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
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
|
// RUN: %clang_cc1 -fsanitize=alignment,null,object-size,shift-base,shift-exponent,return,signed-integer-overflow,vla-bound,float-cast-overflow,integer-divide-by-zero,bool,returns-nonnull-attribute,nonnull-attribute -fsanitize-recover=alignment,null,object-size,shift-base,shift-exponent,signed-integer-overflow,vla-bound,float-cast-overflow,integer-divide-by-zero,bool,returns-nonnull-attribute,nonnull-attribute -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s --check-prefix=CHECK-COMMON --check-prefix=CHECK-UBSAN
// RUN: %clang_cc1 -fsanitize-trap=alignment,null,object-size,shift-base,shift-exponent,return,signed-integer-overflow,vla-bound,float-cast-overflow,integer-divide-by-zero,bool,returns-nonnull-attribute,nonnull-attribute -fsanitize-recover=alignment,null,object-size,shift-base,shift-exponent,signed-integer-overflow,vla-bound,float-cast-overflow,integer-divide-by-zero,bool,returns-nonnull-attribute,nonnull-attribute -fsanitize=alignment,null,object-size,shift-base,shift-exponent,return,signed-integer-overflow,vla-bound,float-cast-overflow,integer-divide-by-zero,bool,returns-nonnull-attribute,nonnull-attribute -fsanitize-recover=alignment,null,object-size,shift-base,shift-exponent,signed-integer-overflow,vla-bound,float-cast-overflow,integer-divide-by-zero,bool,returns-nonnull-attribute,nonnull-attribute -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s --check-prefix=CHECK-COMMON --check-prefix=CHECK-TRAP
// RUN: %clang_cc1 -fsanitize=null -fsanitize-recover=null -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s --check-prefix=CHECK-NULL
// RUN: %clang_cc1 -fsanitize=signed-integer-overflow -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s --check-prefix=CHECK-OVERFLOW
// REQUIRES: asserts
// CHECK-UBSAN: @[[INT:.*]] = private unnamed_addr constant { i16, i16, [6 x i8] } { i16 0, i16 11, [6 x i8] c"'int'\00" }
// FIXME: When we only emit each type once, use [[INT]] more below.
// CHECK-UBSAN: @[[LINE_100:.*]] = private unnamed_addr global {{.*}}, i32 100, i32 5 {{.*}} @[[INT]], i64 4, i8 1
// CHECK-UBSAN: @[[LINE_200:.*]] = {{.*}}, i32 200, i32 10 {{.*}}, i64 4, i8 0
// CHECK-UBSAN: @[[LINE_300:.*]] = {{.*}}, i32 300, i32 12 {{.*}} @{{.*}}, {{.*}} @{{.*}}
// CHECK-UBSAN: @[[LINE_400:.*]] = {{.*}}, i32 400, i32 12 {{.*}} @{{.*}}, {{.*}} @{{.*}}
// CHECK-UBSAN: @[[LINE_500:.*]] = {{.*}}, i32 500, i32 10 {{.*}} @{{.*}}, i64 4, i8 0 }
// CHECK-UBSAN: @[[LINE_600:.*]] = {{.*}}, i32 600, i32 3 {{.*}} @{{.*}}, i64 4, i8 1 }
// CHECK-UBSAN: @[[STRUCT_S:.*]] = private unnamed_addr constant { i16, i16, [11 x i8] } { i16 -1, i16 0, [11 x i8] c"'struct S'\00" }
// CHECK-UBSAN: @[[LINE_700:.*]] = {{.*}}, i32 700, i32 14 {{.*}} @[[STRUCT_S]], i64 4, i8 3 }
