DeclTest.cpp source code [clang_source_code/unittests/AST/DeclTest.cpp]

1	//===- unittests/AST/DeclTest.cpp --- Declaration tests -------------------===//
2	//
3	// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4	// See https://llvm.org/LICENSE.txt for license information.
5	// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6	//
7	//===----------------------------------------------------------------------===//
8	//
9	// Unit tests for Decl nodes in the AST.
10	//
11	//===----------------------------------------------------------------------===//
12
13	#include "clang/ASTMatchers/ASTMatchFinder.h"
14	#include "clang/Tooling/Tooling.h"
15	#include "gtest/gtest.h"
16
17	using namespace clang::ast_matchers;
18	using namespace clang::tooling;
19
20	TEST(Decl, CleansUpAPValues) {
21	MatchFinder Finder;
22	std::unique_ptr<FrontendActionFactory> Factory(
23	newFrontendActionFactory(&Finder));
24
25	// This is a regression test for a memory leak in APValues for structs that
26	// allocate memory. This test only fails if run under valgrind with full leak
27	// checking enabled.
28	std::vector<std::string> Args(1, "-std=c++11");
29	Args.push_back("-fno-ms-extensions");
30	ASSERT_TRUE(runToolOnCodeWithArgs(
31	Factory->create(),
32	"struct X { int a; }; constexpr X x = { 42 };"
33	"union Y { constexpr Y(int a) : a(a) {} int a; }; constexpr Y y = { 42 };"
34	"constexpr int z[2] = { 42, 43 };"
35	"constexpr int __attribute__((vector_size(16))) v1 = {};"
36	"\n#ifdef __SIZEOF_INT128__\n"
37	"constexpr __uint128_t large_int = 0xffffffffffffffff;"
38	"constexpr __uint128_t small_int = 1;"
39	"\n#endif\n"
40	"constexpr double d1 = 42.42;"
41	"constexpr long double d2 = 42.42;"
42	"constexpr _Complex long double c1 = 42.0i;"
43	"constexpr _Complex long double c2 = 42.0;"
44	"template<int N> struct A : A<N-1> {};"
45	"template<> struct A<0> { int n; }; A<50> a;"
46	"constexpr int &r = a.n;"
47	"constexpr int A<50>::*p = &A<50>::n;"
48	"void f() { foo: bar: constexpr int k = __builtin_constant_p(0) ?"
49	" (char)&&foo - (char)&&bar : 0; }",
50	Args));
51
52	// FIXME: Once this test starts breaking we can test APValue::needsCleanup
53	// for ComplexInt.
54	ASSERT_FALSE(runToolOnCodeWithArgs(
55	Factory->create(),
56	"constexpr _Complex __uint128_t c = 0xffffffffffffffff;",
57	Args));
58	}
59

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