clang/test/CodeGenCXX/flexible-array-init.cpp

   1 // RUN: %clang_cc1 -triple i386-unknown-unknown -emit-llvm -o - %s | FileCheck %s
   2 // RUN: %clang_cc1 -triple i386-unknown-unknown -emit-llvm-only -verify -DFAIL1 %s
   3 // RUN: %clang_cc1 -triple i386-unknown-unknown -emit-llvm-only -verify -DFAIL2 %s
   4 // RUN: %clang_cc1 -triple i386-unknown-unknown -emit-llvm-only -verify -DFAIL3 %s
   5 // RUN: %clang_cc1 -triple i386-unknown-unknown -emit-llvm-only -verify -DFAIL4 %s
   6
   7 struct A { int x; int y[]; };
   8 A a = { 1, 7, 11 };
   9 // CHECK: @a ={{.*}} global { i32, [2 x i32] } { i32 1, [2 x i32] [i32 7, i32 11] }
  10
  11 A b = { 1, { 13, 15 } };
  12 // CHECK: @b ={{.*}} global { i32, [2 x i32] } { i32 1, [2 x i32] [i32 13, i32 15] }
  13
  14 char f();
  15 #ifdef FAIL1
  16 A c = { f(), { f(), f() } }; // expected-error {{cannot compile this flexible array initializer yet}}
  17 #endif
  18 #ifdef FAIL2
  19 void g() {
  20   static A d = { f(), { f(), f() } }; // expected-error {{cannot compile this flexible array initializer yet}}
  21 }
  22 #endif
  23 #ifdef FAIL3
  24 struct B { int x; char y; char z[]; };
  25 B e = {f(), f(), f(), f()}; // expected-error {{cannot compile this flexible array initializer yet}}
  26 #endif
  27 #ifdef FAIL4
  28 union { char a[]; } z = {};
  29 union { char a[]; } z0 = {z.a[0]}; // expected-error {{cannot compile this flexible array initializer yet}}
  30 char keep() {   return z0.a[0]; }
  31 #endif
  32
  33 namespace zero_initializer {
  34 A a0{0, 0}, a1{0, {0, 0}};
  35 // CHECK: @_ZN16zero_initializer2a0E = global { i32, [1 x i32] } zeroinitializer,
  36 // CHECK: @_ZN16zero_initializer2a1E = global { i32, [2 x i32] } zeroinitializer,
  37
  38 struct S { int x[]; };
  39
  40 S s{0};
  41 // CHECK: @_ZN16zero_initializer1sE = global { [1 x i32] } zeroinitializer,
  42 }