// CHECK-UBSAN: @[[LINE_800:.*]] = {{.*}}, i32 800, i32 12 {{.*}} @{{.*}} }
// CHECK-UBSAN: @[[LINE_900:.*]] = {{.*}}, i32 900, i32 11 {{.*}} @{{.*}} }
// CHECK-NULL: @[[LINE_100:.*]] = private unnamed_addr global {{.*}}, i32 100, i32 5 {{.*}}
// PR6805
// CHECK-COMMON-LABEL: @foo
// CHECK-NULL-LABEL: @foo
void foo() {
union { int i; } u;
// CHECK-COMMON: %[[CHECK0:.*]] = icmp ne {{.*}}* %[[PTR:.*]], null
// CHECK-COMMON: %[[I8PTR:.*]] = bitcast i32* %[[PTR]] to i8*
// CHECK-COMMON-NEXT: %[[SIZE:.*]] = call i64 @llvm.objectsize.i64.p0i8(i8* %[[I8PTR]], i1 false)
// CHECK-COMMON-NEXT: %[[CHECK1:.*]] = icmp uge i64 %[[SIZE]], 4
// CHECK-COMMON: %[[PTRTOINT:.*]] = ptrtoint {{.*}}* %[[PTR]] to i64
// CHECK-COMMON-NEXT: %[[MISALIGN:.*]] = and i64 %[[PTRTOINT]], 3
// CHECK-COMMON-NEXT: %[[CHECK2:.*]] = icmp eq i64 %[[MISALIGN]], 0
// CHECK-COMMON: %[[CHECK01:.*]] = and i1 %[[CHECK0]], %[[CHECK1]]
// CHECK-COMMON-NEXT: %[[OK:.*]] = and i1 %[[CHECK01]], %[[CHECK2]]
// CHECK-UBSAN: br i1 %[[OK]], {{.*}} !prof ![[WEIGHT_MD:.*]], !nosanitize
// CHECK-TRAP: br i1 %[[OK]], {{.*}}
// CHECK-UBSAN: %[[ARG:.*]] = ptrtoint {{.*}} %[[PTR]] to i64
// CHECK-UBSAN-NEXT: call void @__ubsan_handle_type_mismatch(i8* bitcast ({{.*}} @[[LINE_100]] to i8*), i64 %[[ARG]])
// CHECK-TRAP: call void @llvm.trap() [[NR_NUW:#[0-9]+]]
// CHECK-TRAP-NEXT: unreachable
// With -fsanitize=null, only perform the null check.
// CHECK-NULL: %[[NULL:.*]] = icmp ne {{.*}}, null
// CHECK-NULL: br i1 %[[NULL]]
// CHECK-NULL: call void @__ubsan_handle_type_mismatch(i8* bitcast ({{.*}} @[[LINE_100]] to i8*), i64 %{{.*}})
#line 100
u.i=1;
}
// CHECK-COMMON-LABEL: @bar
int bar(int *a) {
// CHECK-COMMON: %[[SIZE:.*]] = call i64 @llvm.objectsize.i64
// CHECK-COMMON-NEXT: icmp uge i64 %[[SIZE]], 4
// CHECK-COMMON: %[[PTRINT:.*]] = ptrtoint
// CHECK-COMMON-NEXT: %[[MISALIGN:.*]] = and i64 %[[PTRINT]], 3
// CHECK-COMMON-NEXT: icmp eq i64 %[[MISALIGN]], 0
// CHECK-UBSAN: %[[ARG:.*]] = ptrtoint
// CHECK-UBSAN-NEXT: call void @__ubsan_handle_type_mismatch(i8* bitcast ({{.*}} @[[LINE_200]] to i8*), i64 %[[ARG]])
// CHECK-TRAP: call void @llvm.trap() [[NR_NUW]]
// CHECK-TRAP-NEXT: unreachable
#line 200
return *a;
}
// CHECK-UBSAN-LABEL: @addr_space
int addr_space(int __attribute__((address_space(256))) *a) {
// CHECK-UBSAN-NOT: __ubsan
return *a;
}
// CHECK-COMMON-LABEL: @lsh_overflow
int lsh_overflow(int a, int b) {
// CHECK-COMMON: %[[RHS_INBOUNDS:.*]] = icmp ule i32 %[[RHS:.*]], 31
// CHECK-COMMON-NEXT: br i1 %[[RHS_INBOUNDS]], label %[[CHECK_BB:.*]], label %[[CONT_BB:.*]],
// CHECK-COMMON: [[CHECK_BB]]:
// CHECK-COMMON-NEXT: %[[SHIFTED_OUT_WIDTH:.*]] = sub nuw nsw i32 31, %[[RHS]]
// CHECK-COMMON-NEXT: %[[SHIFTED_OUT:.*]] = lshr i32 %[[LHS:.*]], %[[SHIFTED_OUT_WIDTH]]
// CHECK-COMMON-NEXT: %[[NO_OVERFLOW:.*]] = icmp eq i32 %[[SHIFTED_OUT]], 0
