================
@@ -0,0 +1,63 @@
+// RUN: %clang_cc1 %s -std=c++2c -fsyntax-only -verify
+namespace std {
+template <typename T>
+struct initializer_list {
+ const T* a;
+ const T* b;
+ initializer_list(T*, T*) {}
+};
+}
+
+void bad() {
+ template for; // expected-error {{expected '(' after 'for'}}
+ template for (); // expected-error {{expected expression}} expected-error
{{expected ';' in 'for' statement specifier}} expected-error {{expansion
statement must be a range-based for loop}} expected-error {{TODO (expansion
statements)}}
+ template for (;); // expected-error {{expected ';' in 'for' statement
specifier}} expected-error {{expansion statement must be a range-based for
loop}} expected-error {{TODO (expansion statements)}}
+ template for (;;); // expected-error {{expansion statement must be a
range-based for loop}} expected-error {{TODO (expansion statements)}}
+ template for (int x;;); // expected-error {{expansion statement must be a
range-based for loop}} expected-error {{TODO (expansion statements)}}
+ template for (x : {1}); // expected-error {{expansion statement requires
type for expansion variable}} expected-error {{TODO (expansion statements)}}
+ template for (: {1}); // expected-error {{expected expression}}
expected-error {{expected ';' in 'for' statement specifier}} expected-error
{{expansion statement must be a range-based for loop}} expected-error {{TODO
(expansion statements)}}
+ template for (auto y : {1})]; // expected-error {{expected expression}}
expected-error {{TODO (expansion statements)}}
+ template for (auto y : {1}; // expected-error {{expected ')'}} expected-note
{{to match this '('}} expected-error {{TODO (expansion statements)}}
+ template for (extern auto y : {1, 2}); // expected-error {{expansion
variable 'y' may not be declared 'extern'}} expected-error {{TODO (expansion
statements)}}
+ template for (extern static auto y : {1, 2}); // expected-error {{cannot
combine with previous 'extern' declaration specifier}} expected-error
{{expansion variable 'y' may not be declared 'extern'}} expected-error {{TODO
(expansion statements)}}
+ template for (static auto y : {1, 2}); // expected-error {{expansion
variable 'y' may not be declared 'static'}} expected-error {{TODO (expansion
statements)}}
+ template for (thread_local auto y : {1, 2}); // expected-error
{{'thread_local' variables must have global storage}} expected-error {{TODO
(expansion statements)}}
+ template for (static thread_local auto y : {1, 2}); // expected-error
{{expansion variable 'y' may not be declared 'thread_local'}} expected-error
{{TODO (expansion statements)}}
+ template for (__thread auto y : {1, 2}); // expected-error {{'__thread'
variables must have global storage}} expected-error {{TODO (expansion
statements)}}
+ template for (static __thread auto y : {1, 2}); // expected-error
{{expansion variable 'y' may not be declared 'static'}} expected-error {{TODO
(expansion statements)}}
+ template for (constinit auto y : {1, 2}); // expected-error {{local variable
cannot be declared 'constinit'}} expected-error {{TODO (expansion statements)}}
+ template for (consteval auto y : {1, 2}); // expected-error {{consteval can
only be used in function declarations}} expected-error {{TODO (expansion
statements)}}
+ template for (int x; extern auto y : {1, 2}); // expected-error {{expansion
variable 'y' may not be declared 'extern'}} expected-error {{TODO (expansion
statements)}}
+ template for (int x; extern static auto y : {1, 2}); // expected-error
{{cannot combine with previous 'extern' declaration specifier}} expected-error
{{expansion variable 'y' may not be declared 'extern'}} expected-error {{TODO
(expansion statements)}}
+ template for (int x; static auto y : {1, 2}); // expected-error {{expansion
variable 'y' may not be declared 'static'}} expected-error {{TODO (expansion
statements)}}
+ template for (int x; thread_local auto y : {1, 2}); // expected-error
{{'thread_local' variables must have global storage}} expected-error {{TODO
(expansion statements)}}
+ template for (int x; static thread_local auto y : {1, 2}); // expected-error
{{expansion variable 'y' may not be declared 'thread_local'}} expected-error
{{TODO (expansion statements)}}
+ template for (int x; __thread auto y : {1, 2}); // expected-error
{{'__thread' variables must have global storage}} expected-error {{TODO
(expansion statements)}}
+ template for (int x; static __thread auto y : {1, 2}); // expected-error
{{expansion variable 'y' may not be declared 'static'}} expected-error {{TODO
(expansion statements)}}
+ template for (int x; constinit auto y : {1, 2}); // expected-error {{local
variable cannot be declared 'constinit'}} expected-error {{TODO (expansion
statements)}}
+ template for (int x; consteval auto y : {1, 2}); // expected-error
{{consteval can only be used in function declarations}} expected-error {{TODO
(expansion statements)}}
+ template for (auto y : {abc, -+, }); // expected-error {{use of undeclared
identifier 'abc'}} expected-error {{expected expression}} expected-error {{TODO
(expansion statements)}}
+ template for (3 : "error") // expected-error {{expansion statement
declaration must declare a variable}} \
+ expected-error {{expansion statement must be a
range-based for loop}} expected-error {{TODO (expansion statements)}}
+ ;
+ template while (true) {} // expected-error {{expected '<' after 'template'}}
----------------
Endilll wrote:
Can we have a better error message here? Maybe something along the lines of
"'template' cannot be followed by 'while'", potentially followed by a fixit.
I'd also like to see tests for `for template` and `template do`
https://github.com/llvm/llvm-project/pull/169681
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