Add tests cases for mimalloc static initialization order

CMakeLists.txt

@@ -384,6 +384,35 @@ if (MI_BUILD_TESTS)
 
     add_test(NAME test-${TEST_NAME} COMMAND mimalloc-test-${TEST_NAME})
   endforeach()
+
+  # Test for static initialization order of user vs mimalloc code, in various combinations
+  # of static and shared linkage.
+  # The "test" is that the executables don't crash.
+  set(STATIC_USER_SRC test/static-user.cpp test/static-user.h)
+  foreach(mimalloc_link mimalloc mimalloc-static)
+    set(libname_static static-user-static_${mimalloc_link})
+    add_library(${libname_static} STATIC)
+    target_sources(${libname_static} PRIVATE ${STATIC_USER_SRC})
+    target_compile_definitions(${libname_static} PRIVATE STATIC_USER_BUILD)
+    target_link_libraries(${libname_static} PUBLIC ${mimalloc_link})
+
+    set(libname_shared static-user-shared_${mimalloc_link})
+    add_library(${libname_shared} SHARED)
+    target_sources(${libname_shared} PRIVATE ${STATIC_USER_SRC})
+    target_compile_definitions(${libname_shared} PRIVATE STATIC_USER_BUILD)
+    target_compile_definitions(${libname_shared} PUBLIC STATIC_USER_SHARED)
+    target_link_libraries(${libname_shared} PUBLIC ${mimalloc_link})
+
+    foreach(static_user_type static shared)
+      set(static_user_lib_name static-user-${static_user_type}_${mimalloc_link})
+      set(test_name test-${static_user_lib_name})
+      add_executable(${test_name})
+      target_sources(${test_name} PRIVATE test/test-static-user.c)
+      target_link_libraries(${test_name} PUBLIC ${static_user_lib_name})
+
+      add_test(NAME ${test_name} COMMAND ${test_name})
+    endforeach()
+  endforeach()
 endif()
 
 # -----------------------------------------------------------------------------

test/static-user.cpp

@@ -0,0 +1,38 @@
+/* ----------------------------------------------------------------------------
+Copyright (c) 2021 Frank Richter
+This is free software; you can redistribute it and/or modify it under the
+terms of the MIT license. A copy of the license can be found in the file
+"LICENSE" at the root of this distribution.
+-----------------------------------------------------------------------------*/
+
+#include "static-user.h"
+
+#include "mimalloc.h"
+
+struct HeapWrapper
+{
+    struct Container
+    {
+        mi_heap_t *heap;
+    };
+    Container *container;
+
+    HeapWrapper()
+    {
+        container = mi_malloc_tp(Container);
+        container->heap = mi_heap_new();
+    }
+    ~HeapWrapper()
+    {
+        mi_heap_destroy(container->heap);
+        mi_free(container);
+    }
+};
+
+static HeapWrapper static_heap;
+
+void static_user_ref()
+{
+    auto *p = mi_heap_malloc(static_heap.container->heap, 123);
+    mi_free(p);
+}

test/static-user.h

@@ -0,0 +1,42 @@
+/* ----------------------------------------------------------------------------
+Copyright (c) 2021 Frank Richter
+This is free software; you can redistribute it and/or modify it under the
+terms of the MIT license. A copy of the license can be found in the file
+"LICENSE" at the root of this distribution.
+-----------------------------------------------------------------------------*/
+
+#ifndef STATIC_USER_H_
+#define STATIC_USER_H_
+
+#if defined(_MSC_VER) || defined(__MINGW32__)
+#define DLLEXPORT   __declspec(dllexport)
+#define DLLIMPORT   __declspec(dllimport)
+#elif defined(__GNUC__)
+#define DLLEXPORT   __attribute__((visibility("default")))
+#define DLLIMPORT
+#else
+#define DLLEXPORT
+#define DLLIMPORT
+#endif
+
+#if defined(STATIC_USER_SHARED)
+#if defined(STATIC_USER_BUILD)
+#define STATIC_USER_API DLLEXPORT
+#else
+#define STATIC_USER_API DLLIMPORT
+#endif
+#else
+#define STATIC_USER_API
+#endif
+
+#if defined(__cplusplus)
+extern "C" {
+#endif // defined(__cplusplus)
+
+STATIC_USER_API void static_user_ref();
+
+#if defined(__cplusplus)
+} // extern "C"
+#endif // defined(__cplusplus)
+
+#endif // STATIC_USER_H_

test/test-static-user.c

@@ -0,0 +1,25 @@
+/* ----------------------------------------------------------------------------
+Copyright (c) 2018-2020, Microsoft Research, Daan Leijen
+This is free software; you can redistribute it and/or modify it under the
+terms of the MIT license. A copy of the license can be found in the file
+"LICENSE" at the root of this distribution.
+-----------------------------------------------------------------------------*/
+#include "mimalloc.h"
+
+#include "static-user.h"
+#include "testhelper.h"
+
+// ---------------------------------------------------------------------------
+// Main testing
+// ---------------------------------------------------------------------------
+int main(void) {
+  mi_option_disable(mi_option_verbose);
+
+  // The real test is whether the test executable crashes at exit
+  static_user_ref();
+
+  // ---------------------------------------------------
+  // Done
+  // ---------------------------------------------------[]
+  return print_test_summary();
+}