vendor/clang/clang-r142614

1 files changed, 37 insertions, 0 deletions

diff --git a/test/SemaCXX/warn-dangling-field.cpp b/test/SemaCXX/warn-dangling-field.cpp
new file mode 100644
index 0000000000000..95f8c61ebb77e
--- /dev/null
+++ b/test/SemaCXX/warn-dangling-field.cpp
@@ -0,0 +1,37 @@
+// RUN: %clang_cc1 -fsyntax-only -Wdangling-field -verify %s
+
+struct X {
+  X(int);
+};
+struct Y {
+  operator X*();
+  operator X&();
+};
+
+struct S {
+  int &x, *y;  // expected-note {{reference member declared here}} \
+               // expected-note {{pointer member declared here}}
+  S(int i)
+    : x(i),    // expected-warning {{binding reference member 'x' to stack allocated parameter 'i'}}
+      y(&i) {} // expected-warning {{initializing pointer member 'y' with the stack address of parameter 'i'}}
+  S(int &i) : x(i), y(&i) {} // no-warning: reference parameter
+  S(int *i) : x(*i), y(i) {} // no-warning: pointer parameter
+};
+
+struct S2 {
+  const X &x; // expected-note {{reference member declared here}}
+  S2(int i) : x(i) {} // expected-warning {{binding reference member 'x' to a temporary}}
+};
+
+struct S3 {
+  X &x1, *x2;
+  S3(Y y) : x1(y), x2(y) {} // no-warning: conversion operator
+};
+
+template <typename T> struct S4 {
+  T x; // expected-note {{reference member declared here}}
+  S4(int i) : x(i) {} // expected-warning {{binding reference member 'x' to stack allocated parameter 'i'}}
+};
+
+template struct S4<int>; // no warning from this instantiation
+template struct S4<int&>; // expected-note {{in instantiation}}