llvm-project/clang/test/Modules/declare-use2.cpp

// RUN: rm -rf %t
// RUN: %clang_cc1 -x objective-c++ -fmodules-cache-path=%t -fmodules -fmodules-decluse -fmodule-name=H -I %S/Inputs/declare-use %s -verify

#include "h.h"
#include "e.h"
#include "f.h" // expected-error {{use of a module not declared used}}
const int h2 = h1+e+f;
Module use declarations (II) Review: http://llvm-reviews.chandlerc.com/D1546. I have picked up this patch form Lawrence (http://llvm-reviews.chandlerc.com/D1063) and did a few changes. From the original change description (updated as appropriate): This patch adds a check that ensures that modules only use modules they have so declared. To this end, it adds a statement on intended module use to the module.map grammar: use module-id A module can then only use headers from other modules if it 'uses' them. This enforcement is off by default, but may be turned on with the new option -fmodules-decluse. When enforcing the module semantics, we also need to consider a source file part of a module. This is achieved with a compiler option -fmodule-name=<module-id>. The compiler at present only applies restrictions to the module directly being built. llvm-svn: 191283 2013-09-24 17:14:14 +08:00			`// RUN: rm -rf %t`
			`// RUN: %clang_cc1 -x objective-c++ -fmodules-cache-path=%t -fmodules -fmodules-decluse -fmodule-name=H -I %S/Inputs/declare-use %s -verify`

			`#include "h.h"`
			`#include "e.h"`
			`#include "f.h" // expected-error {{use of a module not declared used}}`
			`const int h2 = h1+e+f;`