Include leading attributes in DeclStmt's SourceRange

Differential Revision: https://reviews.llvm.org/D68581

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@375104 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Parse/ParseStmt.cpp

@@ -220,6 +220,8 @@ Retry:
         Decl =
             ParseDeclaration(DeclaratorContext::BlockContext, DeclEnd, Attrs);
       }
+      if (Attrs.Range.getBegin().isValid())
+        DeclStart = Attrs.Range.getBegin();
       return Actions.ActOnDeclStmt(Decl, DeclStart, DeclEnd);
     }
 

test/AST/sourceranges.cpp

@@ -92,6 +92,22 @@ struct map {
 
 }; // namespace std
 
+// CHECK: NamespaceDecl {{.*}} attributed_decl
+namespace attributed_decl {
+  void f() {
+    // CHECK: DeclStmt {{.*}} <line:[[@LINE+1]]:5, col:28>
+    [[maybe_unused]] int i1;
+    // CHECK: DeclStmt {{.*}} <line:[[@LINE+1]]:5, col:35>
+    __attribute__((unused)) int i2;
+    // CHECK: DeclStmt {{.*}} <line:[[@LINE+1]]:5, col:35>
+    int __attribute__((unused)) i3;
+    // CHECK: DeclStmt {{.*}} <<built-in>:{{.*}}, {{.*}}:[[@LINE+1]]:40>
+    __declspec(dllexport) extern int i4;
+    // CHECK: DeclStmt {{.*}} <line:[[@LINE+1]]:5, col:40>
+    extern int __declspec(dllexport) i5;
+  }
+}
+
 #if __cplusplus >= 201703L
 // CHECK-1Z: FunctionDecl {{.*}} construct_with_init_list
 std::map<int, int> construct_with_init_list() {