// CHECK-COMMON-NEXT: br label %[[CONT_BB]]
// CHECK-COMMON: [[CONT_BB]]:
// CHECK-COMMON-NEXT: %[[VALID_BASE:.*]] = phi i1 [ true, {{.*}} ], [ %[[NO_OVERFLOW]], %[[CHECK_BB]] ]
// CHECK-COMMON-NEXT: %[[VALID:.*]] = and i1 %[[RHS_INBOUNDS]], %[[VALID_BASE]]
// CHECK-UBSAN: br i1 %[[VALID]], {{.*}} !prof ![[WEIGHT_MD]]
// CHECK-TRAP: br i1 %[[VALID]]
// CHECK-UBSAN: %[[ARG1:.*]] = zext
// CHECK-UBSAN-NEXT: %[[ARG2:.*]] = zext
// CHECK-UBSAN-NEXT: call void @__ubsan_handle_shift_out_of_bounds(i8* bitcast ({{.*}} @[[LINE_300]] to i8*), i64 %[[ARG1]], i64 %[[ARG2]])
// CHECK-UBSAN-NOT: call void @__ubsan_handle_shift_out_of_bounds
// CHECK-TRAP: call void @llvm.trap() [[NR_NUW]]
// CHECK-TRAP: unreachable
// CHECK-TRAP-NOT: call void @llvm.trap()
// CHECK-COMMON: %[[RET:.*]] = shl i32 %[[LHS]], %[[RHS]]
// CHECK-COMMON-NEXT: ret i32 %[[RET]]
#line 300
return a << b;
}
// CHECK-COMMON-LABEL: @rsh_inbounds
int rsh_inbounds(int a, int b) {
// CHECK-COMMON: %[[INBOUNDS:.*]] = icmp ule i32 %[[RHS:.*]], 31
// CHECK-COMMON: br i1 %[[INBOUNDS]]
// CHECK-UBSAN: %[[ARG1:.*]] = zext
// CHECK-UBSAN-NEXT: %[[ARG2:.*]] = zext
// CHECK-UBSAN-NEXT: call void @__ubsan_handle_shift_out_of_bounds(i8* bitcast ({{.*}} @[[LINE_400]] to i8*), i64 %[[ARG1]], i64 %[[ARG2]])
// CHECK-TRAP: call void @llvm.trap() [[NR_NUW]]
// CHECK-TRAP-NEXT: unreachable
// CHECK-COMMON: %[[RET:.*]] = ashr i32 {{.*}}, %[[RHS]]
// CHECK-COMMON-NEXT: ret i32 %[[RET]]
#line 400
return a >> b;
}
// CHECK-COMMON-LABEL: @load
int load(int *p) {
// CHECK-UBSAN: call void @__ubsan_handle_type_mismatch(i8* bitcast ({{.*}} @[[LINE_500]] to i8*), i64 %{{.*}})
// CHECK-TRAP: call void @llvm.trap() [[NR_NUW]]
// CHECK-TRAP-NEXT: unreachable
#line 500
return *p;
}
// CHECK-COMMON-LABEL: @store
void store(int *p, int q) {
// CHECK-UBSAN: call void @__ubsan_handle_type_mismatch(i8* bitcast ({{.*}} @[[LINE_600]] to i8*), i64 %{{.*}})
// CHECK-TRAP: call void @llvm.trap() [[NR_NUW]]
// CHECK-TRAP-NEXT: unreachable
#line 600
*p = q;
}
struct S { int k; };
// CHECK-COMMON-LABEL: @member_access
int *member_access(struct S *p) {
// CHECK-UBSAN: call void @__ubsan_handle_type_mismatch(i8* bitcast ({{.*}} @[[LINE_700]] to i8*), i64 %{{.*}})
// CHECK-TRAP: call void @llvm.trap() [[NR_NUW]]
// CHECK-TRAP-NEXT: unreachable
#line 700
return &p->k;
}
// CHECK-COMMON-LABEL: @signed_overflow
int signed_overflow(int a, int b) {
// CHECK-UBSAN: %[[ARG1:.*]] = zext
// CHECK-UBSAN-NEXT: %[[ARG2:.*]] = zext
// CHECK-UBSAN-NEXT: call void @__ubsan_handle_add_overflow(i8* bitcast ({{.*}} @[[LINE_800]] to i8*), i64 %[[ARG1]], i64 %[[ARG2]])
// CHECK-TRAP: call void @llvm.trap() [[NR_NUW]]
// CHECK-TRAP-NEXT: unreachable
#line 800
return a + b;
}
// CHECK-COMMON-LABEL: @no_return
int no_return() {
// Reaching the end of a noreturn function is fine in C.
