Comment parsing: recognize \param ... on function templates with variadic

parameters

Patch by Joe Ranieri.

llvm-svn: 204235

2 files changed, 24 insertions, 1 deletions

diff --git a/clang/lib/AST/CommentSema.cpp b/clang/lib/AST/CommentSema.cpp
index 0ae00820fde..e51f8781c1b 100644
--- a/clang/lib/AST/CommentSema.cpp
+++ b/clang/lib/AST/CommentSema.cpp
@@ -792,11 +792,14 @@ bool Sema::isAnyFunctionDecl() {
 }
 
 bool Sema::isFunctionOrMethodVariadic() {
-  if (!isAnyFunctionDecl() && !isObjCMethodDecl())
+  if (!isAnyFunctionDecl() && !isObjCMethodDecl() && !isFunctionTemplateDecl())
     return false;
   if (const FunctionDecl *FD =
         dyn_cast<FunctionDecl>(ThisDeclInfo->CurrentDecl))
     return FD->isVariadic();
+  if (const FunctionTemplateDecl *FTD =
+        dyn_cast<FunctionTemplateDecl>(ThisDeclInfo->CurrentDecl))
+    return FTD->getTemplatedDecl()->isVariadic();
   if (const ObjCMethodDecl *MD =
         dyn_cast<ObjCMethodDecl>(ThisDeclInfo->CurrentDecl))
     return MD->isVariadic();
diff --git a/clang/test/Sema/warn-documentation.cpp b/clang/test/Sema/warn-documentation.cpp
index ad7ab181a78..ed25d949f55 100644
--- a/clang/test/Sema/warn-documentation.cpp
+++ b/clang/test/Sema/warn-documentation.cpp
@@ -371,6 +371,26 @@ int test_vararg_param3(int aaa);
 int test_vararg_param4();
 
 
+/// \param aaa Aaa
+/// \param ... Vararg
+template<typename T>
+int test_template_vararg_param1(int aaa, ...);
+
+/// \param ... Vararg
+template<typename T>
+int test_template_vararg_param2(...);
+
+// expected-warning@+1 {{parameter '...' not found in the function declaration}} expected-note@+1 {{did you mean 'aaa'?}}
+/// \param ... Vararg
+template<typename T>
+int test_template_vararg_param3(int aaa);
+
+// expected-warning@+1 {{parameter '...' not found in the function declaration}}
+/// \param ... Vararg
+template<typename T>
+int test_template_vararg_param4();
+
+
 // expected-warning@+1 {{'\tparam' command used in a comment that is not attached to a template declaration}}
 /// \tparam T Aaa
 int test_tparam1;