1 // RUN: %clang   -x c   -fsanitize=alignment -O0 %s -o %t && %run %t 2>&1 | FileCheck %s --implicit-check-not=" assumption " --implicit-check-not="note:" --implicit-check-not="error:"
2 // RUN: %clang   -x c   -fsanitize=alignment -O1 %s -o %t && %run %t 2>&1 | FileCheck %s --implicit-check-not=" assumption " --implicit-check-not="note:" --implicit-check-not="error:"
3 // RUN: %clang   -x c   -fsanitize=alignment -O2 %s -o %t && %run %t 2>&1 | FileCheck %s --implicit-check-not=" assumption " --implicit-check-not="note:" --implicit-check-not="error:"
4 // RUN: %clang   -x c   -fsanitize=alignment -O3 %s -o %t && %run %t 2>&1 | FileCheck %s --implicit-check-not=" assumption " --implicit-check-not="note:" --implicit-check-not="error:"
5 
6 // RUN: %clang   -x c++ -fsanitize=alignment -O0 %s -o %t && %run %t 2>&1 | FileCheck %s --implicit-check-not=" assumption " --implicit-check-not="note:" --implicit-check-not="error:"
7 // RUN: %clang   -x c++ -fsanitize=alignment -O1 %s -o %t && %run %t 2>&1 | FileCheck %s --implicit-check-not=" assumption " --implicit-check-not="note:" --implicit-check-not="error:"
8 // RUN: %clang   -x c++ -fsanitize=alignment -O2 %s -o %t && %run %t 2>&1 | FileCheck %s --implicit-check-not=" assumption " --implicit-check-not="note:" --implicit-check-not="error:"
9 // RUN: %clang   -x c++ -fsanitize=alignment -O3 %s -o %t && %run %t 2>&1 | FileCheck %s --implicit-check-not=" assumption " --implicit-check-not="note:" --implicit-check-not="error:"
10 
11 #include <stdlib.h>
12 
13 typedef char *__attribute__((align_value(0x8000))) aligned_char;
14 
15 struct ac_struct {
16   aligned_char a;
17 };
18 
19 char *load_from_ac_struct(struct ac_struct *x) {
20   return x->a;
21 }
22 
23 int main(int argc, char* argv[]) {
24   char *ptr = (char *)malloc(2);
25 
26   struct ac_struct x;
27   x.a = ptr + 1; // FIXME: it is weird that this does not also have an assumption.
28   load_from_ac_struct(&x);
29   // CHECK: {{.*}}alignment-assumption-{{.*}}.cpp:[[@LINE-9]]:13: runtime error: assumption of 32768 byte alignment for pointer of type 'aligned_char' (aka 'char *') failed
30   // CHECK: {{.*}}alignment-assumption-{{.*}}.cpp:[[@LINE-17]]:30: note: alignment assumption was specified here
31   // CHECK: 0x{{.*}}: note: address is {{.*}} aligned, misalignment offset is {{.*}} byte
32 
33   free(ptr);
34 
35   return 0;
36 }
37