compiler-rt/test/msan/pr32842.c

   1 // Regression test for https://bugs.llvm.org/show_bug.cgi?id=32842
   2 //
   3 // RUN: %clang_msan -g %s -o %t
   4 // RUN: not %run %t 2>&1 | FileCheck  %s
   5
   6 struct iphdr {
   7   unsigned char pad1: 2, ihl:4, pad2: 2;
   8 };
   9
  10 int raw_send_hdrinc(unsigned long int length) {
  11   struct iphdr iph;
  12   if (iph.ihl * 4 > length) {
  13     return 1;
  14   }
  15   return 0;
  16 }
  17
  18 int main(int argc, char *argv[]) {
  19   return raw_send_hdrinc(12);
  20 }
  21
  22 // CHECK: WARNING: MemorySanitizer: use-of-uninitialized-value