// FIXME: If the user explicitly requests -fsanitize=return, we should catch
// that here even though it's not undefined behavior.
// CHECK-COMMON-NOT: call
// CHECK-COMMON-NOT: unreachable
// CHECK-COMMON: ret i32
}
// CHECK-UBSAN-LABEL: @vla_bound
void vla_bound(int n) {
// CHECK-UBSAN: icmp sgt i32 %[[PARAM:.*]], 0
//
// CHECK-UBSAN: %[[ARG:.*]] = zext i32 %[[PARAM]] to i64
// CHECK-UBSAN-NEXT: call void @__ubsan_handle_vla_bound_not_positive(i8* bitcast ({{.*}} @[[LINE_900]] to i8*), i64 %[[ARG]])
#line 900
int arr[n * 3];
}
// CHECK-UBSAN-LABEL: @int_float_no_overflow
float int_float_no_overflow(__int128 n) {
// CHECK-UBSAN-NOT: call void @__ubsan_handle
return n;
}
// CHECK-COMMON-LABEL: @int_float_overflow
float int_float_overflow(unsigned __int128 n) {
// This is 2**104. FLT_MAX is 2**128 - 2**104.
// CHECK-COMMON: %[[INBOUNDS:.*]] = icmp ule i128 %{{.*}}, -20282409603651670423947251286016
// CHECK-COMMON-NEXT: br i1 %[[INBOUNDS]]
// CHECK-UBSAN: call void @__ubsan_handle_float_cast_overflow(
// CHECK-TRAP: call void @llvm.trap() [[NR_NUW]]
// CHECK-TRAP-NEXT: unreachable
return n;
}
// CHECK-COMMON-LABEL: @int_fp16_overflow
void int_fp16_overflow(int n, __fp16 *p) {
// CHECK-COMMON: %[[GE:.*]] = icmp sge i32 %{{.*}}, -65504
// CHECK-COMMON: %[[LE:.*]] = icmp sle i32 %{{.*}}, 65504
// CHECK-COMMON: %[[INBOUNDS:.*]] = and i1 %[[GE]], %[[LE]]
// CHECK-COMMON-NEXT: br i1 %[[INBOUNDS]]
// CHECK-UBSAN: call void @__ubsan_handle_float_cast_overflow(
// CHECK-TRAP: call void @llvm.trap() [[NR_NUW]]
// CHECK-TRAP-NEXT: unreachable
*p = n;
}
// CHECK-COMMON-LABEL: @float_int_overflow
int float_int_overflow(float f) {
// CHECK-COMMON: %[[GE:.*]] = fcmp ogt float %[[F:.*]], 0xC1E0000020000000
// CHECK-COMMON: %[[LE:.*]] = fcmp olt float %[[F]], 0x41E0000000000000
// CHECK-COMMON: %[[INBOUNDS:.*]] = and i1 %[[GE]], %[[LE]]
// CHECK-COMMON-NEXT: br i1 %[[INBOUNDS]]
// CHECK-UBSAN: %[[CAST:.*]] = bitcast float %[[F]] to i32
// CHECK-UBSAN: %[[ARG:.*]] = zext i32 %[[CAST]] to i64
// CHECK-UBSAN: call void @__ubsan_handle_float_cast_overflow({{.*}}, i64 %[[ARG]]
// CHECK-TRAP: call void @llvm.trap() [[NR_NUW]]
// CHECK-TRAP-NEXT: unreachable
return f;
}
// CHECK-COMMON-LABEL: @long_double_int_overflow
int long_double_int_overflow(long double ld) {
// CHECK-UBSAN: alloca x86_fp80
// CHECK-COMMON: %[[GE:.*]] = fcmp ogt x86_fp80 %[[F:.*]], 0xKC01E800000010000000
// CHECK-COMMON: %[[LE:.*]] = fcmp olt x86_fp80 %[[F]], 0xK401E800000000000000
// CHECK-COMMON: %[[INBOUNDS:.*]] = and i1 %[[GE]], %[[LE]]
// CHECK-COMMON-NEXT: br i1 %[[INBOUNDS]]
// CHECK-UBSAN: store x86_fp80 %[[F]], x86_fp80* %[[ALLOCA:.*]], !nosanitize
