102 lines
3.4 KiB
C++
102 lines
3.4 KiB
C++
// RUN: %clang_cc1 -std=c++20 -Wunsafe-buffer-usage \
|
|
// RUN: -fsafe-buffer-usage-suggestions \
|
|
// RUN: -Wno-unused-value -verify %s
|
|
|
|
void basic(int * x) { // expected-warning{{'x' is an unsafe pointer used for buffer access}}
|
|
int *p1 = new int[10]; // not to warn
|
|
int *p2 = new int[10]; // expected-warning{{'p2' is an unsafe pointer used for buffer access}}
|
|
|
|
#pragma clang unsafe_buffer_usage begin
|
|
p1[5]; // not to warn
|
|
|
|
#define _INCLUDE_NO_WARN
|
|
#include "warn-unsafe-buffer-usage-pragma.h" // increment p1 in header
|
|
|
|
int *p3 = new int[10]; // expected-warning{{'p3' is an unsafe pointer used for buffer access}}
|
|
|
|
#pragma clang unsafe_buffer_usage end
|
|
p2[5]; //expected-note{{used in buffer access here}}
|
|
p3[5]; //expected-note{{used in buffer access here}}
|
|
x++; //expected-note{{used in pointer arithmetic here}}
|
|
#define _INCLUDE_WARN
|
|
#include "warn-unsafe-buffer-usage-pragma.h" // increment p2 in header
|
|
}
|
|
|
|
|
|
void withDiagnosticWarning() {
|
|
int *p1 = new int[10]; // not to warn
|
|
int *p2 = new int[10]; // expected-warning{{'p2' is an unsafe pointer used for buffer access}}
|
|
|
|
// diagnostics in opt-out region
|
|
#pragma clang unsafe_buffer_usage begin
|
|
p1[5]; // not to warn
|
|
p2[5]; // not to warn
|
|
#pragma clang diagnostic push
|
|
#pragma clang diagnostic warning "-Wunsafe-buffer-usage"
|
|
p1[5]; // not to warn
|
|
p2[5]; // not to warn
|
|
#pragma clang diagnostic warning "-Weverything"
|
|
p1[5]; // not to warn expected-warning{{expression result unused}}
|
|
p2[5]; // not to warn expected-warning{{expression result unused}}
|
|
#pragma clang diagnostic pop
|
|
#pragma clang unsafe_buffer_usage end
|
|
|
|
// opt-out region under diagnostic warning
|
|
#pragma clang diagnostic push
|
|
#pragma clang diagnostic warning "-Wunsafe-buffer-usage"
|
|
#pragma clang unsafe_buffer_usage begin
|
|
p1[5]; // not to warn
|
|
p2[5]; // not to warn
|
|
#pragma clang unsafe_buffer_usage end
|
|
#pragma clang diagnostic pop
|
|
|
|
p2[5]; // expected-note{{used in buffer access here}}
|
|
}
|
|
|
|
|
|
void withDiagnosticIgnore() {
|
|
int *p1 = new int[10]; // not to warn
|
|
int *p2 = new int[10]; // expected-warning{{'p2' is an unsafe pointer used for buffer access}}
|
|
int *p3 = new int[10]; // expected-warning{{'p3' is an unsafe pointer used for buffer access}}
|
|
|
|
#pragma clang unsafe_buffer_usage begin
|
|
p1[5]; // not to warn
|
|
p2[5]; // not to warn
|
|
#pragma clang diagnostic push
|
|
#pragma clang diagnostic ignored "-Wunsafe-buffer-usage"
|
|
p1[5]; // not to warn
|
|
p2[5]; // not to warn
|
|
#pragma clang diagnostic ignored "-Weverything"
|
|
p1[5]; // not to warn
|
|
p2[5]; // not to warn
|
|
#pragma clang diagnostic pop
|
|
#pragma clang unsafe_buffer_usage end
|
|
|
|
#pragma clang diagnostic push
|
|
#pragma clang diagnostic ignored "-Wunsafe-buffer-usage"
|
|
#pragma clang unsafe_buffer_usage begin
|
|
p1[5]; // not to warn
|
|
p2[5]; // not to warn
|
|
#pragma clang unsafe_buffer_usage end
|
|
#pragma clang diagnostic pop
|
|
|
|
p2[5]; // expected-note{{used in buffer access here}}
|
|
|
|
#pragma clang diagnostic push
|
|
#pragma clang diagnostic ignored "-Wunsafe-buffer-usage"
|
|
#pragma clang unsafe_buffer_usage begin
|
|
p1[5]; // not to warn
|
|
p2[5]; // not to warn
|
|
#pragma clang unsafe_buffer_usage end
|
|
p3[5]; // expected-note{{used in buffer access here}}
|
|
#pragma clang diagnostic pop
|
|
}
|
|
|
|
void noteGoesWithVarDeclWarning() {
|
|
#pragma clang diagnostic push
|
|
#pragma clang diagnostic ignored "-Wunsafe-buffer-usage"
|
|
int *p = new int[10]; // not to warn
|
|
#pragma clang diagnostic pop
|
|
|
|
p[5]; // not to note since the associated warning is suppressed
|
|
}
|