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author | Richard Smith <richard-llvm@metafoo.co.uk> | 2017-10-09 23:42:09 +0000 |
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committer | Richard Smith <richard-llvm@metafoo.co.uk> | 2017-10-09 23:42:09 +0000 |
commit | b87720b77aee65e30a6181e239cbf708f4d29259 (patch) | |
tree | 5c9c3dc2f06f6e6a741f4833e2458858a1f57ad7 /clang/test/CXX/modules-ts/basic/basic.def.odr/p6/global-vs-module.cpp | |
parent | 8b53f7ca6daa21ea4510c0d2b35bee7edade6b0e (diff) | |
download | bcm5719-llvm-b87720b77aee65e30a6181e239cbf708f4d29259.tar.gz bcm5719-llvm-b87720b77aee65e30a6181e239cbf708f4d29259.zip |
[Modules TS] Module ownership semantics for redeclarations.
When declaring an entity in the "purview" of a module, it's never a
redeclaration of an entity in the purview of a default module or in no module
("in the global module"). Don't consider those other declarations as possible
redeclaration targets if they're not visible, and reject any cases where we
pick a prior visible declaration that violates this rule.
llvm-svn: 315251
Diffstat (limited to 'clang/test/CXX/modules-ts/basic/basic.def.odr/p6/global-vs-module.cpp')
-rw-r--r-- | clang/test/CXX/modules-ts/basic/basic.def.odr/p6/global-vs-module.cpp | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/clang/test/CXX/modules-ts/basic/basic.def.odr/p6/global-vs-module.cpp b/clang/test/CXX/modules-ts/basic/basic.def.odr/p6/global-vs-module.cpp new file mode 100644 index 00000000000..cceca5106ca --- /dev/null +++ b/clang/test/CXX/modules-ts/basic/basic.def.odr/p6/global-vs-module.cpp @@ -0,0 +1,55 @@ +// RUN: %clang_cc1 -fmodules-ts -verify -std=c++17 %s +// RUN: %clang_cc1 -fmodules-ts -verify -std=c++17 %s -DEXPORT +// RUN: %clang_cc1 -fmodules-ts -verify -std=c++17 %s -DUSING + +#ifndef NO_GLOBAL +extern int var; // expected-note {{previous declaration is here}} +int func(); // expected-note {{previous declaration is here}} +struct str; // expected-note {{previous declaration is here}} +using type = int; + +template<typename> extern int var_tpl; // expected-note {{previous declaration is here}} +template<typename> int func_tpl(); // expected-note-re {{{{previous declaration is here|target of using declaration}}}} +template<typename> struct str_tpl; // expected-note {{previous declaration is here}} +template<typename> using type_tpl = int; // expected-note {{previous declaration is here}} + +typedef int type; +namespace ns { using ::func; } +namespace ns_alias = ns; +#endif + +export module M; + +#ifdef USING +using ::var; +using ::func; +using ::str; +using ::type; +using ::var_tpl; +using ::func_tpl; // expected-note {{using declaration}} +using ::str_tpl; +using ::type_tpl; +#endif + +#ifdef EXPORT +export { +#endif + +extern int var; // expected-error {{declaration of 'var' in module M follows declaration in the global module}} +int func(); // expected-error {{declaration of 'func' in module M follows declaration in the global module}} +struct str; // expected-error {{declaration of 'str' in module M follows declaration in the global module}} +using type = int; + +template<typename> extern int var_tpl; // expected-error {{declaration of 'var_tpl' in module M follows declaration in the global module}} +// FIXME: Is this the right diagnostic in the -DUSING case? +template<typename> int func_tpl(); // expected-error-re {{{{declaration of 'func_tpl' in module M follows declaration in the global module|conflicts with target of using declaration}}}} +template<typename> struct str_tpl; // expected-error {{declaration of 'str_tpl' in module M follows declaration in the global module}} +template<typename> using type_tpl = int; // expected-error {{declaration of 'type_tpl' in module M follows declaration in the global module}} + +typedef int type; +namespace ns { using ::func; } +namespace ns_alias = ns; + +#ifdef EXPORT +} +#endif |