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| // RUN: %clang_cc1 %s -emit-llvm -w -triple x86_64-apple-darwin10 -fsanitize=array-bounds -o - | FileCheck %s
// CHECK-LABEL: define i32 @foo(
int foo(int *const p __attribute__((pass_object_size(0))), int n) {
int x = (p)[n];
// CHECK: [[SIZE_ALLOCA:%.*]] = alloca i64, align 8
// CHECK: store i64 %{{.*}}, i64* [[SIZE_ALLOCA]], align 8
// CHECK: [[LOAD_SIZE:%.*]] = load i64, i64* [[SIZE_ALLOCA]], align 8, !nosanitize
// CHECK-NEXT: [[SCALED_SIZE:%.*]] = udiv i64 [[LOAD_SIZE]], 4, !nosanitize
// CHECK-NEXT: [[SEXT_N:%.*]] = sext i32 %{{.*}} to i64, !nosanitize
// CHECK-NEXT: [[ICMP:%.*]] = icmp ult i64 [[SEXT_N]], [[SCALED_SIZE]], !nosanitize
// CHECK-NEXT: br i1 [[ICMP]], {{.*}} !nosanitize
// CHECK: __ubsan_handle_out_of_bounds
{
int **p = &p; // Shadow the parameter. The pass_object_size info is lost.
// CHECK-NOT: __ubsan_handle_out_of_bounds
x = *p[n];
}
// CHECK: ret i32
return x;
}
typedef struct {} ZeroSizedType;
// CHECK-LABEL: define void @bar(
ZeroSizedType bar(ZeroSizedType *const p __attribute__((pass_object_size(0))), int n) {
// CHECK-NOT: __ubsan_handle_out_of_bounds
// CHECK: ret void
return p[n];
}
// CHECK-LABEL: define i32 @baz(
int baz(int *const p __attribute__((pass_object_size(1))), int n) {
// CHECK: __ubsan_handle_out_of_bounds
// CHECK: ret i32
return p[n];
}
// CHECK-LABEL: define i32 @mat(
int mat(int *const p __attribute__((pass_object_size(2))), int n) {
// CHECK-NOT: __ubsan_handle_out_of_bounds
// CHECK: ret i32
return p[n];
}
// CHECK-LABEL: define i32 @pat(
int pat(int *const p __attribute__((pass_object_size(3))), int n) {
// CHECK-NOT: __ubsan_handle_out_of_bounds
// CHECK: ret i32
return p[n];
}
// CHECK-LABEL: define i32 @cat(
int cat(int p[static 10], int n) {
// CHECK-NOT: __ubsan_handle_out_of_bounds
// CHECK: ret i32
return p[n];
}
// CHECK-LABEL: define i32 @bat(
int bat(int n, int p[n]) {
// CHECK-NOT: __ubsan_handle_out_of_bounds
// CHECK: ret i32
return p[n];
}
|