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// 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 --check-prefixes=CHECK,NONLOCAL
//
// REQUIRES: x86-registered-target
// CHECK-LABEL: @f
double f(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;
}
union U { int a[0]; int b[1]; int c[2]; };
// CHECK-LABEL: define {{.*}} @f4
int f4(union U *u, int i) {
// a and b are treated as flexible array members.
// CHECK-NOT: @llvm.ubsantrap
return u->a[i] + u->b[i];
// CHECK: }
}
// CHECK-LABEL: define {{.*}} @f5
int f5(union U *u, int i) {
// c is not a flexible array member.
// NONLOCAL: call {{.*}} @llvm.ubsantrap
return u->c[i];
// CHECK: }
}
__attribute__((no_sanitize("bounds")))
int f6(int i) {
int b[64];
// CHECK-NOT: call void @llvm.trap()
// CHECK-NOT: trap:
// CHECK-NOT: cont:
return b[i];
}
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