1 // RUN: %clang_cc1 -fsanitize=alignment,null,object-size,shift,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,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
2 // RUN: %clang_cc1 -fsanitize-undefined-trap-on-error -fsanitize=alignment,null,object-size,shift,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,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
3 // RUN: %clang_cc1 -fsanitize=null -fsanitize-recover=null -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s --check-prefix=CHECK-NULL
4 // RUN: %clang_cc1 -fsanitize=signed-integer-overflow -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s --check-prefix=CHECK-OVERFLOW
5
6 // CHECK-UBSAN: @[[INT:.*]] = private unnamed_addr constant { i16, i16, [6 x i8] } { i16 0, i16 11, [6 x i8] c"'int'\00" }
7
8 // FIXME: When we only emit each type once, use [[INT]] more below.
9 // CHECK-UBSAN: @[[LINE_100:.*]] = private unnamed_addr global {{.*}}, i32 100, i32 5 {{.*}} @[[INT]], i64 4, i8 1
10 // CHECK-UBSAN: @[[LINE_200:.*]] = {{.*}}, i32 200, i32 10 {{.*}}, i64 4, i8 0
11 // CHECK-UBSAN: @[[LINE_300:.*]] = {{.*}}, i32 300, i32 12 {{.*}} @{{.*}}, {{.*}} @{{.*}}
12 // CHECK-UBSAN: @[[LINE_400:.*]] = {{.*}}, i32 400, i32 12 {{.*}} @{{.*}}, {{.*}} @{{.*}}
13 // CHECK-UBSAN: @[[LINE_500:.*]] = {{.*}}, i32 500, i32 10 {{.*}} @{{.*}}, i64 4, i8 0 }
14 // CHECK-UBSAN: @[[LINE_600:.*]] = {{.*}}, i32 600, i32 3 {{.*}} @{{.*}}, i64 4, i8 1 }
15
16 // CHECK-UBSAN: @[[STRUCT_S:.*]] = private unnamed_addr constant { i16, i16, [11 x i8] } { i16 -1, i16 0, [11 x i8] c"'struct S'\00" }
17
18 // CHECK-UBSAN: @[[LINE_700:.*]] = {{.*}}, i32 700, i32 14 {{.*}} @[[STRUCT_S]], i64 4, i8 3 }
19 // CHECK-UBSAN: @[[LINE_800:.*]] = {{.*}}, i32 800, i32 12 {{.*}} @{{.*}} }
20 // CHECK-UBSAN: @[[LINE_900:.*]] = {{.*}}, i32 900, i32 11 {{.*}} @{{.*}} }
21
22 // CHECK-NULL: @[[LINE_100:.*]] = private unnamed_addr global {{.*}}, i32 100, i32 5 {{.*}}
23
24 // PR6805
25 // CHECK-COMMON-LABEL: @foo
26 // CHECK-NULL-LABEL: @foo
foo()27 void foo() {
28 union { int i; } u;
29 // CHECK-COMMON: %[[CHECK0:.*]] = icmp ne {{.*}}* %[[PTR:.*]], null
30
31 // CHECK-COMMON: %[[I8PTR:.*]] = bitcast i32* %[[PTR]] to i8*
32 // CHECK-COMMON-NEXT: %[[SIZE:.*]] = call i64 @llvm.objectsize.i64.p0i8(i8* %[[I8PTR]], i1 false)
33 // CHECK-COMMON-NEXT: %[[CHECK1:.*]] = icmp uge i64 %[[SIZE]], 4
34
35 // CHECK-COMMON: %[[PTRTOINT:.*]] = ptrtoint {{.*}}* %[[PTR]] to i64
36 // CHECK-COMMON-NEXT: %[[MISALIGN:.*]] = and i64 %[[PTRTOINT]], 3
37 // CHECK-COMMON-NEXT: %[[CHECK2:.*]] = icmp eq i64 %[[MISALIGN]], 0
38
39 // CHECK-COMMON: %[[CHECK01:.*]] = and i1 %[[CHECK0]], %[[CHECK1]]
40 // CHECK-COMMON-NEXT: %[[OK:.*]] = and i1 %[[CHECK01]], %[[CHECK2]]
41
42 // CHECK-UBSAN: br i1 %[[OK]], {{.*}} !prof ![[WEIGHT_MD:.*]], !nosanitize
43 // CHECK-TRAP: br i1 %[[OK]], {{.*}}
44
45 // CHECK-UBSAN: %[[ARG:.*]] = ptrtoint {{.*}} %[[PTR]] to i64
46 // CHECK-UBSAN-NEXT: call void @__ubsan_handle_type_mismatch(i8* bitcast ({{.*}} @[[LINE_100]] to i8*), i64 %[[ARG]])
47
48 // CHECK-TRAP: call void @llvm.trap() [[NR_NUW:#[0-9]+]]
49 // CHECK-TRAP-NEXT: unreachable
50
51 // With -fsanitize=null, only perform the null check.
