llvm-project/clang/test/SemaTemplate/default-expr-arguments-3.cpp

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// RUN: %clang_cc1 -std=c++14 -verify -ast-dump %s | FileCheck %s
// expected-no-diagnostics
// CHECK: FunctionDecl {{.*}} used func 'void ()'
// CHECK-NEXT: TemplateArgument type 'int'
// CHECK: LambdaExpr {{.*}} '(lambda at
// CHECK: ParmVarDecl {{.*}} used f 'foo' cinit
// CHECK-NEXT: DeclRefExpr {{.*}} 'foo' EnumConstant {{.*}} 'a' 'foo'
namespace PR28795 {
template<typename T>
void func() {
enum class foo { a, b };
auto bar = [](foo f = foo::a) { return f; };
bar();
}
void foo() {
func<int>();
}
}
// CHECK: ClassTemplateSpecializationDecl {{.*}} struct class2 definition
// CHECK: TemplateArgument type 'int'
// CHECK: LambdaExpr {{.*}} '(lambda at
// CHECK: ParmVarDecl {{.*}} used f 'foo' cinit
// CHECK-NEXT: DeclRefExpr {{.*}} 'foo' EnumConstant {{.*}} 'a' 'foo'
// Template struct case:
template <class T> struct class2 {
void bar() {
enum class foo { a, b };
[](foo f = foo::a) { return f; }();
}
};
template struct class2<int>;
// CHECK: FunctionTemplateDecl {{.*}} f1
// CHECK-NEXT: TemplateTypeParmDecl {{.*}} typename depth 0 index 0 T
// CHECK-NEXT: FunctionDecl {{.*}} f1 'void ()'
// CHECK: FunctionDecl {{.*}} f1 'void ()'
// CHECK-NEXT: TemplateArgument type 'int'
// CHECK: ParmVarDecl {{.*}} n 'foo' cinit
// CHECK-NEXT: DeclRefExpr {{.*}} 'foo' EnumConstant {{.*}} 'a' 'foo'
template<typename T>
void f1() {
enum class foo { a, b };
struct S {
int g1(foo n = foo::a);
};
}
template void f1<int>();