# Fixes a compilation error in althreads.h when targeting Emscripten without pthread support.

--- a/common/althreads.h
+++ b/common/althreads.h
@@ -107,29 +107,57 @@ public:
 
 #else
 
+#if defined(__EMSCRIPTEN__) && !defined(__EMSCRIPTEN_PTHREADS__)
+    void **mTss;
+#else
     tss_t mTss{};
+#endif /* defined(__EMSCRIPTEN__) && !defined(__EMSCRIPTEN_PTHREADS__) */
 
 public:
     tss()
     {
+#if defined(__EMSCRIPTEN__) && !defined(__EMSCRIPTEN_PTHREADS__)
+        if ((mTss = (void **)std::malloc(sizeof *mTss)) == NULL)
+            throw std::runtime_error{"al::tss::tss()"};
+        *mTss = nullptr;
+#else
         if(int res{tss_create(&mTss, nullptr)}; res != thrd_success)
             throw std::runtime_error{"al::tss::tss()"};
+#endif /* defined(__EMSCRIPTEN__) && !defined(__EMSCRIPTEN_PTHREADS__) */
     }
     explicit tss(const T &init) : tss{}
     {
+#if defined(__EMSCRIPTEN__) && !defined(__EMSCRIPTEN_PTHREADS__)
+        if ((mTss = (void **)std::malloc(sizeof *mTss)) == NULL)
+            throw std::runtime_error{"al::tss::tss()"};
+        *mTss = to_ptr(init);
+#else
         if(int res{tss_set(mTss, to_ptr(init))}; res != thrd_success)
             throw std::runtime_error{"al::tss::tss(T)"};
+#endif /* defined(__EMSCRIPTEN__) && !defined(__EMSCRIPTEN_PTHREADS__) */
     }
+#if defined(__EMSCRIPTEN__) && !defined(__EMSCRIPTEN_PTHREADS__)
+    ~tss() { std::free(mTss); }
+#else
     ~tss() { tss_delete(mTss); }
+#endif /* defined(__EMSCRIPTEN__) && !defined(__EMSCRIPTEN_PTHREADS__) */
 
     void set(const T &value) const
     {
+#if defined(__EMSCRIPTEN__) && !defined(__EMSCRIPTEN_PTHREADS__)
+        *mTss = to_ptr(value);
+#else
         if(int res{tss_set(mTss, to_ptr(value))}; res != thrd_success)
             throw std::runtime_error{"al::tss::set(T)"};
+#endif /* defined(__EMSCRIPTEN__) && !defined(__EMSCRIPTEN_PTHREADS__) */
     }
 
     [[nodiscard]]
+#if defined(__EMSCRIPTEN__) && !defined(__EMSCRIPTEN_PTHREADS__)
+    auto get() const noexcept -> T { return from_ptr(*mTss); }
+#else
     auto get() const noexcept -> T { return from_ptr(tss_get(mTss)); }
+#endif /* defined(__EMSCRIPTEN__) && !defined(__EMSCRIPTEN_PTHREADS__) */
 #endif /* _WIN32 */
 
     tss(const tss&) = delete;