52 // CHECK-NULL: %[[NULL:.*]] = icmp ne {{.*}}, null
53 // CHECK-NULL: br i1 %[[NULL]]
54 // CHECK-NULL: call void @__ubsan_handle_type_mismatch(i8* bitcast ({{.*}} @[[LINE_100]] to i8*), i64 %{{.*}})
55 #line 100
56 u.i=1;
57 }
58
59 // CHECK-COMMON-LABEL: @bar
bar(int * a)60 int bar(int *a) {
61 // CHECK-COMMON: %[[SIZE:.*]] = call i64 @llvm.objectsize.i64
62 // CHECK-COMMON-NEXT: icmp uge i64 %[[SIZE]], 4
63
64 // CHECK-COMMON: %[[PTRINT:.*]] = ptrtoint
65 // CHECK-COMMON-NEXT: %[[MISALIGN:.*]] = and i64 %[[PTRINT]], 3
66 // CHECK-COMMON-NEXT: icmp eq i64 %[[MISALIGN]], 0
67
68 // CHECK-UBSAN: %[[ARG:.*]] = ptrtoint
69 // CHECK-UBSAN-NEXT: call void @__ubsan_handle_type_mismatch(i8* bitcast ({{.*}} @[[LINE_200]] to i8*), i64 %[[ARG]])
70
71 // CHECK-TRAP: call void @llvm.trap() [[NR_NUW]]
72 // CHECK-TRAP-NEXT: unreachable
73
74 #line 200
75 return *a;
76 }
77
78 // CHECK-UBSAN-LABEL: @addr_space
addr_space(int * a)79 int addr_space(int __attribute__((address_space(256))) *a) {
80 // CHECK-UBSAN-NOT: __ubsan
81 return *a;
82 }
83
84 // CHECK-COMMON-LABEL: @lsh_overflow
lsh_overflow(int a,int b)85 int lsh_overflow(int a, int b) {
86 // CHECK-COMMON: %[[INBOUNDS:.*]] = icmp ule i32 %[[RHS:.*]], 31
87 // CHECK-COMMON-NEXT: br i1 %[[INBOUNDS]], label %[[CHECKBB:.*]], label %[[CONTBB:.*]]
88
89 // CHECK-COMMON: %[[SHIFTED_OUT_WIDTH:.*]] = sub nuw nsw i32 31, %[[RHS]]
90 // CHECK-COMMON-NEXT: %[[SHIFTED_OUT:.*]] = lshr i32 %[[LHS:.*]], %[[SHIFTED_OUT_WIDTH]]
91 // CHECK-COMMON-NEXT: %[[NO_OVERFLOW:.*]] = icmp eq i32 %[[SHIFTED_OUT]], 0
92 // CHECK-COMMON-NEXT: br label %[[CONTBB]]
93
94 // CHECK-COMMON: %[[VALID:.*]] = phi i1 [ %[[INBOUNDS]], {{.*}} ], [ %[[NO_OVERFLOW]], %[[CHECKBB]] ]
95 // CHECK-UBSAN: br i1 %[[VALID]], {{.*}} !prof ![[WEIGHT_MD]]
96 // CHECK-TRAP: br i1 %[[VALID]]
97
98 // CHECK-UBSAN: %[[ARG1:.*]] = zext
99 // CHECK-UBSAN-NEXT: %[[ARG2:.*]] = zext
100 // CHECK-UBSAN-NEXT: call void @__ubsan_handle_shift_out_of_bounds(i8* bitcast ({{.*}} @[[LINE_300]] to i8*), i64 %[[ARG1]], i64 %[[ARG2]])
101 // CHECK-UBSAN-NOT: call void @__ubsan_handle_shift_out_of_bounds
102
103 // CHECK-TRAP: call void @llvm.trap() [[NR_NUW]]
104 // CHECK-TRAP: unreachable
105 // CHECK-TRAP-NOT: call void @llvm.trap()
106
107 // CHECK-COMMON: %[[RET:.*]] = shl i32 %[[LHS]], %[[RHS]]
108 // CHECK-COMMON-NEXT: ret i32 %[[RET]]
109 #line 300
110 return a << b;
111 }
112
113 // CHECK-COMMON-LABEL: @rsh_inbounds
