clang/test/SemaCXX/constexpr-array-init.cpp

   1 // RUN: %clang_cc1 -std=c++20 -verify %s
   2
   3 /// This test case used to crash in constant evaluation
   4 /// because of the two-dimensional array with an array
   5 /// filler expression.
   6
   7 /// expected-no-diagnostics
   8 struct Foo {
   9   int a;
  10   constexpr Foo()
  11       : a(get_int()) {
  12   }
  13
  14   constexpr int get_int() const {
  15     return 5;
  16   }
  17 };
  18
  19 static constexpr Foo bar[2][1] = {
  20     {{}},
  21 };
  22 static_assert(bar[0][0].a == 5);
  23 static_assert(bar[1][0].a == 5);
  24