gcc/testsuite/g++.dg/pr95768.C

   1 /* PR c++/95768 - pretty-printer ICE on -Wuninitialized with allocated storage
   2    { dg-do compile }
   3    { dg-options "-O2 -Wall -Wno-array-bounds" } */
   4
   5 extern "C" void *malloc (__SIZE_TYPE__);
   6
   7 struct f
   8 {
   9   int i;
  10   static int e (int);
  11   void operator= (int) { e (i); }
  12 };
  13
  14 struct m {
  15   int i;
  16   f length;
  17 };
  18
  19 struct n {
  20   m *o() { return (m *)this; }
  21 };
  22
  23 struct p {
  24   n *header;
  25   p () {
  26     header = (n *)malloc (0);
  27     m b = *header->o();       // { dg-warning "\\\[-Wuninitialized" }
  28     b.length = 0;
  29   }
  30 };
  31
  32 void detach2() { p(); }