From 1d4058322dfa18210cfb51d9b53139bdbea7c242 Mon Sep 17 00:00:00 2001
From: Devin Coughlin <dcoughlin@apple.com>
Date: Sun, 15 Nov 2015 17:48:22 +0000
Subject: [analyzer] Handle calling ObjC super method from inside C++ lambda.

When calling a ObjC method on super from inside a C++ lambda, look at the
captures to find "self". This mirrors how the analyzer handles calling super in
an ObjC block and fixes an assertion failure.

rdar://problem/23550077

llvm-svn: 253176
---
 clang/test/Analysis/lambdas.mm | 46 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 46 insertions(+)
 create mode 100644 clang/test/Analysis/lambdas.mm

(limited to 'clang/test/Analysis/lambdas.mm')

diff --git a/clang/test/Analysis/lambdas.mm b/clang/test/Analysis/lambdas.mm
new file mode 100644
index 00000000000..f2cd5aefffe
--- /dev/null
+++ b/clang/test/Analysis/lambdas.mm
@@ -0,0 +1,46 @@
+// RUN: %clang_cc1 -std=c++11 -fsyntax-only -Wno-objc-root-class -analyze -analyzer-checker=core,debug.ExprInspection -analyzer-config inline-lambdas=true -verify %s
+
+int clang_analyzer_eval(int);
+
+@interface Super
+- (void)superMethod;
+@end
+
+@interface Sub : Super {
+  int _ivar1;
+  int _ivar2;
+}
+@end
+
+
+@implementation Sub
+- (void)callMethodOnSuperInCXXLambda; {
+  // Explicit capture.
+  [self]() {
+    [super superMethod];
+  }();
+
+  // Implicit capture.
+  [=]() {
+    [super superMethod];
+  }();
+}
+
+- (void)swapIvars {
+  int tmp = _ivar1;
+  _ivar1 = _ivar2;
+  _ivar2 = tmp;
+}
+
+- (void)callMethodOnSelfInCXXLambda; {
+  _ivar1 = 7;
+  _ivar2 = 8;
+  [self]() {
+    [self swapIvars];
+  }();
+
+  clang_analyzer_eval(_ivar1 == 8); // expected-warning{{TRUE}}
+  clang_analyzer_eval(_ivar2 == 7); // expected-warning{{TRUE}}
+}
+
+@end
-- 
cgit v1.2.3