// CHECK-UBSAN: %[[ARG:.*]] = ptrtoint x86_fp80* %[[ALLOCA]] to i64
// CHECK-UBSAN: call void @__ubsan_handle_float_cast_overflow({{.*}}, i64 %[[ARG]]
// CHECK-TRAP: call void @llvm.trap() [[NR_NUW]]
// CHECK-TRAP-NEXT: unreachable
return ld;
}
// CHECK-COMMON-LABEL: @float_uint_overflow
unsigned float_uint_overflow(float f) {
// CHECK-COMMON: %[[GE:.*]] = fcmp ogt float %[[F:.*]], -1.{{0*}}e+00
// CHECK-COMMON: %[[LE:.*]] = fcmp olt float %[[F]], 0x41F0000000000000
// CHECK-COMMON: %[[INBOUNDS:.*]] = and i1 %[[GE]], %[[LE]]
// CHECK-COMMON-NEXT: br i1 %[[INBOUNDS]]
// CHECK-UBSAN: call void @__ubsan_handle_float_cast_overflow(
// CHECK-TRAP: call void @llvm.trap() [[NR_NUW]]
// CHECK-TRAP-NEXT: unreachable
return f;
}
// CHECK-COMMON-LABEL: @fp16_char_overflow
signed char fp16_char_overflow(__fp16 *p) {
// CHECK-COMMON: %[[GE:.*]] = fcmp ogt float %[[F:.*]], -1.29{{0*}}e+02
// CHECK-COMMON: %[[LE:.*]] = fcmp olt float %[[F]], 1.28{{0*}}e+02
// CHECK-COMMON: %[[INBOUNDS:.*]] = and i1 %[[GE]], %[[LE]]
// CHECK-COMMON-NEXT: br i1 %[[INBOUNDS]]
// CHECK-UBSAN: call void @__ubsan_handle_float_cast_overflow(
// CHECK-TRAP: call void @llvm.trap() [[NR_NUW]]
// CHECK-TRAP-NEXT: unreachable
return *p;
}
// CHECK-COMMON-LABEL: @float_float_overflow
float float_float_overflow(double f) {
// CHECK-COMMON: %[[F:.*]] = call double @llvm.fabs.f64(
// CHECK-COMMON: %[[GE:.*]] = fcmp ogt double %[[F]], 0x47EFFFFFE0000000
// CHECK-COMMON: %[[LE:.*]] = fcmp olt double %[[F]], 0x7FF0000000000000
// CHECK-COMMON: %[[OUTOFBOUNDS:.*]] = and i1 %[[GE]], %[[LE]]
// CHECK-COMMON: %[[INBOUNDS:.*]] = xor i1 %[[OUTOFBOUNDS]], true
// CHECK-COMMON-NEXT: br i1 %[[INBOUNDS]]
// CHECK-UBSAN: call void @__ubsan_handle_float_cast_overflow(
// CHECK-TRAP: call void @llvm.trap() [[NR_NUW]]
// CHECK-TRAP-NEXT: unreachable
return f;
}
// CHECK-COMMON-LABEL: @int_divide_overflow
// CHECK-OVERFLOW-LABEL: @int_divide_overflow
int int_divide_overflow(int a, int b) {
// CHECK-COMMON: %[[ZERO:.*]] = icmp ne i32 %[[B:.*]], 0
// CHECK-OVERFLOW-NOT: icmp ne i32 %{{.*}}, 0
// CHECK-COMMON: %[[AOK:.*]] = icmp ne i32 %[[A:.*]], -2147483648
// CHECK-COMMON-NEXT: %[[BOK:.*]] = icmp ne i32 %[[B]], -1
// CHECK-COMMON-NEXT: %[[OVER:.*]] = or i1 %[[AOK]], %[[BOK]]
// CHECK-COMMON: %[[OK:.*]] = and i1 %[[ZERO]], %[[OVER]]
// CHECK-COMMON: br i1 %[[OK]]
// CHECK-OVERFLOW: %[[AOK:.*]] = icmp ne i32 %[[A:.*]], -2147483648
// CHECK-OVERFLOW-NEXT: %[[BOK:.*]] = icmp ne i32 %[[B:.*]], -1
// CHECK-OVERFLOW-NEXT: %[[OK:.*]] = or i1 %[[AOK]], %[[BOK]]
// CHECK-OVERFLOW: br i1 %[[OK]]
// CHECK-TRAP: call void @llvm.trap() [[NR_NUW]]
