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