1// RUN: %clangxx_msan -fno-sanitize-memory-param-retval -O0 %s -o %t && %run %t >%t.out 2>&1
2// RUN: %clangxx_msan -fno-sanitize-memory-param-retval -O1 %s -o %t && %run %t >%t.out 2>&1
3// RUN: %clangxx_msan -fno-sanitize-memory-param-retval -O2 %s -o %t && %run %t >%t.out 2>&1
4// RUN: %clangxx_msan -fno-sanitize-memory-param-retval -O3 %s -o %t && %run %t >%t.out 2>&1
5
6// Test that (no_sanitize_memory) functions DO NOT propagate shadow.
7
8#include <stdlib.h>
9#include <stdio.h>
10
11__attribute__((noinline))
12__attribute__((weak))
13__attribute__((no_sanitize_memory))
14int f(int x) {
15 return x;
16}
17
18int main(void) {
19 int x;
20 int * volatile p = &x;
21 int y = f(x: *p);
22 if (y)
23 exit(status: 0);
24 return 0;
25}
26

source code of compiler-rt/test/msan/no_sanitize_memory_prop.cpp