1 // RUN: %clang -fPIC -shared -O2 -D_FORTIFY_SOURCE=2 -D_DSO %s -o %t.so
2 // RUN: %clang_asan -o %t %t.so %s
3 // RUN: not %run %t 2>&1 | FileCheck %s
4 // REQUIRES: glibc-2.27
5 #ifdef _DSO
6 #include <stdio.h>
7 #include <stdlib.h>
8 #include <string.h>
foo()9 __attribute__((noinline)) int foo() {
10   char *write_buffer = (char *)malloc(1);
11   // CHECK: AddressSanitizer: heap-buffer-overflow
12   sprintf(write_buffer, "%s_%s", "one", "two");
13   return write_buffer[0];
14 }
15 #else
16 extern int foo();
main()17 int main() { return foo(); }
18 #endif
19