[GCC-COMPAT] Add support library for GCC's libsupc++ and libstdc++

__throw_out_of_range_fmt is implemented in libstdc++, but it is needed by libsupc++ and that would mean we would have to link all C++ code to libstdc++.

sdk/lib/gcc-compat/__throw_out_of_range_fmt.cpp

@@ -0,0 +1,42 @@
+/*
+ * PROJECT:     GCC c++ support library
+ * LICENSE:     MIT (https://spdx.org/licenses/MIT)
+ * PURPOSE:     __throw_out_of_range_fmt implementation
+ * COPYRIGHT:   Copyright 2024 Timo Kreuzer <timo.kreuzer@reactos.org>
+ */
+
+#include <stdexcept>
+#include <cstdarg>
+#include <cstring>
+#include <malloc.h>
+
+namespace std {
+
+class out_of_range_error : public exception
+{
+    char* m_msg;
+public:
+    explicit out_of_range_error(const char* msg) noexcept
+    {
+        size_t len = strlen(msg) + 1;
+        m_msg = (char*)malloc(len);
+        strcpy(m_msg, msg);
+    }
+    virtual ~out_of_range_error() { free(m_msg); };
+    virtual const char* what() const noexcept { return m_msg; }
+};
+
+void __throw_out_of_range_fmt(const char *format, ...)
+{
+    char buffer[1024];
+    va_list argptr;
+
+    va_start(argptr, format);
+    _vsnprintf(buffer, sizeof(buffer), format, argptr);
+    buffer[sizeof(buffer) - 1] = 0;
+    va_end(argptr);
+
+    throw out_of_range_error(buffer);
+}
+
+}  // namespace std