clang/test/SemaCXX/warn-unsafe-buffer-usage-fixits-add-assign.cpp

   1 // RUN: %clang_cc1 -std=c++20 -Wunsafe-buffer-usage \
   2 // RUN:            -fsafe-buffer-usage-suggestions \
   3 // RUN:            -fdiagnostics-parseable-fixits %s 2>&1 | FileCheck %s
   4 void foo(int * , int *);
   5
   6 void add_assign_test(unsigned int n, int *a, int y) {
   7   int *p = new int[10];
   8   // CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:3-[[@LINE-1]]:11}:"std::span<int> p"
   9   // CHECK: fix-it:"{{.*}}":{[[@LINE-2]]:12-[[@LINE-2]]:12}:"{"
  10   // CHECK: fix-it:"{{.*}}":{[[@LINE-3]]:23-[[@LINE-3]]:23}:", 10}"
  11   p += 2;
  12   // CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:3-[[@LINE-1]]:7}:"p = p.subspan("
  13   // CHECK: fix-it:"{{.*}}":{[[@LINE-2]]:9-[[@LINE-2]]:9}:")"
  14
  15   int *r = p;
  16   // CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:3-[[@LINE-1]]:11}:"std::span<int> r"
  17   // CHECK: fix-it:"{{.*}}":{[[@LINE-2]]:12-[[@LINE-2]]:12}:"{"
  18   // CHECK: fix-it:"{{.*}}":{[[@LINE-3]]:13-[[@LINE-3]]:13}:", <# placeholder #>}"
  19   while (*r != 0) {
  20   // CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:10-[[@LINE-1]]:11}:""
  21   // CHECK: fix-it:"{{.*}}":{[[@LINE-2]]:12-[[@LINE-2]]:12}:"[0]"
  22     r += 2;
  23     // CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:5-[[@LINE-1]]:9}:"r = r.subspan("
  24     // CHECK: fix-it:"{{.*}}":{[[@LINE-2]]:11-[[@LINE-2]]:11}:")"
  25   }
  26
  27   if (*p == 0) {
  28   // CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:7-[[@LINE-1]]:8}:""
  29   // CHECK: fix-it:"{{.*}}":{[[@LINE-2]]:9-[[@LINE-2]]:9}:"[0]"
  30     p += n;
  31     // CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:5-[[@LINE-1]]:9}:"p = p.subspan("
  32     // CHECK: fix-it:"{{.*}}":{[[@LINE-2]]:11-[[@LINE-2]]:11}:")"
  33   }
  34
  35   if (*p == 1)
  36   // CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:7-[[@LINE-1]]:8}:""
  37   // CHECK: fix-it:"{{.*}}":{[[@LINE-2]]:9-[[@LINE-2]]:9}:"[0]"
  38     p += 3;
  39   // CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:5-[[@LINE-1]]:9}:"p = p.subspan("
  40   // CHECK: fix-it:"{{.*}}":{[[@LINE-2]]:11-[[@LINE-2]]:11}:")"
  41
  42   a += -9;
  43   // CHECK-NOT: fix-it:"{{.*}}":{[[@LINE-1]]:5-[[@LINE-1]]:9}:"p = p.subspan("
  44
  45   a += y;
  46   // CHECK-NOT: fix-it:"{{.*}}":{[[@LINE-1]]:5-[[@LINE-1]]:9}:"p = p.subspan("
  47 }
  48
  49 int expr_test(unsigned x, int *q, int y) {
  50   char *p = new char[8];
  51   // CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:3-[[@LINE-1]]:12}:"std::span<char> p"
  52   // CHECK: fix-it:"{{.*}}":{[[@LINE-2]]:13-[[@LINE-2]]:13}:"{"
  53   // CHECK: fix-it:"{{.*}}":{[[@LINE-3]]:24-[[@LINE-3]]:24}:", 8}"
  54   p += (x + 1);
  55   // CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:3-[[@LINE-1]]:7}:"p = p.subspan"
  56
  57   q += (y + 7);
  58   // CHECK-NOT: fix-it:"{{.*}}":{[[@LINE-1]]:3-[[@LINE-1]]:7}:"q = q.subspan"
  59 }