Added a better diagnostic when using the delete operator with lambdas

Summary:
This adds a new error for missing parentheses around lambdas in delete operators.

```
int main() {
  delete []() { return new int(); }();
}
```

This will result in:

```
test.cpp:2:3: error: '[]' after delete interpreted as 'delete[]'
  delete []() { return new int(); }();
  ^~~~~~~~~
test.cpp:2:9: note: add parentheses around the lambda
  delete []() { return new int(); }();
        ^
        (                          )
```

Reviewers: rsmith

Reviewed By: rsmith

Subscribers: riccibruno, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D36357

llvm-svn: 361119

1 files changed, 3 insertions, 0 deletions

diff --git a/clang/test/FixIt/fixit-cxx0x.cpp b/clang/test/FixIt/fixit-cxx0x.cpp
index 337b5d62bed..70342075a15 100644
--- a/clang/test/FixIt/fixit-cxx0x.cpp
+++ b/clang/test/FixIt/fixit-cxx0x.cpp
@@ -58,6 +58,9 @@ void S2::f(int i) {
   (void)[&, i, i]{ }; // expected-error{{'i' can appear only once in a capture list}}
   (void)[] mutable { }; // expected-error{{lambda requires '()' before 'mutable'}}
   (void)[] -> int { }; // expected-error{{lambda requires '()' before return type}}
+
+  delete []() { return new int; }(); // expected-error{{'[]' after delete interpreted as 'delete[]'}}
+  delete [] { return new int; }(); // expected-error{{'[]' after delete interpreted as 'delete[]'}}
 }
 
 #define bar "bar"