1*b5af5787SReid Kleckner // RUN: %clang_cl_asan -Od %s -Fe%t
2*b5af5787SReid Kleckner // RUN: %env_asan_opts=handle_sigfpe=1 not %run %t 2>&1 | FileCheck %s
3*b5af5787SReid Kleckner 
4*b5af5787SReid Kleckner // Test the error output from misaligned SSE2 memory access. This is a READ
5*b5af5787SReid Kleckner // memory access. Windows appears to always provide an address of -1 for these
6*b5af5787SReid Kleckner // types of faults, and there doesn't seem to be a way to distinguish them from
7*b5af5787SReid Kleckner // other types of access violations without disassembling.
8*b5af5787SReid Kleckner 
9*b5af5787SReid Kleckner #include <emmintrin.h>
10*b5af5787SReid Kleckner #include <stdio.h>
11*b5af5787SReid Kleckner 
test()12*b5af5787SReid Kleckner __m128i test() {
13*b5af5787SReid Kleckner   char buffer[17] = {};
14*b5af5787SReid Kleckner   __m128i a = _mm_load_si128((__m128i *)buffer);
15*b5af5787SReid Kleckner   __m128i b = _mm_load_si128((__m128i *)(&buffer[0] + 1));
16*b5af5787SReid Kleckner   return _mm_or_si128(a, b);
17*b5af5787SReid Kleckner }
18*b5af5787SReid Kleckner 
main()19*b5af5787SReid Kleckner int main() {
20*b5af5787SReid Kleckner   puts("before alignment fault");
21*b5af5787SReid Kleckner   fflush(stdout);
22*b5af5787SReid Kleckner   volatile __m128i v = test();
23*b5af5787SReid Kleckner   return 0;
24*b5af5787SReid Kleckner }
25*b5af5787SReid Kleckner // CHECK: before alignment fault
26*b5af5787SReid Kleckner // CHECK: ERROR: AddressSanitizer: access-violation on unknown address {{0x[fF]*}}
27*b5af5787SReid Kleckner // CHECK-NEXT: The signal is caused by a READ memory access.
28*b5af5787SReid Kleckner // CHECK-NEXT: #0 {{.*}} in test(void) {{.*}}misalignment.cpp:{{.*}}
29