| // 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:" |
| // 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:" |
| // 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:" |
| // 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:" |
| |
| // 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:" |
| // 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:" |
| // 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:" |
| // 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:" |
| |
| #include <stdlib.h> |
| |
| typedef char *__attribute__((align_value(0x8000))) aligned_char; |
| |
| struct ac_struct { |
| aligned_char a; |
| }; |
| |
| char *load_from_ac_struct(struct ac_struct *x) { |
| return x->a; |
| } |
| |
| int main(int argc, char* argv[]) { |
| char *ptr = (char *)malloc(2); |
| |
| struct ac_struct x; |
| x.a = ptr + 1; // FIXME: it is weird that this does not also have an assumption. |
| load_from_ac_struct(&x); |
| // CHECK: {{.*}}alignment-assumption-{{.*}}.cpp:[[@LINE-9]]:13: runtime error: assumption of 32768 byte alignment for pointer of type 'aligned_char' (aka 'char *') failed |
| // CHECK: {{.*}}alignment-assumption-{{.*}}.cpp:[[@LINE-17]]:30: note: alignment assumption was specified here |
| // CHECK: 0x{{.*}}: note: address is {{.*}} aligned, misalignment offset is {{.*}} byte |
| |
| free(ptr); |
| |
| return 0; |
| } |