redefinition of '__true_type' struct __true_type {}; - Bug 27991

[CrisCristescu]

Summary

There is an error when building self-hosted clang with modules:
/home/biancacr/clang_build_/src/tools/clang/test/Modules/Inputs/PR27991/vector:2:8: error: redefinition of 'true_type'
struct true_type {};

^

This is cause by include cycles when building the module.
This patch solves the issue by creating only one module which contains both the files that created the cycle includes.

[rsmith]

Makes sense to me.

[rsmith]

include/llvm/module.modulemap

121–126

You should be able to remove all of these too.

[v.g.vassilev]

Landed in r272877.

include/llvm/module.modulemap

121–126

Done.