70 lines
2.2 KiB
C++
70 lines
2.2 KiB
C++
// RUN: %clang_analyze_cc1 %s -analyzer-checker=core.uninitialized.NewArraySize -analyzer-output=text -verify
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#include "Inputs/system-header-simulator-cxx.h"
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void checkUndefinedElmenetCountValue() {
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int n;
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// expected-note@-1{{'n' declared without an initial value}}
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int *arr = new int[n]; // expected-warning{{Element count in new[] is a garbage value}}
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// expected-note@-1{{Element count in new[] is a garbage value}}
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}
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void checkUndefinedElmenetCountMultiDimensionalValue() {
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int n;
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// expected-note@-1{{'n' declared without an initial value}}
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auto *arr = new int[n][5]; // expected-warning{{Element count in new[] is a garbage value}}
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// expected-note@-1{{Element count in new[] is a garbage value}}
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}
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void checkUndefinedElmenetCountReference() {
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int n;
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// expected-note@-1{{'n' declared without an initial value}}
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int &ref = n;
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// expected-note@-1{{'ref' initialized here}}
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int *arr = new int[ref]; // expected-warning{{Element count in new[] is a garbage value}}
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// expected-note@-1{{Element count in new[] is a garbage value}}
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}
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void checkUndefinedElmenetCountMultiDimensionalReference() {
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int n;
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// expected-note@-1{{'n' declared without an initial value}}
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int &ref = n;
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// expected-note@-1{{'ref' initialized here}}
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auto *arr = new int[ref][5]; // expected-warning{{Element count in new[] is a garbage value}}
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// expected-note@-1{{Element count in new[] is a garbage value}}
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}
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int foo() {
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int n;
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return n;
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}
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void checkUndefinedElmenetCountFunction() {
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int *arr = new int[foo()]; // expected-warning{{Element count in new[] is a garbage value}}
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// expected-note@-1{{Element count in new[] is a garbage value}}
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}
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void checkUndefinedElmenetCountMultiDimensionalFunction() {
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auto *arr = new int[foo()][5]; // expected-warning{{Element count in new[] is a garbage value}}
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// expected-note@-1{{Element count in new[] is a garbage value}}
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}
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void *malloc(size_t);
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void checkUndefinedPlacementElementCount() {
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int n;
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// expected-note@-1{{'n' declared without an initial value}}
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void *buffer = malloc(sizeof(std::string) * 10);
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std::string *p =
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::new (buffer) std::string[n]; // expected-warning{{Element count in new[] is a garbage value}}
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// expected-note@-1{{Element count in new[] is a garbage value}}
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}
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