From 35c71f1b471cefab08aca141bf725204ae9cea09 Mon Sep 17 00:00:00 2001
From: Smertig <akaraevz@mail.ru>
Date: Sun, 9 May 2021 13:07:01 +0300
Subject: [PATCH] Add test with misaligned allocation

---
 tests/CMakeLists.txt                          |  2 +
 ...XXXX - incorrect alignment calculation.cpp | 32 +++++++++
 tests/regression_tests/simple/source/main.cpp | 69 ++++++++++---------
 3 files changed, 69 insertions(+), 34 deletions(-)
 create mode 100644 tests/regression_tests/simple/source/XXXX - incorrect alignment calculation.cpp

diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index 59927c90..98a2f27c 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -78,6 +78,8 @@ function(sol2_create_basic_test test_target_name target_sol)
 		PRIVATE ${target_sol})
 	target_compile_definitions(${test_target_name}
 		PRIVATE SOL_ALL_SAFETIES_ON=1)
+	target_compile_definitions(${test_target_name}
+		PRIVATE SOL_TESTS_SIZEOF_VOID_P=${CMAKE_SIZEOF_VOID_P})
 endfunction()
 
 add_subdirectory(inclusion)
diff --git a/tests/regression_tests/simple/source/XXXX - incorrect alignment calculation.cpp b/tests/regression_tests/simple/source/XXXX - incorrect alignment calculation.cpp
new file mode 100644
index 00000000..4f7fe580
--- /dev/null
+++ b/tests/regression_tests/simple/source/XXXX - incorrect alignment calculation.cpp	
@@ -0,0 +1,32 @@
+#include <sol/sol.hpp>
+
+#if SOL_TESTS_SIZEOF_VOID_P == 4
+
+inline namespace sol2_regression_test_XXXX {
+	struct Test {
+		std::uint64_t dummy;
+	};
+} // namespace sol2_regression_test_XXXX
+
+unsigned int regression_XXXX() {
+	sol::state lua;
+
+	static_assert(sizeof(Test) == 8);
+	static_assert(alignof(Test) == 8);
+	static_assert(sizeof(Test*) == 4);
+	static_assert(alignof(Test*) == 4);
+
+	/// [sol2] An error occurred and panic has been invoked: aligned allocation of userdata block (data section) for 'sol2_regression_test_XXXX::Test' failed
+	/// Note: may not panic depending on alignment of local variable `alignment_shim` in sol::detail::aligned_space_for
+	lua["test"] = Test {};
+
+	return 0;
+}
+
+#else
+
+unsigned int regression_XXXX() {
+	return 0;
+}
+
+#endif
diff --git a/tests/regression_tests/simple/source/main.cpp b/tests/regression_tests/simple/source/main.cpp
index 234b46e3..aa59eba3 100644
--- a/tests/regression_tests/simple/source/main.cpp
+++ b/tests/regression_tests/simple/source/main.cpp
@@ -1,34 +1,35 @@
-#include <cstddef>
-
-using f_ptr = unsigned int();
-
-extern unsigned int regression_1000();
-extern unsigned int regression_1008();
-extern unsigned int regression_1067();
-extern unsigned int regression_1072();
-extern unsigned int regression_1087();
-extern unsigned int regression_1095();
-extern unsigned int regression_1096();
-extern unsigned int regression_1149();
-
-static f_ptr* const regression_tests_regressions[]
-     = { &regression_1008, &regression_1000, &regression_1067, &regression_1072, &regression_1087, &regression_1095, &regression_1096, &regression_1149 };
-static const int regression_tests_sizeof_regressions = sizeof(regression_tests_regressions) / sizeof(regression_tests_regressions[0]);
-
-int trampoline(f_ptr* f) {
-	try {
-		return f();
-	}
-	catch (...) {
-	}
-	return 1;
-}
-
-int main(int, char*[]) {
-	int r = 0;
-	for (std::size_t i = 0; i < regression_tests_sizeof_regressions; ++i) {
-		f_ptr* f = regression_tests_regressions[i];
-		r += static_cast<int>(trampoline(f) != 0u);
-	}
-	return r;
-}
+#include <cstddef>
+
+using f_ptr = unsigned int();
+
+extern unsigned int regression_1000();
+extern unsigned int regression_1008();
+extern unsigned int regression_1067();
+extern unsigned int regression_1072();
+extern unsigned int regression_1087();
+extern unsigned int regression_1095();
+extern unsigned int regression_1096();
+extern unsigned int regression_1149();
+extern unsigned int regression_XXXX();
+
+static f_ptr* const regression_tests_regressions[]
+     = { &regression_1008, &regression_1000, &regression_1067, &regression_1072, &regression_1087, &regression_1095, &regression_1096, &regression_1149, &regression_XXXX };
+static const int regression_tests_sizeof_regressions = sizeof(regression_tests_regressions) / sizeof(regression_tests_regressions[0]);
+
+int trampoline(f_ptr* f) {
+	try {
+		return f();
+	}
+	catch (...) {
+	}
+	return 1;
+}
+
+int main(int, char*[]) {
+	int r = 0;
+	for (std::size_t i = 0; i < regression_tests_sizeof_regressions; ++i) {
+		f_ptr* f = regression_tests_regressions[i];
+		r += static_cast<int>(trampoline(f) != 0u);
+	}
+	return r;
+}