// CHECK-TRAP: unreachable
return a / b;
// CHECK-COMMON: }
// CHECK-OVERFLOW: }
}
// CHECK-COMMON-LABEL: @sour_bool
_Bool sour_bool(_Bool *p) {
// CHECK-COMMON: %[[OK:.*]] = icmp ule i8 {{.*}}, 1
// CHECK-COMMON: br i1 %[[OK]]
// CHECK-UBSAN: call void @__ubsan_handle_load_invalid_value(i8* bitcast ({{.*}}), i64 {{.*}})
// CHECK-TRAP: call void @llvm.trap() [[NR_NUW]]
// CHECK-TRAP: unreachable
return *p;
}
// CHECK-COMMON-LABEL: @ret_nonnull
__attribute__((returns_nonnull))
int *ret_nonnull(int *a) {
// CHECK-COMMON: [[OK:%.*]] = icmp ne i32* {{.*}}, null
// CHECK-COMMON: br i1 [[OK]]
// CHECK-UBSAN: call void @__ubsan_handle_nonnull_return
// CHECK-TRAP: call void @llvm.trap() [[NR_NUW]]
// CHECK-TRAP: unreachable
return a;
}
// CHECK-COMMON-LABEL: @call_decl_nonnull
__attribute__((nonnull)) void decl_nonnull(int *a);
void call_decl_nonnull(int *a) {
// CHECK-COMMON: [[OK:%.*]] = icmp ne i32* {{.*}}, null
// CHECK-COMMON: br i1 [[OK]]
// CHECK-UBSAN: call void @__ubsan_handle_nonnull_arg
// CHECK-TRAP: call void @llvm.trap() [[NR_NUW]]
// CHECK-TRAP: unreachable
decl_nonnull(a);
}
extern void *memcpy (void *, const void *, unsigned) __attribute__((nonnull(1, 2)));
// CHECK-COMMON-LABEL: @call_memcpy_nonnull
void call_memcpy_nonnull(void *p, void *q, int sz) {
// CHECK-COMMON: icmp ne i8* {{.*}}, null
// CHECK-UBSAN: call void @__ubsan_handle_nonnull_arg
// CHECK-TRAP: call void @llvm.trap()
// CHECK-COMMON: icmp ne i8* {{.*}}, null
// CHECK-UBSAN: call void @__ubsan_handle_nonnull_arg
// CHECK-TRAP: call void @llvm.trap()
memcpy(p, q, sz);
}
extern void *memmove (void *, const void *, unsigned) __attribute__((nonnull(1, 2)));
// CHECK-COMMON-LABEL: @call_memmove_nonnull
void call_memmove_nonnull(void *p, void *q, int sz) {
// CHECK-COMMON: icmp ne i8* {{.*}}, null
// CHECK-UBSAN: call void @__ubsan_handle_nonnull_arg
// CHECK-TRAP: call void @llvm.trap()
// CHECK-COMMON: icmp ne i8* {{.*}}, null
// CHECK-UBSAN: call void @__ubsan_handle_nonnull_arg
// CHECK-TRAP: call void @llvm.trap()
memmove(p, q, sz);
}
// CHECK-COMMON-LABEL: @call_nonnull_variadic
__attribute__((nonnull)) void nonnull_variadic(int a, ...);
void call_nonnull_variadic(int a, int *b) {
// CHECK-COMMON: [[OK:%.*]] = icmp ne i32* {{.*}}, null
// CHECK-COMMON: br i1 [[OK]]
// CHECK-UBSAN: call void @__ubsan_handle_nonnull_arg
// CHECK-UBSAN-NOT: __ubsan_handle_nonnull_arg
// CHECK-COMMON: call void (i32, ...) @nonnull_variadic
nonnull_variadic(a, b);
}
// CHECK-UBSAN: ![[WEIGHT_MD]] = !{!"branch_weights", i32 1048575, i32 1}
// CHECK-TRAP: attributes [[NR_NUW]] = { noreturn nounwind }
|
