vasilito
cb424d7448
verify-patch-sanity.py validates every active recipe .patch has internally- consistent hunk line counts — catching the 'malformed patch at line N' failure at commit/CI/preflight time instead of hours into a cook. This cycle hit that class three times (qtwaylandscanner, sddm, xwayland), each only discovered when cookbook tried to apply the patch. Running it across the repo found 29 latent malformed patches (validated against GNU patch: e.g. relibc/P3-sysv-ipc reproduces 'malformed patch at line 22'). They were harmless only because they sit in vendored recipes (baked, not re- applied) — but would fail on any version-bump re-derivation. --fix recounts the hunk headers (body untouched) and repaired all 29. Wired into build-preflight.sh (Phase 1.0D) and redbear-ci.yml, with a unit test (test-patch-sanity.sh). Skips archived/legacy trees and unvalidatable formats (empty placeholders, bare-@@ git hunks).
128 lines
2.9 KiB
C++
128 lines
2.9 KiB
C++
// RUN: %clang_analyze_cc1 -std=c++17 -analyzer-checker=core,deadcode -verify %s
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typedef unsigned long size_t;
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// Machinery required for custom structured bindings decomposition.
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namespace std {
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template <class T> class tuple_size;
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template <class T>
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constexpr size_t tuple_size_v = tuple_size<T>::value;
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template <size_t I, class T> class tuple_element;
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template<class T, T v>
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struct integral_constant {
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static constexpr T value = v;
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typedef T value_type;
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typedef integral_constant type;
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constexpr operator value_type() const noexcept { return value; }
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};
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}
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struct S {
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int a;
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double b;
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S(int a, double b) : a(a), b(b) {};
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};
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S GetNumbers();
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int used_binding() {
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const auto [a, b] = GetNumbers(); // no-warning
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return a + b;
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}
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void no_warning_on_copy(S s) {
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// Copy constructor might have side effects.
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const auto [a, b] = s; // no-warning
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}
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int unused_binding_ignored() {
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const auto [a, b] = GetNumbers(); // expected-warning{{Value stored to '[a, b]' during its initialization is never read}}
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return 0;
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}
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int unused_binding_liveness_required() {
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auto [a2, b2] = GetNumbers(); // expected-warning{{Value stored to '[a2, b2]' during its initialization is never read}}
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a2 = 10;
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b2 = 20;
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return a2 + b2;
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}
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int kill_one_binding() {
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auto [a, b] = GetNumbers(); // no-warning
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a = 100;
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return a + b;
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}
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int kill_one_binding2() {
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auto [a, b] = GetNumbers(); // expected-warning{{Value stored to '[a, b]' during its initialization is never read}}
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a = 100;
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return a;
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}
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void use_const_reference_bindings() {
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const auto &[a, b] = GetNumbers(); // no-warning
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}
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void use_reference_bindings() {
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S s(0, 0);
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auto &[a, b] = s; // no-warning
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a = 200;
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}
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int read_through_pointer() {
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auto [a, b] = GetNumbers(); // no-warning
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int *z = &a;
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return *z;
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}
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auto [globalA, globalB] = GetNumbers(); // no-warning, globals
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auto [globalC, globalD] = GetNumbers(); // no-warning, globals
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void use_globals() {
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globalA = 300; // no-warning
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globalB = 200;
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}
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struct Mytuple {
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int a;
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int b;
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template <size_t N>
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int get() const {
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if constexpr (N == 0) return a;
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else if constexpr (N == 1) return b;
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}
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};
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namespace std {
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template<>
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struct tuple_size<Mytuple>
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: std::integral_constant<size_t, 2> {};
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template<size_t N>
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struct tuple_element<N, Mytuple> {
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using type = int;
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};
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}
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void no_warning_on_tuple_types_copy(Mytuple t) {
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auto [a, b] = t; // no-warning
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}
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Mytuple getMytuple();
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void deconstruct_tuple_types_warning() {
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// The initializers reference the decomposed region, so the warning is not reported
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// FIXME: ideally we want to ignore that the initializers reference the decomposed region, and report the warning,
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// though the first step towards that is to handle DeadCode if the initializer is CXXConstructExpr.
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auto [a, b] = getMytuple(); // no-warning
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}
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int deconstruct_tuple_types_no_warning() {
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auto [a, b] = getMytuple(); // no-warning
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return a + b;
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}
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