c0773ab6a1
Summary: Added a new category of checkers for non-determinism. Added a checker for non-determinism caused due to sorting containers with pointer-like elements. Reviewers: NoQ, george.karpenkov, whisperity, Szelethus Reviewed By: NoQ, Szelethus Subscribers: Charusso, baloghadamsoftware, jdoerfert, donat.nagy, dkrupp, martong, dblaikie, MTC, Szelethus, mgorny, xazax.hun, szepet, rnkovacs, a.sidorin, mikhail.ramalho, cfe-commits Tags: #clang Differential Revision: https://reviews.llvm.org/D50488 llvm-svn: 355720
36 lines
3.0 KiB
C++
36 lines
3.0 KiB
C++
// RUN: %clang_analyze_cc1 -analyzer-checker=core,alpha.nondeterminism.PointerSorting %s -analyzer-output=text -verify
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#include "Inputs/system-header-simulator-cxx.h"
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bool f (int x) { return true; }
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bool g (int *x) { return true; }
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void PointerSorting() {
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int a = 1, b = 2, c = 3;
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std::vector<int> V1 = {a, b};
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std::vector<int *> V2 = {&a, &b};
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std::is_sorted(V1.begin(), V1.end()); // no-warning
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std::nth_element(V1.begin(), V1.begin() + 1, V1.end()); // no-warning
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std::partial_sort(V1.begin(), V1.begin() + 1, V1.end()); // no-warning
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std::sort(V1.begin(), V1.end()); // no-warning
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std::stable_sort(V1.begin(), V1.end()); // no-warning
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std::partition(V1.begin(), V1.end(), f); // no-warning
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std::stable_partition(V1.begin(), V1.end(), g); // no-warning
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std::is_sorted(V2.begin(), V2.end()); // expected-warning {{Sorting pointer-like elements can result in non-deterministic ordering}} [alpha.nondeterminism.PointerSorting]
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// expected-note@-1 {{Sorting pointer-like elements can result in non-deterministic ordering}} [alpha.nondeterminism.PointerSorting]
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std::nth_element(V2.begin(), V2.begin() + 1, V2.end()); // expected-warning {{Sorting pointer-like elements can result in non-deterministic ordering}} [alpha.nondeterminism.PointerSorting]
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// expected-note@-1 {{Sorting pointer-like elements can result in non-deterministic ordering}} [alpha.nondeterminism.PointerSorting]
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std::partial_sort(V2.begin(), V2.begin() + 1, V2.end()); // expected-warning {{Sorting pointer-like elements can result in non-deterministic ordering}} [alpha.nondeterminism.PointerSorting]
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// expected-note@-1 {{Sorting pointer-like elements can result in non-deterministic ordering}} [alpha.nondeterminism.PointerSorting]
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std::sort(V2.begin(), V2.end()); // expected-warning {{Sorting pointer-like elements can result in non-deterministic ordering}} [alpha.nondeterminism.PointerSorting]
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// expected-note@-1 {{Sorting pointer-like elements can result in non-deterministic ordering}} [alpha.nondeterminism.PointerSorting]
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std::stable_sort(V2.begin(), V2.end()); // expected-warning {{Sorting pointer-like elements can result in non-deterministic ordering}} [alpha.nondeterminism.PointerSorting]
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// expected-note@-1 {{Sorting pointer-like elements can result in non-deterministic ordering}} [alpha.nondeterminism.PointerSorting]
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std::partition(V2.begin(), V2.end(), f); // expected-warning {{Sorting pointer-like elements can result in non-deterministic ordering}} [alpha.nondeterminism.PointerSorting]
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// expected-note@-1 {{Sorting pointer-like elements can result in non-deterministic ordering}} [alpha.nondeterminism.PointerSorting]
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std::stable_partition(V2.begin(), V2.end(), g); // expected-warning {{Sorting pointer-like elements can result in non-deterministic ordering}} [alpha.nondeterminism.PointerSorting]
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// expected-note@-1 {{Sorting pointer-like elements can result in non-deterministic ordering}} [alpha.nondeterminism.PointerSorting]
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}
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