59 lines
1.9 KiB
C++
59 lines
1.9 KiB
C++
//===- unittests/Analysis/CFGTest.cpp - CFG tests -------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/ASTMatchers/ASTMatchFinder.h"
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#include "clang/Analysis/CFG.h"
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#include "clang/Tooling/Tooling.h"
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#include "gtest/gtest.h"
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#include <string>
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#include <vector>
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namespace clang {
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namespace analysis {
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namespace {
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// Constructing a CFG for a range-based for over a dependent type fails (but
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// should not crash).
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TEST(CFG, RangeBasedForOverDependentType) {
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const char *Code = "class Foo;\n"
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"template <typename T>\n"
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"void f(const T &Range) {\n"
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" for (const Foo *TheFoo : Range) {\n"
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" }\n"
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"}\n";
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class CFGCallback : public ast_matchers::MatchFinder::MatchCallback {
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public:
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bool SawFunctionBody = false;
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void run(const ast_matchers::MatchFinder::MatchResult &Result) override {
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const auto *Func = Result.Nodes.getNodeAs<FunctionDecl>("func");
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Stmt *Body = Func->getBody();
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if (!Body)
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return;
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SawFunctionBody = true;
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std::unique_ptr<CFG> cfg =
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CFG::buildCFG(nullptr, Body, Result.Context, CFG::BuildOptions());
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EXPECT_EQ(nullptr, cfg);
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}
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} Callback;
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ast_matchers::MatchFinder Finder;
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Finder.addMatcher(ast_matchers::functionDecl().bind("func"), &Callback);
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std::unique_ptr<tooling::FrontendActionFactory> Factory(
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tooling::newFrontendActionFactory(&Finder));
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std::vector<std::string> Args = {"-std=c++11", "-fno-delayed-template-parsing"};
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ASSERT_TRUE(tooling::runToolOnCodeWithArgs(Factory->create(), Code, Args));
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EXPECT_TRUE(Callback.SawFunctionBody);
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}
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} // namespace
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} // namespace analysis
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} // namespace clang
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