ class NodeFactory {
     Slab *Previous;
     // Tail allocated memory starts here.
   };
-  
+
   /// The head of the single-linked slab list.
   Slab *CurrentSlab = nullptr;
 
@@ -131,9 +131,9 @@ class NodeFactory {
       BorrowedFrom->isBorrowed = false;
     }
   }
-  
+
   virtual void clear();
-  
+
   /// Allocates an object of type T or an array of objects of type T.
   template<typename T> T *Allocate(size_t NumObjects = 1) {
     assert(!isBorrowed);
@@ -266,7 +266,7 @@ class NodeFactory {
   /// The \p Text string is already allocated with the Factory and therefore
   /// it is _not_ copied.
   NodePointer createNode(Node::Kind K, const CharVector &Text);
-  
+
   /// Creates a node of kind \p K with a \p Text payload, which must be a C
   /// string literal.
   ///
@@ -301,7 +301,7 @@ template<typename T> class Vector {
     NumElems = 0;
     Capacity = InitialCapacity;
   }
-  
+
   void free() {
     Capacity = 0;
     Elems = 0;
@@ -313,7 +313,7 @@ template<typename T> class Vector {
 
   iterator begin() { return Elems; }
   iterator end() { return Elems + NumElems; }
-  
+
   T &operator[](size_t Idx) {
     assert(Idx < NumElems);
     return Elems[Idx];
@@ -323,7 +323,7 @@ template<typename T> class Vector {
     assert(Idx < NumElems);
     return Elems[Idx];
   }
-  
+
   size_t size() const { return NumElems; }
 
   bool empty() const { return NumElems == 0; }
@@ -411,7 +411,7 @@ class Demangler : public NodeFactory {
   static const int MaxNumWords = 26;
   StringRef Words[MaxNumWords];
   int NumWords = 0;
-  
+
   std::function<SymbolicReferenceResolver_t> SymbolicReferenceResolver;
 
   bool nextIf(StringRef str) {
@@ -476,7 +476,7 @@ class Demangler : public NodeFactory {
     Node::Kind NdKind = NodeStack.back()->getKind();
     if (!pred(NdKind))
       return nullptr;
-    
+
     return popNode();
   }
 
@@ -490,14 +490,14 @@ class Demangler : public NodeFactory {
     StringRef Text;
     size_t Pos;
     std::function<SymbolicReferenceResolver_t> SymbolicReferenceResolver;
-    
+
   public:
     DemangleInitRAII(Demangler &Dem, StringRef MangledName,
          std::function<SymbolicReferenceResolver_t> SymbolicReferenceResolver);
     ~DemangleInitRAII();
   };
   friend DemangleInitRAII;
-  
+
   void addSubstitution(NodePointer Nd) {
     if (Nd) {
       Substitutions.push_back(Nd, *this);
@@ -641,7 +641,7 @@ class Demangler : public NodeFactory {
 
 public:
   Demangler() {}
-  
+
   void clear() override;
 
   /// Demangle the given symbol and return the parse tree.