[Sema] Detect more array index out of bounds when C++ overloaded operators are used

Differential Revision: https://reviews.llvm.org/D30192

llvm-svn: 296477

1 files changed, 17 insertions, 1 deletions

diff --git a/clang/test/SemaCXX/array-bounds.cpp b/clang/test/SemaCXX/array-bounds.cpp
index 80b3ee42894..8ae92e76130 100644
--- a/clang/test/SemaCXX/array-bounds.cpp
+++ b/clang/test/SemaCXX/array-bounds.cpp
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -verify %s
+// RUN: %clang_cc1 -verify -std=c++11 %s
 
 int foo() {
   int x[2]; // expected-note 4 {{array 'x' declared here}}
@@ -253,3 +253,19 @@ void test_rdar10916006(void)
 	int a[128]; // expected-note {{array 'a' declared here}}
 	a[(unsigned char)'\xA1'] = 1; // expected-warning {{array index 161 is past the end of the array}}
 }
+
+struct P {
+  int a;
+  int b;
+};
+
+void test_struct_array_index() {
+  struct P p[10]; // expected-note {{array 'p' declared here}}
+  p[11] = {0, 1}; // expected-warning {{array index 11 is past the end of the array (which contains 10 elements)}}
+}
+
+int operator+(const struct P &s1, const struct P &s2);
+int test_operator_overload_struct_array_index() {
+  struct P x[10] = {0}; // expected-note {{array 'x' declared here}}
+  return x[1] + x[11]; // expected-warning {{array index 11 is past the end of the array (which contains 10 elements)}}
+}