1 files changed, 35 insertions, 0 deletions
diff --git a/test/Modules/implicit-private-canonical.m b/test/Modules/implicit-private-canonical.m
new file mode 100644
index 0000000000000..96b6c4a3464db
--- /dev/null
+++ b/test/Modules/implicit-private-canonical.m
@@ -0,0 +1,35 @@
+// RUN: rm -rf %t
+// Build PCH using A, with adjacent private module APrivate, which winds up being implicitly referenced
+// RUN: %clang_cc1 -verify -fmodules -fimplicit-module-maps -fmodules-cache-path=%t -F %S/Inputs/implicit-private-canonical -emit-pch -o %t-A.pch %s -Wprivate-module -DNO_AT_IMPORT
+// Use the PCH with no explicit way to resolve APrivate, still pick it up by automatic second-chance search for "A" with "Private" appended
+// RUN: %clang_cc1 -verify -fmodules -fimplicit-module-maps -fmodules-cache-path=%t -F %S/Inputs/implicit-private-canonical -include-pch %t-A.pch %s -fsyntax-only -Wprivate-module -DNO_AT_IMPORT
+
+// RUN: rm -rf %t
+// RUN: %clang_cc1 -verify -fmodules -fimplicit-module-maps -fmodules-cache-path=%t -F %S/Inputs/implicit-private-canonical -emit-pch -o %t-A.pch %s -Wprivate-module -DUSE_AT_IMPORT_PRIV
+// RUN: %clang_cc1 -verify -fmodules -fimplicit-module-maps -fmodules-cache-path=%t -F %S/Inputs/implicit-private-canonical -include-pch %t-A.pch %s -fsyntax-only -Wprivate-module -DUSE_AT_IMPORT_PRIV
+
+// RUN: rm -rf %t
+// RUN: %clang_cc1 -verify -fmodules -fimplicit-module-maps -fmodules-cache-path=%t -F %S/Inputs/implicit-private-canonical -emit-pch -o %t-A.pch %s -Wprivate-module -DUSE_AT_IMPORT_BOTH
+// RUN: %clang_cc1 -verify -fmodules -fimplicit-module-maps -fmodules-cache-path=%t -F %S/Inputs/implicit-private-canonical -include-pch %t-A.pch %s -fsyntax-only -Wprivate-module -DUSE_AT_IMPORT_BOTH
+
+// expected-no-diagnostics
+
+#ifndef HEADER
+#define HEADER
+
+#ifdef NO_AT_IMPORT
+#import "A/aprivate.h"
+#endif
+
+#ifdef USE_AT_IMPORT_PRIV
+@import A_Private;
+#endif
+
+#ifdef USE_AT_IMPORT_BOTH
+@import A;
+@import A_Private;
+#endif
+
+const int *y = &APRIVATE;
+
+#endif