rsh_inbounds(int a,int b)114 int rsh_inbounds(int a, int b) {
115 // CHECK-COMMON: %[[INBOUNDS:.*]] = icmp ule i32 %[[RHS:.*]], 31
116 // CHECK-COMMON: br i1 %[[INBOUNDS]]
117
118 // CHECK-UBSAN: %[[ARG1:.*]] = zext
119 // CHECK-UBSAN-NEXT: %[[ARG2:.*]] = zext
120 // CHECK-UBSAN-NEXT: call void @__ubsan_handle_shift_out_of_bounds(i8* bitcast ({{.*}} @[[LINE_400]] to i8*), i64 %[[ARG1]], i64 %[[ARG2]])
121
122 // CHECK-TRAP: call void @llvm.trap() [[NR_NUW]]
123 // CHECK-TRAP-NEXT: unreachable
124
125 // CHECK-COMMON: %[[RET:.*]] = ashr i32 %[[LHS]], %[[RHS]]
126 // CHECK-COMMON-NEXT: ret i32 %[[RET]]
127 #line 400
128 return a >> b;
129 }
130
131 // CHECK-COMMON-LABEL: @load
load(int * p)132 int load(int *p) {
133 // CHECK-UBSAN: call void @__ubsan_handle_type_mismatch(i8* bitcast ({{.*}} @[[LINE_500]] to i8*), i64 %{{.*}})
134
135 // CHECK-TRAP: call void @llvm.trap() [[NR_NUW]]
136 // CHECK-TRAP-NEXT: unreachable
137 #line 500
138 return *p;
139 }
140
141 // CHECK-COMMON-LABEL: @store
store(int * p,int q)142 void store(int *p, int q) {
143 // CHECK-UBSAN: call void @__ubsan_handle_type_mismatch(i8* bitcast ({{.*}} @[[LINE_600]] to i8*), i64 %{{.*}})
144
145 // CHECK-TRAP: call void @llvm.trap() [[NR_NUW]]
146 // CHECK-TRAP-NEXT: unreachable
147 #line 600
148 *p = q;
149 }
150
151 struct S { int k; };
152
153 // CHECK-COMMON-LABEL: @member_access
member_access(struct S * p)154 int *member_access(struct S *p) {
155 // CHECK-UBSAN: call void @__ubsan_handle_type_mismatch(i8* bitcast ({{.*}} @[[LINE_700]] to i8*), i64 %{{.*}})
156
157 // CHECK-TRAP: call void @llvm.trap() [[NR_NUW]]
158 // CHECK-TRAP-NEXT: unreachable
159 #line 700
160 return &p->k;
161 }
162
163 // CHECK-COMMON-LABEL: @signed_overflow
signed_overflow(int a,int b)164 int signed_overflow(int a, int b) {
165 // CHECK-UBSAN: %[[ARG1:.*]] = zext
166 // CHECK-UBSAN-NEXT: %[[ARG2:.*]] = zext
167 // CHECK-UBSAN-NEXT: call void @__ubsan_handle_add_overflow(i8* bitcast ({{.*}} @[[LINE_800]] to i8*), i64 %[[ARG1]], i64 %[[ARG2]])
168
169 // CHECK-TRAP: call void @llvm.trap() [[NR_NUW]]
170 // CHECK-TRAP-NEXT: unreachable
171 #line 800
172 return a + b;
173 }
174
175 // CHECK-COMMON-LABEL: @no_return
no_return()176 int no_return() {
177 // Reaching the end of a noreturn function is fine in C.
178 // FIXME: If the user explicitly requests -fsanitize=return, we should catch
179 // that here even though it's not undefined behavior.
