compiler-rt/test/asan/TestCases/Linux/printf-fortify-5.c

   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 /// Incompatible with pass_object_info style fortified source since glibc 2.40.
   5 // REQUIRES: glibc-2.27 && !glibc-2.40
   6 #ifdef _DSO
   7 #include <stdio.h>
   8 #include <stdlib.h>
   9 #include <string.h>
  10 __attribute__((noinline)) int foo() {
  11   char *read_buffer = (char *)malloc(1);
  12   // CHECK: AddressSanitizer: heap-buffer-overflow
  13   fprintf(stderr, read_buffer, 4096);
  14   return read_buffer[0];
  15 }
  16 #else
  17 extern int foo();
  18 int main() { return foo(); }
  19 #endif