Suggest fix-it ':' when '=' used in for-range-declaration

Fix for PR19176. Clang will suggest a fix-it hint for cases like:
  int arr[] = {1, 2, 3, 4};
  for (auto i = arr)
              ^
              :

llvm-svn: 208299

2 files changed, 6 insertions, 2 deletions

diff --git a/clang/include/clang/Basic/DiagnosticParseKinds.td b/clang/include/clang/Basic/DiagnosticParseKinds.td
index 335b6abf134..70e16ceca1c 100644
--- a/clang/include/clang/Basic/DiagnosticParseKinds.td
+++ b/clang/include/clang/Basic/DiagnosticParseKinds.td
@@ -204,6 +204,8 @@ def err_expected_semi_after_attribute_list : Error<
 def err_expected_semi_after_static_assert : Error<
   "expected ';' after static_assert">;
 def err_expected_semi_for : Error<"expected ';' in 'for' statement specifier">;
+def err_single_decl_assign_in_for_range : Error<
+  "range based for statement requires ':' after range declaration">;
 def warn_missing_selector_name : Warning<
   "%0 used as the name of the previous parameter rather than as part "
   "of the selector">,
diff --git a/clang/include/clang/Parse/Parser.h b/clang/include/clang/Parse/Parser.h
index 0b15eb68417..79c65c6db47 100644
--- a/clang/include/clang/Parse/Parser.h
+++ b/clang/include/clang/Parse/Parser.h
@@ -1727,8 +1727,10 @@ private:
   Decl *ParseDeclarationAfterDeclarator(Declarator &D,
                const ParsedTemplateInfo &TemplateInfo = ParsedTemplateInfo());
   bool ParseAsmAttributesAfterDeclarator(Declarator &D);
-  Decl *ParseDeclarationAfterDeclaratorAndAttributes(Declarator &D,
-               const ParsedTemplateInfo &TemplateInfo = ParsedTemplateInfo());
+  Decl *ParseDeclarationAfterDeclaratorAndAttributes(
+      Declarator &D,
+      const ParsedTemplateInfo &TemplateInfo = ParsedTemplateInfo(),
+      ForRangeInit *FRI = nullptr);
   Decl *ParseFunctionStatementBody(Decl *Decl, ParseScope &BodyScope);
   Decl *ParseFunctionTryBlock(Decl *Decl, ParseScope &BodyScope);