180 // CHECK-COMMON-NOT: call
181 // CHECK-COMMON-NOT: unreachable
182 // CHECK-COMMON: ret i32
183 }
184
185 // CHECK-UBSAN-LABEL: @vla_bound
vla_bound(int n)186 void vla_bound(int n) {
187 // CHECK-UBSAN: icmp sgt i32 %[[PARAM:.*]], 0
188 //
189 // CHECK-UBSAN: %[[ARG:.*]] = zext i32 %[[PARAM]] to i64
190 // CHECK-UBSAN-NEXT: call void @__ubsan_handle_vla_bound_not_positive(i8* bitcast ({{.*}} @[[LINE_900]] to i8*), i64 %[[ARG]])
191 #line 900
192 int arr[n * 3];
193 }
194
195 // CHECK-UBSAN-LABEL: @int_float_no_overflow
int_float_no_overflow(__int128 n)196 float int_float_no_overflow(__int128 n) {
197 // CHECK-UBSAN-NOT: call void @__ubsan_handle
198 return n;
199 }
200
201 // CHECK-COMMON-LABEL: @int_float_overflow
int_float_overflow(unsigned __int128 n)202 float int_float_overflow(unsigned __int128 n) {
203 // This is 2**104. FLT_MAX is 2**128 - 2**104.
204 // CHECK-COMMON: %[[INBOUNDS:.*]] = icmp ule i128 %{{.*}}, -20282409603651670423947251286016
205 // CHECK-COMMON-NEXT: br i1 %[[INBOUNDS]]
206
207 // CHECK-UBSAN: call void @__ubsan_handle_float_cast_overflow(
208
209 // CHECK-TRAP: call void @llvm.trap() [[NR_NUW]]
210 // CHECK-TRAP-NEXT: unreachable
211 return n;
212 }
213
214 // CHECK-COMMON-LABEL: @int_fp16_overflow
int_fp16_overflow(int n,__fp16 * p)215 void int_fp16_overflow(int n, __fp16 *p) {
216 // CHECK-COMMON: %[[GE:.*]] = icmp sge i32 %{{.*}}, -65504
217 // CHECK-COMMON: %[[LE:.*]] = icmp sle i32 %{{.*}}, 65504
218 // CHECK-COMMON: %[[INBOUNDS:.*]] = and i1 %[[GE]], %[[LE]]
219 // CHECK-COMMON-NEXT: br i1 %[[INBOUNDS]]
220
221 // CHECK-UBSAN: call void @__ubsan_handle_float_cast_overflow(
222
223 // CHECK-TRAP: call void @llvm.trap() [[NR_NUW]]
224 // CHECK-TRAP-NEXT: unreachable
225 *p = n;
226 }
227
228 // CHECK-COMMON-LABEL: @float_int_overflow
float_int_overflow(float f)229 int float_int_overflow(float f) {
230 // CHECK-COMMON: %[[GE:.*]] = fcmp ogt float %[[F:.*]], 0xC1E0000020000000
231 // CHECK-COMMON: %[[LE:.*]] = fcmp olt float %[[F]], 0x41E0000000000000
232 // CHECK-COMMON: %[[INBOUNDS:.*]] = and i1 %[[GE]], %[[LE]]
233 // CHECK-COMMON-NEXT: br i1 %[[INBOUNDS]]
234
235 // CHECK-UBSAN: %[[CAST:.*]] = bitcast float %[[F]] to i32
236 // CHECK-UBSAN: %[[ARG:.*]] = zext i32 %[[CAST]] to i64
237 // CHECK-UBSAN: call void @__ubsan_handle_float_cast_overflow({{.*}}, i64 %[[ARG]]
238
239 // CHECK-TRAP: call void @llvm.trap() [[NR_NUW]]
240 // CHECK-TRAP-NEXT: unreachable
241 return f;
242 }
243
244 // CHECK-COMMON-LABEL: @long_double_int_overflow
long_double_int_overflow(long double ld)245 int long_double_int_overflow(long double ld) {
246 // CHECK-UBSAN: alloca x86_fp80
247
