1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
|
// RUN: %clang_cc1 -fsanitize=local-bounds -emit-llvm -triple x86_64-apple-darwin10 %s -o - | FileCheck %s
// RUN: %clang_cc1 -fsanitize=array-bounds -O -fsanitize-trap=array-bounds -emit-llvm -triple x86_64-apple-darwin10 -DNO_DYNAMIC %s -o - | FileCheck %s
//
// REQUIRES: x86-registered-target
// CHECK-LABEL: @f1
double f1(int b, int i) {
double a[b];
// CHECK: call {{.*}} @llvm.{{(ubsan)?trap}}
return a[i];
}
// CHECK-LABEL: @f2
void f2(void) {
// everything is constant; no trap possible
// CHECK-NOT: call {{.*}} @llvm.{{(ubsan)?trap}}
int a[2];
a[1] = 42;
#ifndef NO_DYNAMIC
extern void *malloc(__typeof__(sizeof(0)));
short *b = malloc(64);
b[5] = *a + a[1] + 2;
#endif
}
// CHECK-LABEL: @f3
void f3(void) {
int a[1];
// CHECK: call {{.*}} @llvm.{{(ubsan)?trap}}
a[2] = 1;
}
// CHECK-LABEL: @f4
__attribute__((no_sanitize("bounds")))
int f4(int i) {
int b[64];
// CHECK-NOT: call void @llvm.trap()
// CHECK-NOT: trap:
// CHECK-NOT: cont:
return b[i];
}
// Union flexible-array memebers are a C99 extension. All array members with a
// constant size should be considered FAMs.
union U { int a[0]; int b[1]; int c[2]; };
// CHECK-LABEL: @f5
int f5(union U *u, int i) {
// a is treated as a flexible array member.
// CHECK-NOT: @llvm.ubsantrap
return u->a[i];
}
// CHECK-LABEL: @f6
int f6(union U *u, int i) {
// b is treated as a flexible array member.
// CHECK-NOT: call {{.*}} @llvm.{{(ubsan)?trap}}
return u->b[i];
}
// CHECK-LABEL: @f7
int f7(union U *u, int i) {
// c is treated as a flexible array member.
// CHECK-NOT: @llvm.ubsantrap
return u->c[i];
}
|
