Author: dcoughlin
Date: Wed Nov 25 18:11:23 2015
New Revision: 254114
URL: http://llvm.org/viewvc/llvm-project?rev=254114&view=rev
Log:
[analyzer] Add tests for generalized lambda capture (C++14). NFC.
Add tests demonstrating that the analyzer supports generalized lambda capture.
This
support falls out naturally from the work Gábor Horváth did adding C++11
lambdas to
the analyzer.
Added:
cfe/trunk/test/Analysis/lambdas-generalized-capture.cpp
Added: cfe/trunk/test/Analysis/lambdas-generalized-capture.cpp
URL:
http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Analysis/lambdas-generalized-capture.cpp?rev=254114&view=auto
==============================================================================
--- cfe/trunk/test/Analysis/lambdas-generalized-capture.cpp (added)
+++ cfe/trunk/test/Analysis/lambdas-generalized-capture.cpp Wed Nov 25 18:11:23
2015
@@ -0,0 +1,50 @@
+// RUN: %clang_cc1 -std=c++14 -fsyntax-only -analyze
-analyzer-checker=core,deadcode,debug.ExprInspection -verify %s
+
+int clang_analyzer_eval(int);
+
+void generalizedCapture() {
+ int v = 7;
+ auto lambda = [x=v]() {
+ return x;
+ };
+
+ int result = lambda();
+ clang_analyzer_eval(result == 7); // expected-warning {{TRUE}}
+}
+
+void sideEffectsInGeneralizedCapture() {
+ int v = 7;
+ auto lambda = [x=v++]() {
+ return x;
+ };
+ clang_analyzer_eval(v == 8); // expected-warning {{TRUE}}
+
+ int r1 = lambda();
+ int r2 = lambda();
+ clang_analyzer_eval(r1 == 7); // expected-warning {{TRUE}}
+ clang_analyzer_eval(r2 == 7); // expected-warning {{TRUE}}
+ clang_analyzer_eval(v == 8); // expected-warning {{TRUE}}
+}
+
+int addOne(int p) {
+ return p + 1;
+}
+
+void inliningInGeneralizedCapture() {
+ int v = 7;
+ auto lambda = [x=addOne(v)]() {
+ return x;
+ };
+
+ int result = lambda();
+ clang_analyzer_eval(result == 8); // expected-warning {{TRUE}}
+}
+
+void caseSplitInGeneralizedCapture(bool p) {
+ auto lambda = [x=(p ? 1 : 2)]() {
+ return x;
+ };
+
+ int result = lambda();
+ clang_analyzer_eval(result == 1); // expected-warning {{FALSE}}
expected-warning {{TRUE}}
+}
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