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