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// RUN: %clang_cc1 -std=c++20 -Wunsafe-buffer-usage -fsafe-buffer-usage-suggestions -verify %s
void bar(int * param) {}
void foo1a() {
int *r = new int[7];
int *p = new int[4]; // expected-warning{{'p' is an unsafe pointer used for buffer access}}
p = r;
int tmp = p[9]; // expected-note{{used in buffer access here}}
int *q;
q = r; // FIXME: we do not fix `q = r` here as the `.data()` fix-it is not generally correct
}
void uuc_if_body() {
int *r = new int[7];
int *p = new int[4]; // expected-warning{{'p' is an unsafe pointer used for buffer access}} // expected-note{{change type of 'p' to 'std::span' to preserve bounds information, and change 'r' to 'std::span' to propagate bounds information between them}}
if (true)
p = r;
p[5] = 4; // expected-note{{used in buffer access here}}
}
void uuc_if_body1(bool flag) {
int *r = new int[7];
int *p = new int[4]; // expected-warning{{'p' is an unsafe pointer used for buffer access}} // expected-note{{change type of 'p' to 'std::span' to preserve bounds information, and change 'r' to 'std::span' to propagate bounds information between them}}
if (flag) {
p = r;
}
p[5] = 4; // expected-note{{used in buffer access here}}
}
void uuc_if_body2(bool flag) {
int *r = new int[7];
int *p = new int[4]; // expected-warning{{'p' is an unsafe pointer used for buffer access}} // expected-note{{change type of 'p' to 'std::span' to preserve bounds information, and change 'r' to 'std::span' to propagate bounds information between them}}
if (flag) {
} else {
p = r;
}
p[5] = 4; // expected-note{{used in buffer access here}}
}
void uuc_if_body2_ptr_init(bool flag) {
int *r = new int[7];
if (flag) {
} else {
int* p = r; // expected-warning{{'p' is an unsafe pointer used for buffer access}} // expected-note{{change type of 'p' to 'std::span' to preserve bounds information, and change 'r' to 'std::span' to propagate bounds information between them}}
p[5] = 4; // expected-note{{used in buffer access here}}
}
}
void uuc_if_cond_no_unsafe_op() {
int *r = new int[7];
int *p = new int[4];
if ((p = r)) {
int x = 0;
}
}
void uuc_if_cond_no_unsafe_op1() {
int *r = new int[7];
int *p = new int[4];
if (true) {
int x = 0;
} else if ((p = r))
int y = 10;
}
void uuc_if_cond_unsafe_op() {
int *r = new int[7];
int *p = new int[4]; //expected-warning{{'p' is an unsafe pointer used for buffer access}}
if ((p = r)) {
p[3] = 2; // expected-note{{used in buffer access here}}
}
}
void uuc_if_cond_unsafe_op1() {
int *r = new int[7]; // expected-warning{{'r' is an unsafe pointer used for buffer access}}
int *p = new int[4];
if ((p = r)) {
r[3] = 2; // expected-note{{used in buffer access here}}
}
}
void uuc_if_cond_unsafe_op2() {
int *r = new int[7]; // expected-warning{{'r' is an unsafe pointer used for buffer access}}
int *p = new int[4]; // expected-warning{{'p' is an unsafe pointer used for buffer access}}
if ((p = r)) {
r[3] = 2; // expected-note{{used in buffer access here}}
}
p[4] = 6; // expected-note{{used in buffer access here}}
}
void uuc_call1() {
int *w = new int[4]; // expected-warning{{'w' is an unsafe pointer used for buffer access}}
int *y = new int[4];
bar(w = y);
w[5] = 0; // expected-note{{used in buffer access here}}
}
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