1 //===- unittests/Analysis/CFGTest.cpp - CFG tests -------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 #include "clang/ASTMatchers/ASTMatchFinder.h" 11 #include "clang/Analysis/CFG.h" 12 #include "clang/Tooling/Tooling.h" 13 #include "gtest/gtest.h" 14 #include <string> 15 #include <vector> 16 17 namespace clang { 18 namespace analysis { 19 namespace { 20 21 // Constructing a CFG for a range-based for over a dependent type fails (but 22 // should not crash). 23 TEST(CFG, RangeBasedForOverDependentType) { 24 const char *Code = "class Foo;\n" 25 "template <typename T>\n" 26 "void f(const T &Range) {\n" 27 " for (const Foo *TheFoo : Range) {\n" 28 " }\n" 29 "}\n"; 30 31 class CFGCallback : public ast_matchers::MatchFinder::MatchCallback { 32 public: 33 bool SawFunctionBody = false; 34 35 void run(const ast_matchers::MatchFinder::MatchResult &Result) override { 36 const auto *Func = Result.Nodes.getNodeAs<FunctionDecl>("func"); 37 Stmt *Body = Func->getBody(); 38 if (!Body) 39 return; 40 SawFunctionBody = true; 41 std::unique_ptr<CFG> cfg = 42 CFG::buildCFG(nullptr, Body, Result.Context, CFG::BuildOptions()); 43 EXPECT_EQ(nullptr, cfg); 44 } 45 } Callback; 46 47 ast_matchers::MatchFinder Finder; 48 Finder.addMatcher(ast_matchers::functionDecl().bind("func"), &Callback); 49 std::unique_ptr<tooling::FrontendActionFactory> Factory( 50 tooling::newFrontendActionFactory(&Finder)); 51 std::vector<std::string> Args = {"-std=c++11", "-fno-delayed-template-parsing"}; 52 ASSERT_TRUE(tooling::runToolOnCodeWithArgs(Factory->create(), Code, Args)); 53 EXPECT_TRUE(Callback.SawFunctionBody); 54 } 55 56 } // namespace 57 } // namespace analysis 58 } // namespace clang 59
