modernc.org/cc@v1.0.1/testdata/gcc-6.3.0/gcc/testsuite/gcc.c-torture/compile/200031109-1.c (about)

     1  /* For a short time on the tree-ssa branch this would warn that
     2     value was not initialized as it was optimizing !(value = (m?1:2))
     3     to 0 and not setting value before.  */
     4  
     5  int t(int m)
     6  {
     7    int value;
     8    if (!(value = (m?1:2)))
     9      value = 0;
    10    return value;
    11  }