0ea3d88bdb
Including select builtin headers in system modules is a workaround for module cycles, primarily in Apple's Darwin module that includes all of its C standard library headers. The workaround is problematic because it doesn't include all of the builtin headers (inttypes.h is notably absent), and it also doesn't include C++ headers. The straightforward for for this is to make top level modules for all of the C standard library headers and unwind.h in C++, clang, and the OS. However, doing so in clang before the OS modules are ready re-introduces the module cycles. Add a -fbuiltin-headers-in-system-modules option to control if the special builtin headers belong to system modules or builtin modules. Pass the option by default for Apple. Reviewed By: ChuanqiXu, Bigcheese, benlangmuir Differential Revision: https://reviews.llvm.org/D159483
6 lines
364 B
Objective-C
6 lines
364 B
Objective-C
// RUN: rm -rf %t
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// RUN: %clang_cc1 -fmodules -fimplicit-module-maps -fbuiltin-headers-in-system-modules -fmodules-cache-path=%t -I %S/Inputs/shadowed-submodule/Foo -I %S/Inputs/shadowed-submodule/A2 %s -verify
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@import Foo; // expected-error {{module 'A' was built in directory}}
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// expected-note@shadowed-submodule.m:4 {{imported by module 'Foo'}}
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