clang/test/CodeGenCXX/cxx20-consteval-crash.cpp

   1 // RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -std=c++20 %s -emit-llvm -o - | FileCheck %s
   2
   3 namespace PR50787 {
   4 // This code would previously cause a crash.
   5 extern int x_;
   6 consteval auto& X() { return x_; }
   7 constexpr auto& x1 = X();
   8 auto x2 = X();
   9
  10 // CHECK: @_ZN7PR507872x_E = external global i32, align 4
  11 // CHECK-NEXT: @_ZN7PR507872x1E = constant i32* @_ZN7PR507872x_E, align 8
  12 // CHECK-NEXT: @_ZN7PR507872x2E = global i32* @_ZN7PR507872x_E, align 4
  13 }
  14
  15 namespace PR51484 {
  16 // This code would previously cause a crash.
  17 struct X { int val; };
  18 consteval X g() { return {0}; }
  19 void f() { g(); }
  20
  21 // CHECK: define dso_local void @_ZN7PR514841fEv() #0 {
  22 // CHECK: entry:
  23 // CHECK-NOT: call i32 @_ZN7PR514841gEv()
  24 // CHECK:  ret void
  25 // CHECK: }
  26 }