<rdar://problem/13615607> Include SDK version information in the module hash.

This is a Darwin-SDK-specific hash criteria used to identify a
particular SDK without having to hash the contents of all of its
headers. If other platforms have such versioned files, we should add
those checks here.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179346 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 32 insertions, 0 deletions

diff --git a/test/Modules/system_version.m b/test/Modules/system_version.m
new file mode 100644
index 0000000000..2beddf4e1d
--- /dev/null
+++ b/test/Modules/system_version.m
@@ -0,0 +1,32 @@
+// Test checking that we're hashing a system version file in the
+// module hash.
+// REQUIRES: shell
+
+// First, build a system root.
+// RUN: rm -rf %t
+// RUN: mkdir -p %t/usr/include
+// RUN: cp %S/Inputs/Modified/A.h %t/usr/include
+// RUN: cp %S/Inputs/Modified/B.h %t/usr/include
+// RUN: cp %S/Inputs/Modified/module.map %t/usr/include
+
+// Run once with no system version file. We should end up with one module.
+// RUN: %clang_cc1 -fmodules-cache-path=%t/cache -fmodules -isysroot %t %s -verify
+// RUN: ls -R %t | grep -c ModA.pcm| grep 1
+
+// Add a system version file and run again. We should now have two
+// module variants.
+// RUN: mkdir -p %t/System/Library/CoreServices
+// RUN: echo "hello" > %t/System/Library/CoreServices/SystemVersion.plist
+// RUN: %clang_cc1 -fmodules-cache-path=%t/cache -fmodules -isysroot %t %s -verify
+// RUN: ls -R %t | grep -c ModA.pcm| grep 2
+
+// Change the system version file and run again. We should now have three
+// module variants.
+// RUN: mkdir -p %t/System/Library/CoreServices
+// RUN: echo "modules" > %t/System/Library/CoreServices/SystemVersion.plist
+// RUN: %clang_cc1 -fmodules-cache-path=%t/cache -fmodules -isysroot %t %s -verify
+// RUN: ls -R %t | grep -c ModA.pcm| grep 3
+
+// expected-no-diagnostics
+@import ModA;
+