[Bug c++/77433] New: warn about pointer that escapes its scope

[manu at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77433

            Bug ID: 77433
           Summary: warn about pointer that escapes its scope
           Product: gcc
           Version: 7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: manu at gcc dot gnu.org
  Target Milestone: ---

void bar(int *x);
int foo(int a)
{
    int *b = 0;
    if (a) {
        int x[] = {0};
        b = x;
    }
    bar(b);
    return 0;
}

Real bug in GCC: PR77421

static void
dump_hsa_symbol (FILE *f, hsa_symbol *symbol)
{
  const char *name;
  if (symbol->m_name)
    name = symbol->m_name;
  else
  {
    char buf[64];
    sprintf (buf, "__%s_%i", hsa_seg_name (symbol->m_segment),
       symbol->m_name_number);
     name = buf;
  }
  fprintf (f, "align(%u) %s_%s %s",
           hsa_byte_alignment (symbol->m_align),
           hsa_seg_name(symbol->m_segment),
           hsa_type_name(symbol->m_type & ~BRIG_TYPE_ARRAY_MASK),
           name);
  ....
}