2 files changed, 25 insertions, 1 deletions
diff --git a/Tests/ExportImport/Export/Interface/CMakeLists.txt b/Tests/ExportImport/Export/Interface/CMakeLists.txt
index 1b653eb..523fc29 100644
--- a/Tests/ExportImport/Export/Interface/CMakeLists.txt
+++ b/Tests/ExportImport/Export/Interface/CMakeLists.txt
@@ -26,7 +26,10 @@ target_link_libraries(sharediface INTERFACE sharedlib)
 add_library(use_auto_type INTERFACE)
 target_compile_features(use_auto_type INTERFACE cxx_auto_type)
 
-install(TARGETS headeronly sharediface use_auto_type
+add_library(use_c_restrict INTERFACE)
+target_compile_features(use_c_restrict INTERFACE c_restrict)
+
+install(TARGETS headeronly sharediface use_auto_type use_c_restrict
   EXPORT expInterface
 )
 install(TARGETS sharedlib
diff --git a/Tests/ExportImport/Import/Interface/CMakeLists.txt b/Tests/ExportImport/Import/Interface/CMakeLists.txt
index 18d9b76..4028405 100644
--- a/Tests/ExportImport/Import/Interface/CMakeLists.txt
+++ b/Tests/ExportImport/Import/Interface/CMakeLists.txt
@@ -17,6 +17,7 @@ set_property(TARGET bld::sharediface APPEND PROPERTY INTERFACE_LINK_LIBRARIES de
 add_executable(interfacetest_bld interfacetest.cpp)
 target_link_libraries(interfacetest_bld bld::sharediface)
 
+include(CheckCSourceCompiles)
 include(CheckCXXSourceCompiles)
 
 macro(do_try_compile prefix)
@@ -41,6 +42,26 @@ macro(do_try_compile prefix)
     message(SEND_ERROR "${prefix} try_compile with IMPORTED INTERFACE target failed!\n\n${OUTPUT}")
   endif()
 
+  if (";${CMAKE_C_COMPILE_FEATURES};" MATCHES ";c_restrict;")
+    set(CMAKE_REQUIRED_LIBRARIES ${prefix}::use_c_restrict)
+    check_c_source_compiles(
+      "
+    int foo(int * restrict a, int * restrict b)
+    {
+      (void)a;
+      (void)b;
+      return 0;
+    }
+    int main()
+    {
+      return 0;
+    }
+    " ${prefix}IMPORTED_IFACE_C_RESTRICT)
+
+    if(NOT ${prefix}IMPORTED_IFACE_C_RESTRICT)
+      message(SEND_ERROR "${prefix} try_compile with IMPORTED INTERFACE target failed!\n\n${OUTPUT}")
+    endif()
+  endif()
   if (";${CMAKE_CXX_COMPILE_FEATURES};" MATCHES ";cxx_auto_type;")
     set(CMAKE_REQUIRED_LIBRARIES ${prefix}::use_auto_type)
     check_cxx_source_compiles(