97c675d3d4
This reverts commit52aeacfbf5. There isn't full agreement on a path forward yet, but there is agreement that this shouldn't land as-is. See discussion on https://reviews.llvm.org/D105338 Also reverts unreviewed "[clang] Improve `-Wnull-dereference` diag to be more in-line with reality" This reverts commitf4877c78c0. And all the related changes to tests: This reverts commit9a0152799f. This reverts commit3f7c9cc274. This reverts commit329f8197ef. This reverts commitaa9f58cc2c. This reverts commit2df37d5ddd. This reverts commita72a441812.
105 lines
2.1 KiB
C++
105 lines
2.1 KiB
C++
// RUN: %clang_analyze_cc1 -std=c++11 -analyzer-checker=core -analyzer-output=plist-multi-file -o %t.plist -verify -analyzer-config eagerly-assume=false %s
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// RUN: %normalize_plist <%t.plist | diff -ub %S/Inputs/expected-plists/cxx-for-range.cpp.plist -
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extern void work();
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void testLoop() {
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int z[] = {1,2};
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for (int y : z) {
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work();
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work();
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if (y == 2)
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*(volatile int *)0 = 1; // expected-warning {{Dereference of null pointer}}
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work();
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work();
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(void)y;
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}
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*(volatile int *)0 = 1; // no-warning
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}
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class MagicVector {
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public:
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MagicVector();
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using iterator = int *;
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iterator begin() const;
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iterator end() const;
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};
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MagicVector get(bool fail = false) {
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if (fail)
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*(volatile int *)0 = 1; // expected-warning {{Dereference of null pointer}}
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return MagicVector{};
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}
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void testLoopOpaqueCollection() {
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for (int y : get()) {
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work();
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work();
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if (y == 2)
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*(volatile int *)0 = 1; // expected-warning {{Dereference of null pointer}}
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work();
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work();
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(void)y;
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}
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*(volatile int *)0 = 1; // expected-warning {{Dereference of null pointer}}
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}
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class MagicVector2 {
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public:
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MagicVector2();
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class iterator {
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public:
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int operator*() const;
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iterator &operator++();
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bool operator==(const iterator &);
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bool operator!=(const iterator &);
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};
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iterator begin() const;
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iterator end() const;
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};
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MagicVector2 get2() {
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return MagicVector2{};
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}
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void testLoopOpaqueIterator() {
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for (int y : get2()) {
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work();
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work();
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if (y == 2)
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*(volatile int *)0 = 1; // expected-warning {{Dereference of null pointer}}
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work();
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work();
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(void)y;
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}
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*(volatile int *)0 = 1; // expected-warning {{Dereference of null pointer}}
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}
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void testLoopErrorInRange() {
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for (int y : get(true)) { // error inside get()
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work();
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work();
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if (y == 2)
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*(volatile int *)0 = 1; // no-warning
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work();
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work();
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(void)y;
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}
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*(volatile int *)0 = 1; // no-warning
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}
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void testForRangeInit() {
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for (int *arr[3] = {nullptr, nullptr, nullptr}; int *p : arr) // expected-warning {{extension}}
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*p = 1; // expected-warning {{Dereference of null pointer}}
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}
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