248 // CHECK-COMMON: %[[GE:.*]] = fcmp ogt x86_fp80 %[[F:.*]], 0xKC01E800000010000000
249 // CHECK-COMMON: %[[LE:.*]] = fcmp olt x86_fp80 %[[F]], 0xK401E800000000000000
250 // CHECK-COMMON: %[[INBOUNDS:.*]] = and i1 %[[GE]], %[[LE]]
251 // CHECK-COMMON-NEXT: br i1 %[[INBOUNDS]]
252
253 // CHECK-UBSAN: store x86_fp80 %[[F]], x86_fp80* %[[ALLOCA:.*]], !nosanitize
254 // CHECK-UBSAN: %[[ARG:.*]] = ptrtoint x86_fp80* %[[ALLOCA]] to i64
255 // CHECK-UBSAN: call void @__ubsan_handle_float_cast_overflow({{.*}}, i64 %[[ARG]]
256
257 // CHECK-TRAP: call void @llvm.trap() [[NR_NUW]]
258 // CHECK-TRAP-NEXT: unreachable
259 return ld;
260 }
261
262 // CHECK-COMMON-LABEL: @float_uint_overflow
float_uint_overflow(float f)263 unsigned float_uint_overflow(float f) {
264 // CHECK-COMMON: %[[GE:.*]] = fcmp ogt float %[[F:.*]], -1.{{0*}}e+00
265 // CHECK-COMMON: %[[LE:.*]] = fcmp olt float %[[F]], 0x41F0000000000000
266 // CHECK-COMMON: %[[INBOUNDS:.*]] = and i1 %[[GE]], %[[LE]]
267 // CHECK-COMMON-NEXT: br i1 %[[INBOUNDS]]
268
269 // CHECK-UBSAN: call void @__ubsan_handle_float_cast_overflow(
270
271 // CHECK-TRAP: call void @llvm.trap() [[NR_NUW]]
272 // CHECK-TRAP-NEXT: unreachable
273 return f;
274 }
275
276 // CHECK-COMMON-LABEL: @fp16_char_overflow
fp16_char_overflow(__fp16 * p)277 signed char fp16_char_overflow(__fp16 *p) {
278 // CHECK-COMMON: %[[GE:.*]] = fcmp ogt float %[[F:.*]], -1.29{{0*}}e+02
279 // CHECK-COMMON: %[[LE:.*]] = fcmp olt float %[[F]], 1.28{{0*}}e+02
280 // CHECK-COMMON: %[[INBOUNDS:.*]] = and i1 %[[GE]], %[[LE]]
281 // CHECK-COMMON-NEXT: br i1 %[[INBOUNDS]]
282
283 // CHECK-UBSAN: call void @__ubsan_handle_float_cast_overflow(
284
285 // CHECK-TRAP: call void @llvm.trap() [[NR_NUW]]
286 // CHECK-TRAP-NEXT: unreachable
287 return *p;
288 }
289
290 // CHECK-COMMON-LABEL: @float_float_overflow
float_float_overflow(double f)291 float float_float_overflow(double f) {
292 // CHECK-COMMON: %[[F:.*]] = call double @llvm.fabs.f64(
293 // CHECK-COMMON: %[[GE:.*]] = fcmp ogt double %[[F]], 0x47EFFFFFE0000000
294 // CHECK-COMMON: %[[LE:.*]] = fcmp olt double %[[F]], 0x7FF0000000000000
295 // CHECK-COMMON: %[[OUTOFBOUNDS:.*]] = and i1 %[[GE]], %[[LE]]
296 // CHECK-COMMON: %[[INBOUNDS:.*]] = xor i1 %[[OUTOFBOUNDS]], true
297 // CHECK-COMMON-NEXT: br i1 %[[INBOUNDS]]
298
299 // CHECK-UBSAN: call void @__ubsan_handle_float_cast_overflow(
300
301 // CHECK-TRAP: call void @llvm.trap() [[NR_NUW]]
302 // CHECK-TRAP-NEXT: unreachable
303 return f;
304 }
305
306 // CHECK-COMMON-LABEL: @int_divide_overflow
307 // CHECK-OVERFLOW-LABEL: @int_divide_overflow
int_divide_overflow(int a,int b)308 int int_divide_overflow(int a, int b) {
309 // CHECK-COMMON: %[[ZERO:.*]] = icmp ne i32 %[[B:.*]], 0
