all: assorted cleanups

src/util/util.cpp

@@ -176,7 +176,7 @@ void uintptr_check_no_overlap(upx_uintptr_t a, size_t a_size, upx_uintptr_t b, s
         throwCantPack("ptr_check_no_overlap-bc");
 }
 
-#if !defined(DOCTEST_CONFIG_DISABLE) && DEBUG
+#if !defined(DOCTEST_CONFIG_DISABLE) && !defined(__wasi__) && DEBUG
 TEST_CASE("ptr_check_no_overlap 2") {
     byte p[4] = {};
 
@@ -922,4 +922,15 @@ TEST_CASE("get_ratio") {
     CHECK(get_ratio(2 * UPX_RSIZE_MAX, 1024ull * UPX_RSIZE_MAX) == 9999999);
 }
 
+/*************************************************************************
+// compat
+**************************************************************************/
+
+#if defined(__wasi__) // TODO later - wait for wasm/wasi exception handling proposal
+extern "C" {
+void __cxa_allocate_exception() { std::terminate(); }
+void __cxa_throw() { std::terminate(); }
+} // extern "C"
+#endif
+
 /* vim:set ts=4 sw=4 et: */