If a module map is found in a relative -I path, convert the filenames within it

to absolute paths when building the includes file for the module. Without this,
the module build would fail, because the relative paths we were using are not
necessarily relative to a directory in our include path.

llvm-svn: 203528

1 files changed, 11 insertions, 0 deletions

diff --git a/clang/test/Modules/include-relative.c b/clang/test/Modules/include-relative.c
new file mode 100644
index 00000000000..264df5f3189
--- /dev/null
+++ b/clang/test/Modules/include-relative.c
@@ -0,0 +1,11 @@
+// RUN: rm -rf %t
+// RUN: mkdir %t
+// RUN: cp -r %S/Inputs/include-relative %t/include-relative
+// RUN: cd %t
+// RUN: %clang_cc1 -fmodules -x c -verify -fmodules-cache-path=%t -I include-relative %s
+
+// expected-no-diagnostics
+
+#include "a.h"
+
+int f() { return n; }