Add a fix-it and better error recovery for improperly nested namespaces. This will give a better error message for cases such as "namespace foo::bar::baz {}" and a suggested fix-it of "namespace foo { namespace bar { namespace baz {} } }"

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@132138 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 24 insertions, 0 deletions

diff --git a/test/Parser/nested-namespaces-recovery.cpp b/test/Parser/nested-namespaces-recovery.cpp
new file mode 100644
index 0000000000..d45938bb3e
--- /dev/null
+++ b/test/Parser/nested-namespaces-recovery.cpp
@@ -0,0 +1,24 @@
+// RUN: cp %s %t
+// RUN: %clang_cc1 -fsyntax-only -verify %s
+// RUN: not %clang_cc1 -x c++ -fixit %t
+// RUN: %clang_cc1 -x c++ %t
+
+namespace foo1::foo2::foo3 { // expected-error {{nested namespace definition must define each namespace separately}}
+  int foo(int x) { return x; }
+}
+
+int foo(int x) {
+  return foo1::foo2::foo3::foo(x);
+}
+
+namespace bar1 {
+  namespace bar2 {
+    namespace bar3 {
+      int bar(int x) { return x; }
+    }
+  }
+}
+
+int bar(int x) {
+  return bar1::bar2::bar3::bar(x);
+}