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
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+++ b/test/Modules/system_version.m
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+// 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 -I %t/usr/include %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 -I %t/usr/include %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 -I %t/usr/include %s -verify
+// RUN: ls -R %t | grep -c ModA.pcm| grep 3
+
+// expected-no-diagnostics
+@import ModA;
+