310 // CHECK-OVERFLOW-NOT: icmp ne i32 %{{.*}}, 0
311
312 // CHECK-COMMON: %[[AOK:.*]] = icmp ne i32 %[[A:.*]], -2147483648
313 // CHECK-COMMON-NEXT: %[[BOK:.*]] = icmp ne i32 %[[B]], -1
314 // CHECK-COMMON-NEXT: %[[OVER:.*]] = or i1 %[[AOK]], %[[BOK]]
315 // CHECK-COMMON: %[[OK:.*]] = and i1 %[[ZERO]], %[[OVER]]
316 // CHECK-COMMON: br i1 %[[OK]]
317
318 // CHECK-OVERFLOW: %[[AOK:.*]] = icmp ne i32 %[[A:.*]], -2147483648
319 // CHECK-OVERFLOW-NEXT: %[[BOK:.*]] = icmp ne i32 %[[B:.*]], -1
320 // CHECK-OVERFLOW-NEXT: %[[OK:.*]] = or i1 %[[AOK]], %[[BOK]]
321 // CHECK-OVERFLOW: br i1 %[[OK]]
322
323 // CHECK-TRAP: call void @llvm.trap() [[NR_NUW]]
324 // CHECK-TRAP: unreachable
325 return a / b;
326
327 // CHECK-COMMON: }
328 // CHECK-OVERFLOW: }
329 }
330
331 // CHECK-COMMON-LABEL: @sour_bool
sour_bool(_Bool * p)332 _Bool sour_bool(_Bool *p) {
333 // CHECK-COMMON: %[[OK:.*]] = icmp ule i8 {{.*}}, 1
334 // CHECK-COMMON: br i1 %[[OK]]
335
336 // CHECK-UBSAN: call void @__ubsan_handle_load_invalid_value(i8* bitcast ({{.*}}), i64 {{.*}})
337
338 // CHECK-TRAP: call void @llvm.trap() [[NR_NUW]]
339 // CHECK-TRAP: unreachable
340 return *p;
341 }
342
343 // CHECK-COMMON-LABEL: @ret_nonnull
344 __attribute__((returns_nonnull))
ret_nonnull(int * a)345 int *ret_nonnull(int *a) {
346 // CHECK-COMMON: [[OK:%.*]] = icmp ne i32* {{.*}}, null
347 // CHECK-COMMON: br i1 [[OK]]
348
349 // CHECK-UBSAN: call void @__ubsan_handle_nonnull_return
350
351 // CHECK-TRAP: call void @llvm.trap() [[NR_NUW]]
352 // CHECK-TRAP: unreachable
353 return a;
354 }
355
356 // CHECK-COMMON-LABEL: @call_decl_nonnull
357 __attribute__((nonnull)) void decl_nonnull(int *a);
call_decl_nonnull(int * a)358 void call_decl_nonnull(int *a) {
359 // CHECK-COMMON: [[OK:%.*]] = icmp ne i32* {{.*}}, null
360 // CHECK-COMMON: br i1 [[OK]]
361
362 // CHECK-UBSAN: call void @__ubsan_handle_nonnull_arg
363
364 // CHECK-TRAP: call void @llvm.trap() [[NR_NUW]]
365 // CHECK-TRAP: unreachable
366 decl_nonnull(a);
367 }
368
369 // CHECK-COMMON-LABEL: @call_nonnull_variadic
370 __attribute__((nonnull)) void nonnull_variadic(int a, ...);
call_nonnull_variadic(int a,int * b)371 void call_nonnull_variadic(int a, int *b) {
372 // CHECK-COMMON: [[OK:%.*]] = icmp ne i32* {{.*}}, null
373 // CHECK-COMMON: br i1 [[OK]]
374
375 // CHECK-UBSAN: call void @__ubsan_handle_nonnull_arg
376 // CHECK-UBSAN-NOT: __ubsan_handle_nonnull_arg
377
378 // CHECK-COMMON: call void (i32, ...)* @nonnull_variadic
379 nonnull_variadic(a, b);
380 }
381
382 // CHECK-UBSAN: ![[WEIGHT_MD]] = !{!"branch_weights", i32 1048575, i32 1}
383
384 // CHECK-TRAP: attributes [[NR_NUW]] = { noreturn nounwind }
385